Relevant bibliographies by topics / Bimetallic alloys

Academic literature on the topic 'Bimetallic alloys'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Contents

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Bimetallic alloys.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Bimetallic alloys"

1

Yu, Lei, Sida Jiang, Fuyang Cao, Hongxian Shen, Lunyong Zhang, Xu Gu, Heqian Song, and Jianfei Sun. "Thermal Expansion Behavior of Co-Spray Formed Al-20Si/7075 Bimetallic Gradient Alloy." Materials 14, no. 15 (July 23, 2021): 4100. http://dx.doi.org/10.3390/ma14154100.

Full text
Abstract:
Bimetallic gradient alloys have attracted research attention recently due to their potential applications in the aerospace and automobile industries. In this study, Al-20Si/7075 bimetallic gradient alloys were successfully manufactured by co-spray forming and the roll process. We investigated the thermal expansion behavior of the gradient alloy. It was found that the coefficients of thermal expansion increased with silicon content and increased temperature, reaching the highest point at 573 K, after which they decreased on account of the relaxation of residual thermal stress and the silicon desolvation from the supersaturated aluminum phase. The measured thermal expansion coefficient can be roughly predicted through the traditional theoretical models. Our results revealed the thermal expansion behavior of Al-20Si/7075 bimetallic gradient alloys and would improve the development of new type aluminum–silicon alloy for electronic packaging.
APA, Harvard, Vancouver, ISO, and other styles
2

Farghaly, Ahmed A., Rezaul K. Khan, and Maryanne M. Collinson. "Biofouling-Resistant Platinum Bimetallic Alloys." ACS Applied Materials & Interfaces 10, no. 25 (June 15, 2018): 21103–12. http://dx.doi.org/10.1021/acsami.8b02900.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Huang, Guang Sheng, Wei Xu, Guang Jie Huang, and Fu Sheng Pan. "A Study of Hot Extrusion of 6063 Aluminum Alloy-Clad AZ31B Magnesium Alloy Bar." Materials Science Forum 610-613 (January 2009): 791–95. http://dx.doi.org/10.4028/www.scientific.net/msf.610-613.791.

Full text
Abstract:
The magnesium alloys have poor corrosion resistance because of their low equilibrium potential and loose oxide film, while the aluminum and its alloys have good corrosion resistance due to their compact oxide film. In this study, a kind of aluminum and magnesium bimetallic bars, 6063 aluminum alloy-clad AZ31B magnesium alloy bars, were acquired through hot extrusion. The experimental results showed that the extrusion temperature of 653K or lower, as well as an extrusion speed of 2m/min or lower be used during the extrusion. The interfacial structure and mechanical properties of the bimetallic bars were studied. The interface between aluminum alloy and magnesium alloy was metallurgic bonding with the shear bonding strength of 53Mpa for as extruded sample. As annealing temperature or holding time increased, the jointed layer between aluminum alloy and magnesium alloy was broadened, which decreased of shear bonding strength, indicating that the heat treatment is deleterious. The bimetallic bars have lower identity, good corrosion resistance and preferable mechanical properties, which are promising constructional materials.
APA, Harvard, Vancouver, ISO, and other styles
4

Moest, B., P. T. Wouda, A. W. Denier van der Gon, M. C. Langelaar, H. H. Brongersma, B. E. Nieuwenhuys, and D. O. Boerma. "Step-edge segregation of bimetallic alloys." Surface Science 473, no. 3 (February 2001): 159–71. http://dx.doi.org/10.1016/s0039-6028(00)00964-x.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Halaczek, Dariusz, and Eugniusz Hadasik. "The Influence of the Components of the Bimetallic Tubes for the Way of Deforming in the Hollow Drawing Process." Solid State Phenomena 246 (February 2016): 225–30. http://dx.doi.org/10.4028/www.scientific.net/ssp.246.225.

Full text
Abstract:
Processes for producing bimetallic tubes can be divided for: producing the bimetallic tubes in the cold process, with preheating or with the heat treatment after each pull. First method relates to the metal with high ductility (copper, copper alloys, aluminum, aluminum alloys, zinc, etc.), second to the metals or bi-metal components, in one of which has significantly different plastic properties from the second for example: low-carbon steel, high alloy steel, etc. One of the methods for the production of bimetallic tubes is hollow cold drawing process. In this process the wall thickness is changed, which means the wall becomes thicker, the wall becomes thinner or remains unchanged. The aim of the research was to determine the effect of the influence of the share of components of bimetallic cooper tube species M1E, and the copper tube - species M63 in the arrangement M1E - M63 and M63 - M1E in the tubes hollow drawing process for the distribution and size of deformation of the individual layers. The research program included:- production of the bimetallic tubes by hollow drawing with a different percentage of the cross-section components and with a variable arrangement of layers,- determination of the size and distribution of true strain of the individual layers on the cross-section of bimetallic tube,- determination of replacement/equivalent strain for the deformable wall of the bimetallic tube,- evaluation of the usability of the graph of changes in thickness of the tube wall in the hollow drawing process for the drawing process of the bimetallic tubes.
APA, Harvard, Vancouver, ISO, and other styles
6

Polozov, Igor, Anna Gracheva, and Anatoly Popovich. "Interface Characterization of Bimetallic Ti-6Al-4V/Ti2AlNb Structures Prepared by Selective Laser Melting." Materials 15, no. 23 (November 30, 2022): 8528. http://dx.doi.org/10.3390/ma15238528.

Full text
Abstract:
Additive Manufacturing (AM) of multimaterial components is a promising way of fabricating parts with improved functional properties. It allows for the combination of materials with different properties into a single component. The Ti2AlNb-based intermetallic alloy provides high temperature strength, while the Ti-6Al-4V (Ti64) alloy has good fracture toughness, ductility, and a relatively low cost. A combination of these alloys into a single component can be used to produce advanced multimaterial parts. In this work, Ti2AlNb/Ti-6Al-4V bimetallic structures were fabricated from pre-alloyed powders using the Selective Laser Melting (SLM) process. The effects of high-temperature substrate preheating, post-processing by annealing, and hot isostatic pressing on defect formation, the microstructural evolution of the interface area, and the mechanical properties of the bimetallic samples were investigated. High-temperature substrate preheating during the SLM process was necessary to prevent reheat cracking of the Ti2AlNb part, while annealing and hot isostatic pressing post-processing improved the chemical and microstructural homogeneity of the transition zone and enhanced the tensile properties of the bimetallic structure.
APA, Harvard, Vancouver, ISO, and other styles
7

Kopešťanský, Josef. "Adsorption of oxygen and carbon monoxide on DymCun bimetallic surfaces at room temperature." Collection of Czechoslovak Chemical Communications 52, no. 10 (1987): 2392–400. http://dx.doi.org/10.1135/cccc19872392.

Full text
Abstract:
The adsorption of oxygen and carbon monoxide on surfaces of dysprosium, copper, and their bimetallic “alloys” DymCun was studied by work function measurements. In the starting stage of adsorption of oxygen, copper surfaces are more reactive than dysprosium surfaces, and bulk oxide appears in the sub-surface copper layers at room temperature; this was also observed for the bimetallic surfaces, where the starting adsorption of oxygen took place nearly exclusively on copper. With dysprosium, the bulk oxide did not form at room temperature; instead, oxygen was adsorbed on the surface to form a layer consisting of species of two kinds with substantially different dipole moments. Carbon monoxide practically did not adsorb on copper at 25 °C, whereas on dysprosium it exhibited dissociative adsorption. On the bimetallic surfaces (DyCu and DyCu6) the amount of adsorbed CO decreased proportionally to the increasing Cu content of the alloy. Segregation of copper in the surface layer, observed for the bimetallic DymCun “alloys”, resulted in an additional decrease in the amount of adsorbed CO.
APA, Harvard, Vancouver, ISO, and other styles
8

Fathy, Naglaa. "Interfacial Microstructure and Shear Strength Improvements of Babbitt–Steel Bimetal Composites Using Sn–Bi Interlayer via Liquid–Solid Casting." Sustainability 15, no. 1 (January 2, 2023): 804. http://dx.doi.org/10.3390/su15010804.

Full text
Abstract:
To enhance the performance of Babbitt–steel bimetallic composites, bismuth (Bi) was incorporated into the Tin (Sn)-interlayer. Babbitt–steel bimetallic composites were created using the liquid–solid compound casting method in this study. Sn–Bi interlayer alloys with varying levels of Bi (1, 2, 3, and 4 wt.%) were created. The Babbitt-steel bimetallic composite’s bonding strength and interfacial microstructure were examined in relation to Sn-Bi interlayer alloys. The structure of the interface layer at the Babbitt–steel interface’s edge and center are significantly altered when Bi is added to the Sn interlayer. The relatively higher cooling rate near the edge led to the formation of clear unsolved Sn/Sn–Bi interlayers. Otherwise, the Sn–Bi interlayers in the middle were completely dissolved. By increasing the amount of Bi in the Sn–Bi interlayer alloy, the interfacial hardness of Babbitt-steel bimetallic composites increases by increasing Bi content in Sn–Bi interlayer alloy. Babbitt-steel bimetal composites’ shear strength increased to 28.27 MPa by adding Bi to the Sn interlayer using 1 wt.% alloying, with a 10.3% increase when compared with the reference pure Sn interlayer. Future research that aims to improve the production of Babbitt-steel bimetallic composites with high-quality and long-lasting bi-metal bonding ought to take into consideration the ideal pouring temperature, the preheating of the mold, and the addition of a minor amount of Bi (Bi ≤ 1) to the Sn-interlayer.
APA, Harvard, Vancouver, ISO, and other styles
9

Mukherjee, S., and J. L. Morán-López. "Surface segregation in transition-metal alloys and in bimetallic alloy clusters." Surface Science 189-190 (October 1987): 1135–42. http://dx.doi.org/10.1016/s0039-6028(87)80561-7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Mukherjee, S., and J. L. Morán-López. "Surface segregation in transition-metal alloys and in bimetallic alloy clusters." Surface Science Letters 189-190 (October 1987): A460. http://dx.doi.org/10.1016/0167-2584(87)90571-8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Bimetallic alloys"

1

Aas, C. J. "Ab initio calculations of the magnetic properties of bimetallic alloys." Thesis, University of York, 2013. http://etheses.whiterose.ac.uk/4302/.

Full text
Abstract:
Magnetic recording technology is ubiquitous in the modern world and constitutes a corner stone of current research and development. Recent inventions such as heat-assisted magnetic recording and exchange-coupled media has focused magnetic recording research towards alloys exhibiting strong magnetocrystalline anisotropies. In this thesis, we investigate, from first principles using the screened Korringa-Kohn-Rostoker method, the effect of a range of compositional and microstructural defects and features upon the magnetocrystalline anisotropy energy (MAE) of FePt and CoPt alloys. We show that localised Pt alloying affects the MAE of bulk Co primarily through the Pt-induced effects on the Co sites. We demonstrate that stacking faults often reduce the Co MAE and that the effect of composite stacking faults upon the MAE is not necessarily additive, but synergistic. By varying the unit cell geometry and the compositional parameters of FePt, we show that the formation of complete Fe layers is, generally, the dominant factor in maintaining a large MAE. We investigate the magnetic properties (spin moments, magnetocrystalline anisotropy and magnetic exchange) across an Fe/FePt/Fe multi-layer and show that the effective exchange exhibits a strong reduction at the Fe/FePt interfaces and that the MAE of the whole multilayer system is very slightly reduced by the presence of the Fe/FePt interfaces. Across all systems, we observe that localised features such as stacking faults, interfaces and localised alloying incur relatively long-ranged spatial oscillations in the MAE, which may, in turn, cause significant finite-size effects on the nano-scale.
APA, Harvard, Vancouver, ISO, and other styles
2

Haire, Andrew Richard. "Probing the influence of bimetallic composition on the Pd/Au catalysed synthesis of vinyl acetate monomer." Thesis, University of St Andrews, 2010. http://hdl.handle.net/10023/1018.

Full text
Abstract:
Scanning Tunnelling Microscopy (STM) was utilised together with the high resolution depth-profiling capabilities of Medium Energy Ion Scattering (MEIS), a technique traditionally associated with single crystal substrates, to probe the mean size and depth dependent composition profile of bimetallic PdAu nanoparticles on planar oxide surfaces as functions of the starting composition and annealing temperature. In order to fit composition profiles to experimental MEIS data, a new analysis tool has been designed that models the particles as flat-topped structures with a hexagonal base which can be divided into a number of shells, each shell corresponding to a particular ion pathlength inside the material. The reliability of this method will be discussed in detail. Fitting results show that the surface layers are always significantly enriched in Au compared to the bulk alloy composition. By comparing MEIS data for clean surfaces data for modified surfaces it was found that Pd generally segregates towards the particle surface on adsorption of acetic acid. The interaction of potassium acetate with Au/Pd{111} alloy surfaces of varying composition has been investigated using Temperature Programmed Desorption (TPD) and Reflection Absorption Infra Red Spectroscopy (RAIRS). At lower coverage, potassium acetate reacts reversibly with the surface to form CO and carbonate. Formation of surface acetate is observed on Pd-rich surfaces only. At higher coverage, acetate is the major surface species formed on all samples examined.
APA, Harvard, Vancouver, ISO, and other styles
3

Merritt, Travis Robert. "Optoperforation of Intact Plant Cells, Spectral Characterization of Alloy Disorder in InAsP Alloy Disorder in InAsP Alloys, and Bimetallic Concentric Surfaces for Metal-Enhanced Fluorescence in Upconverting Nanocrystals." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/25148.

Full text
Abstract:
The techniques of optoperforation, spectral characterization of alloy disorder, and metal-enhanced fluorescence were applied to previously unconsidered or disregarded systems in order to demonstrate that such applications are both feasible and consequential. These applications were the subject of three disparate works and, as such, are independently discussed. Despite being ostensibly restricted to mammalian cells, optoperforation was demonstrated in intact plant cells by means of successful femtosecond-laser-mediated infiltration of a membrane impermeable dextran-conjugated dye into cells of vital Arabidopsis seedling stems. By monitoring the rate of dye uptake, and the reaction of both CFP-expressing vacuoles and nanocellulose substrates, the intensity and exposure time of the perforating laser were adjusted to values that both preserved cell vitality and permitted the laser-assisted uptake of the fluorophore. By using these calibrated laser parameters, dye was injected and later observed in targeted cells after 72 hours, all without deleteriously affecting the vital functions of those cells. In the context of alloy disorder, photoluminescence of excitonic transitions in two InAsxP1-x alloys were studied through temperature and magnetic field strength dependencies, as well as compositionally-dependent time-resolved behavior. The spectral shape, behavior of the linewidths at high magnetic fields, and the divergence of the peak positions from band gap behavior at low temperatures indicated that alloy disorder exists in the x=0.40 composition while showing no considerable presence in the x=0.13 composition. The time-resolved photoluminescence spectrum for both compositions feature a fast and slow decay, with the slow decay lifetime in x=0.40 being longer than that of x=0.13, which may be due to carrier migration between localized exciton states in x=0.40. In order to achieve broadband metal-enhanced fluorescence in upconverting NaYF4:Yb,Er nanocrystals, two nanocomposite architectures were proposed that retrofit metallic nanoshells to these lanthanide-doped nanocrystals. The typical monometallic construction was rejected in favor of architectures featuring Au-Ag bimetallic concentric surfaces, a decision supported by the considerable overlap of the calculated plasmon modes of the metallic structures with the emission and absorption spectrum of the nanocrystals. Furthermore, precursors of these nanocomposites were synthesized and photoluminescence measurements were carried out, ultimately verifying that these precursors produce the requisite upconversion emissions.
Ph. D.
APA, Harvard, Vancouver, ISO, and other styles
4

Ikpo, Chinwe Oluchi. "Development of high performance composite lithium ion battery cathode systems with carbon nanotubes functionalised with bimetallic inorganic nanocrystal alloys." Thesis, University of Western Cape, 2011. http://hdl.handle.net/11394/3797.

Full text
Abstract:
Philosophiae Doctor - PhD
Lithium ion cathode systems based on composites of lithium iron phosphate (LiFePO₄), iron-cobalt-derivatised carbon nanotubes (FeCo-CNT) and polyaniline (PA) nanomaterials were developed. The FeCo-functionalised CNTs were obtained through in-situ reductive precipitation of iron (II) sulfate heptahydrate (FeSO₄.7H₂O) and cobalt (II) chloride hexahydrate (CoCl₂.6H₂O) within a CNT suspension via sodium borohydrate (NaBH₄) reduction protocol. Results from high Resolution Transmission Electron Microscopy (HRTEM) and Scanning Electron Microscopy (SEM) showed the successful attachment FeCo nanoclusters at the ends and walls of the CNTs. The nanoclusters provided viable routes for the facile transfer of electrons during lithium ion deinsertion/insertion in the 3-D nanonetwork formed between the CNTs and adjacent LiFePO₄ particles.
APA, Harvard, Vancouver, ISO, and other styles
5

Alcantara, Ortigoza Marisol. "Theoretical studies of electronic, vibrational, and magnetic properties of chemisorbed surfaces and nanoalloys." Diss., Manhattan, Kan. : Kansas State University, 2007. http://hdl.handle.net/2097/496.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Owens, Thomas Graham. "The promoting role of Au in the Pd-catalysed synthesis of vinyl acetate monomer." Thesis, University of St Andrews, 2007. http://hdl.handle.net/10023/352.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

MacLeod, Norman. "Alloy formation in bimetallic reforming catalysts." Thesis, University of Glasgow, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388553.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Ross, Nick Mark. "Interfacial Electrochemistry of Cu/Al Alloys for IC Packaging and Chemical Bonding Characterization of Boron Doped Hydrogenated Amorphous Silicon Films for Infrared Cameras." Thesis, University of North Texas, 2005. https://digital.library.unt.edu/ark:/67531/metadc849696/.

Full text
Abstract:
We focused on a non-cooling room temperature microbolometer infrared imaging array device which includes a sensing layer of p-type a-Si:H component layers doped with boron. Boron incorporation and bonding configuration were investigated for a-Si:H films grown by plasma enhanced chemical deposition (PECVD) at varying substrate temperatures, hydrogen dilution of the silane precursor, and dopant to silane ratio using multiple internal reflection infrared spectroscopy (MIR-IR). This study was then confirmed from collaborators via Raman spectroscopy. MIR-IR analyses reveal an interesting counter-balance relationship between boron-doping and hydrogen-dilution growth parameters in PECVD-grown a-Si:H. Specifically, an increase in the hydrogen dilution ratio (H2/SiH4) or substrate temperature was found to increase organization of the silicon lattice in the amorphous films. It resulted in the decrease of the most stable SiH bonding configuration and thus decrease the organization of the film. The new chemical bonding information of a-Si:H thin film was correlated with the various boron doping mechanisms proposed by theoretical calculations. The study revealed the corrosion morphology progression on aluminum alloy (Al, 0.5% Cu) under acidic chloride solution. This is due to defects and a higher copper content at the grain boundary. Direct galvanic current measurement, linear sweep voltammetry (LSV), and Tafel plots are used to measure corrosion current and potential. Hydrogen gas evolution was also observed (for the first time) in Cu/Al bimetallic interface in areas of active corrosion. Mechanistic insight that leads to effective prevention of aluminum bond pad corrosion is explored and discussed. (Chapter 4) Aluminum bond pad corrosion activity and mechanistic insight at a Cu/Al bimetallic interface typically used in microelectronic packages for automotive applications were investigated by means of optical and scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX) and electrochemistry. Screening of corrosion variables (temperature, moisture, chloride ion concentration, pH) have been investigated to find their effect on corrosion rate and to better understand the Al/Cu bimetallic corrosion mechanism. The study revealed the corrosion morphology progression on aluminum alloy (Al, 0.5% Cu) under acidic chloride solution. The corrosion starts as surface roughening which evolves into a dendrite structure and later continues to grow into a mud-crack type corrosion. SEM showed the early stage of corrosion with dendritic formation usually occurs at the grain boundary. This is due to defects and a higher copper content at the grain boundary. The impact of copper bimetallic contact on aluminum corrosion was explored by sputtering copper microdots on aluminum substrate. Copper micropattern screening revealed that the corrosion is activated on the Al/Cu interface area and driven by the large potential difference; it was also seen to proceed at much higher rates than those observed with bare aluminum. Direct galvanic current measurement, linear sweep voltammetry (LSV), and Tafel plots are used to measure corrosion current and potential. Hydrogen gas evolution was also observed (for the first time) in Cu/Al bimetallic interface in areas of active corrosion. Mechanistic insight that leads to effective prevention of aluminum bond pad corrosion is explored and discussed. Micropattern corrosion screening identified hydrogen evolution and bimetallic interface as the root cause of Al pad corrosion that leads to Cu ball lift-off, a fatal defect, in Cu wire bonded device. Complete corrosion inhibition can be achieved by strategically disabling the mutually coupled cathodic and anodic reaction cycles.
APA, Harvard, Vancouver, ISO, and other styles
9

Wise, Anna MacDonald. "Characterisation of bimetallic alloy and core-shell electrocatalysts." Thesis, University of Southampton, 2012. https://eprints.soton.ac.uk/341819/.

Full text
Abstract:
Core-shell electrocatalysts are of interest for the oxygen reduction reaction in proton exchange membrane fuel cells as enhancements in activity have been reported compared to the traditionally-used Pt/C electrocatalysts. To fully understand the origin of the activity of these samples, and how the structure changes in the electrochemical environment, full in situ structural characterisation is required. The aim of this work was to develop and apply in situ synchrotron based X-ray characterisation techniques (EXAFS, WAXS, SAXS and ASAXS) to study a set of well-defined Pd-core, Pt-shell electrocatalysts with 0.5, 1, 2 and 4 monolayers (ML) of Pt, with the primary motivation of determining the advantages and limitations of each technique when applied to materials of this nature. Measurements were conducted in and ex situ to study the effect of Pt-shell thickness on the structure of the nanoparticles and the response to applied electrode potential. Catalyst electrodes subjected to accelerated ageing tests were also characterised to investigate the mechanisms of degradation responsible for an observed loss in electrochemical surface area, with the dominant mechanism found being dissolution for the core-shell catalysts with ≤ 2 ML shell and coalescence (Ostwald ripening) for the 4 ML. EXAFS was found to be the most useful of the four techniques owing to the detailed structural information obtainable and the relative ease of data collection. The SAXS data provided information not obtained from the EXAFS, and combined with electrochemical measurements, enabled determination of the mechanisms of degradation. WAXS provided complementary information to the EXAFS. Attempts to fit the ASAXS data with a simplistic model were unsuccessful, thus, without the application of more complex theoretical models, little additional information could be obtained from this technique.
APA, Harvard, Vancouver, ISO, and other styles
10

Ross, Nick. "Interfacial Electrochemistry of Cu/Al Alloys for IC Packaging and Chemical Bonding Characterization of Boron Doped Hydrogenated Amorphous Silicon Films for Infrared Cameras." Thesis, University of North Texas, 2016. https://digital.library.unt.edu/ark:/67531/metadc849696/.

Full text
Abstract:
We focused on a non-cooling room temperature microbolometer infrared imaging array device which includes a sensing layer of p-type a-Si:H component layers doped with boron. Boron incorporation and bonding configuration were investigated for a-Si:H films grown by plasma enhanced chemical deposition (PECVD) at varying substrate temperatures, hydrogen dilution of the silane precursor, and dopant to silane ratio using multiple internal reflection infrared spectroscopy (MIR-IR). This study was then confirmed from collaborators via Raman spectroscopy. MIR-IR analyses reveal an interesting counter-balance relationship between boron-doping and hydrogen-dilution growth parameters in PECVD-grown a-Si:H. Specifically, an increase in the hydrogen dilution ratio (H2/SiH4) or substrate temperature was found to increase organization of the silicon lattice in the amorphous films. It resulted in the decrease of the most stable SiH bonding configuration and thus decrease the organization of the film. The new chemical bonding information of a-Si:H thin film was correlated with the various boron doping mechanisms proposed by theoretical calculations. The study revealed the corrosion morphology progression on aluminum alloy (Al, 0.5% Cu) under acidic chloride solution. This is due to defects and a higher copper content at the grain boundary. Direct galvanic current measurement, linear sweep voltammetry (LSV), and Tafel plots are used to measure corrosion current and potential. Hydrogen gas evolution was also observed (for the first time) in Cu/Al bimetallic interface in areas of active corrosion. Mechanistic insight that leads to effective prevention of aluminum bond pad corrosion is explored and discussed. (Chapter 4) Aluminum bond pad corrosion activity and mechanistic insight at a Cu/Al bimetallic interface typically used in microelectronic packages for automotive applications were investigated by means of optical and scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX) and electrochemistry. Screening of corrosion variables (temperature, moisture, chloride ion concentration, pH) have been investigated to find their effect on corrosion rate and to better understand the Al/Cu bimetallic corrosion mechanism. The study revealed the corrosion morphology progression on aluminum alloy (Al, 0.5% Cu) under acidic chloride solution. The corrosion starts as surface roughening which evolves into a dendrite structure and later continues to grow into a mud-crack type corrosion. SEM showed the early stage of corrosion with dendritic formation usually occurs at the grain boundary. This is due to defects and a higher copper content at the grain boundary. The impact of copper bimetallic contact on aluminum corrosion was explored by sputtering copper microdots on aluminum substrate. Copper micropattern screening revealed that the corrosion is activated on the Al/Cu interface area and driven by the large potential difference; it was also seen to proceed at much higher rates than those observed with bare aluminum. Direct galvanic current measurement, linear sweep voltammetry (LSV), and Tafel plots are used to measure corrosion current and potential. Hydrogen gas evolution was also observed (for the first time) in Cu/Al bimetallic interface in areas of active corrosion. Mechanistic insight that leads to effective prevention of aluminum bond pad corrosion is explored and discussed. Micropattern corrosion screening identified hydrogen evolution and bimetallic interface as the root cause of Al pad corrosion that leads to Cu ball lift-off, a fatal defect, in Cu wire bonded device. Complete corrosion inhibition can be achieved by strategically disabling the mutually coupled cathodic and anodic reaction cycles.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Bimetallic alloys"

1

John, Ferrante, and United States. National Aeronautics and Space Administration., eds. Theoretical modelling of AFM for bimetallic tip-substrate interactions. [Washington, DC]: National Aeronautics and Space Administration, 1991.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

John, Ferrante, and United States. National Aeronautics and Space Administration., eds. Theoretical modelling of AFM for bimetallic tip-substrate interactions. [Washington, DC]: National Aeronautics and Space Administration, 1991.

Find full text
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Bimetallic alloys"

1

Morán-López, J. L., and J. M. Montejano-Carrizales. "Spatial Ordering in Bimetallic Nanostructures." In Structural and Phase Stability of Alloys, 243–58. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4615-3382-5_16.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Shafi, Kurikka V. P. M., Yuri Koltypin, Israel Felner, and Aharon Gedanken. "Sonochemical Synthesis of Amorphous Bimetallic Fe-Ni Alloys." In Properties of Complex Inorganic Solids, 169–74. Boston, MA: Springer US, 1997. http://dx.doi.org/10.1007/978-1-4615-5943-6_21.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Ramos, Maximiliano, M. Natalia Batista, Alejandra E. Martínez, and H. Fabio Busnengo. "Dynamics of H2 Interacting with Substitutional Bimetallic Surface Alloys." In Dynamics of Gas-Surface Interactions, 131–55. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-32955-5_6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Agrahari, Gargi, Arindam Sarkar, and Abhijit Chatterjee. "Effect of Solvent on Segregation Behavior in Pt-Ni Bimetallic Alloy." In Advances in Energy Research, Vol. 1, 239–47. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2666-4_24.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Baddeley, C. J. "Adsorbate induced segregation at bimetallic surfaces." In Surface Alloys and Alloys Surfaces, 495–526. Elsevier, 2002. http://dx.doi.org/10.1016/s1571-0785(02)80101-8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Rodriguez, José A., and Jan Hrbek. "Interaction of sulphur with bimetallic surfaces: Effects of structural, electronic and chemical properties." In Surface Alloys and Alloys Surfaces, 466–94. Elsevier, 2002. http://dx.doi.org/10.1016/s1571-0785(02)80100-6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Rodriguez, José A. "Electronic and chemical properties of palladium in bimetallic systems: How much do we know about heteronuclear metal-metal bonding?" In Surface Alloys and Alloys Surfaces, 438–65. Elsevier, 2002. http://dx.doi.org/10.1016/s1571-0785(02)80099-2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Wenkin, M., C. Renard, P. Ruiz, B. Delmon, and M. Devillers. "On the role of bismuth-based alloys in carbon-supported bimetallic Bi-Pd catalysts for the selective oxidation of gluconic acid." In Studies in Surface Science and Catalysis, 391–98. Elsevier, 1997. http://dx.doi.org/10.1016/s0167-2991(97)80929-9.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Saikov, Ivan Vladimirovich, Andrey Yurevich Malakhov, and Igor Vladimirovich Denisov. "Obtaining bimetallic sheets with cladding layer of aluminum alloy AMg6." In Application to Journal. Tambov University Reports. Series: Natural and Technical Sciences, 520–23. Publishing House “Derzhavinskiy”, 2018. http://dx.doi.org/10.20310/1810-0198-2018-23-123p-520-523.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Corigliano, Pasqualino, Vincenzo Crupi, and Pingsha Dong. "Fracture Mechanics Properties of Al/Steel Structural Transition Joints for Shipbuilding." In Progress in Marine Science and Technology. IOS Press, 2022. http://dx.doi.org/10.3233/pmst220086.

Full text
Abstract:
The need of lowering the weight of ships makes it crucial to have superstructures made of aluminum alloy and the ship hull made of steel. Within this context, the connection between the two different metals becomes crucial as different metals are hardly weldable using traditional techniques. Thus Structural Transition Joints are extremely important. One of the most promising welding techniques is the Explosion Welding process, which reaches a good compromise between weldability and mechanical properties of Structural Transition Joints. In the present study, the mechanical behaviour of Structural Transition Joints made of ASTM A516 structural steel, clad by explosion welding with AA5086 aluminum alloy and provided with an intermediate layer of pure aluminum was investigated. Preliminary fracture mechanics tests on CT Specimens made of Al alloy and shipbuilding grade steel were performed. Afterwards, fracture mechanics properties of the Structural Transition Joint considering a notch located at the interface between the pure aluminum and steel were evaluated experimentally following the current standards. In addition, the Digital Image Correlation technique allowed the analysis of the displacement and strain patterns of the different metals and to evaluate the crack length of the bimetallic specimen.
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Bimetallic alloys"

1

Sanabria, V., S. Gall, F. Gensch, R. Nitschke, and S. Mueller. "Backward rod extrusion of bimetallic aluminum-copper alloys at room temperature." In PROCEEDINGS OF THE 22ND INTERNATIONAL ESAFORM CONFERENCE ON MATERIAL FORMING: ESAFORM 2019. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5112529.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Xiao, Jia, Zhijun Li, Li Jiang, Linfeng Ye, Kun Yu, Jianping Liang, Shuangjian Chen, and Zezhong Chen. "Interface Microstructure and Thermal Expansion Mismatch in Alloy N/316H Bimetallic Plates." In ASME 2019 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/pvp2019-93585.

Full text
Abstract:
Abstract Two Alloy N/316H bimetallic plates have been fabricated by explosive welding and rolling technologies respectively. Metallographic observations indicate that the rolled bimetallic plate has a straight bond interface, in which some cavities and precipitates exist. While the explosive welded plate shows a wavy bond interfaces. The interface thermal expansion mismatch between the two alloys were evaluated in the two plates at high temperature. Results show that the thermal expansion coefficient of 316H is larger than that of Alloy N. The thermal expansion coefficient of the substrate plates depends on the thickness ratio between Alloy N and 316H, which reaches the maximum when the ratio is 1:4.
APA, Harvard, Vancouver, ISO, and other styles
3

MK, Muhammad Sujak, Miftahussurur Hamidi Putra, and Dede Djuhana. "Investigation of surface plasmon resonance in bimetallic Au-Ag alloys nanorod-shaped based on linear-weight calculation." In INTERNATIONAL CONFERENCE ON TRENDS IN MATERIAL SCIENCE AND INVENTIVE MATERIALS: ICTMIM 2020. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0014526.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Chumaevsky, A. V., E. A. Kolubaev, S. Yu Tarasov, V. E. Rubtsov, D. A. Guryanov, and S. Yu Nikonov. "PRODUCTION OF PROTOTYPES OF 3D-FUNCTIONAL-GRADIENT BIMETALLIC STRUCTURAL ELEMENTS FROM COPPER AND NICKEL ALLOYS BY THE METHOD OF ADDITIVE ELECTRON-BEAM ADDITIVE TECHNOLOGY." In Physical Mesomechanics of Materials. Physical Principles of Multi-Layer Structure Forming and Mechanisms of Non-Linear Behavior. Novosibirsk State University, 2022. http://dx.doi.org/10.25205/978-5-4437-1353-3-312.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Magerramova, Liubov, Michael Volkov, Anton Salnikov, and Eugene Kratt. "Development of the Functional-Gradient Turbine Wheel With Cooled Blades Without Lock Connection." In ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/gt2020-14772.

Full text
Abstract:
Abstract Wheels of high-temperature turbines are traditionally produced in the form of detachable joints of the disk and blades made from different materials. The blades, which are under the influence of high gas temperatures, are made with internal channels by air cooling. The disk is subject to significant centrifugal loads, but lower temperatures. The locking connection of the blades to the disk is a stress concentrator, which leads to resource limitation. One of the solutions is the wheel of the turbine type blisk consisting of cast-cooled blades of heat-resistant alloys and a disk of granulated nickel alloys, interconnected by hot isostatic pressing. The disk can be made of granules of different sizes in different parts. This approach is based on the fact that during operation, the disk is also subject to uneven heating and loading along the radius. The blisk design of the wheel with cooled blades is developed on the basis of the turbine wheel with a detachable connection of the blades with the disk. The blades of the blisk are produced from casting heat-resistant nickel alloy. The disk portion is created from granulated alloy with different grain sizes along the disk radius. The system of supplying cooling air in the blades of the wheel is developed. The technology of manufacturing a disk consisting of granules of various sizes and technology of connection of a disk with cooled cast blades is developed. To determine the mechanical characteristics of the zones of connection of dissimilar materials samples were tested. The combined samples were made of a granulated alloy with different sizes of granules. The bimetallic samples were made of a casting blade alloy and a granulated disk alloy. Multi-parameter optimization of the blisk was carried out. The mass of the designed wheel was reduced by more than 40% compared to the original wheel with lock connection when the strength and service life conditions were satisfied.
APA, Harvard, Vancouver, ISO, and other styles
6

Wielage, B., Th Lampke, and H. Pokhmurska. "Improvement of the Corrosion Resistance of Magnesium Alloys by Means of Coating and Remelting." In ITSC2008, edited by B. R. Marple, M. M. Hyland, Y. C. Lau, C. J. Li, R. S. Lima, and G. Montavon. Verlag für Schweißen und verwandte Verfahren DVS-Verlag GmbH, 2008. http://dx.doi.org/10.31399/asm.cp.itsc2008p1507.

Full text
Abstract:
Abstract The implementation of magnesium alloys for automotive, aeronautic and other applications is of the great importance due to their especial properties. Magnesium offers greater weight saving capacity than aluminium, as its density, 1.7 g/cm-3, is two thirds the density of aluminium, 2.7 g/cm-3, without significant loss of strength and magnesium alloys show high specific strength. On the other hand surface properties of magnesium alloys like wear and corrosion resistance are rather poor. A large amount of methods are intensively elaborated to overcome this problem from developing of new alloys, different surface treatment methods and a great variety of coating systems. In present work the results concerning improvement of corrosion and wear resistance of magnesium alloys by means of zinc based coatings are presented. Coatings are deposited on magnesium substrates (AM20, AZ31, AZ91) by arc spraying with Zn, ZnAl4 and ZnAl15 solid wires as well as by electroplating of zinc. Nevertheless the onset of bimetallic corrosion between Zn and Mg significantly increases corrosion current density. In order to provide longer protection, two main technological solutions are taken into consideration. First relies upon a modification of the main electroplating technology, second is based on the selection of an effective post treatment. For the first approach a consecutive process is elaborated based on the two-step electrodeposition. The first is from alkaline bath followed by the second step in acidic chloride bath. A dense and compact complex layer is obtained. The second approach is based on the post treatment of deposited coatings and provides a formation of thick and uniform reaction layer in magnesium on the interface between zinc or zinc based coating and substrate. These layers have fine eutectic structure with microhardness 3-4 times higher than that of the base material. Heat treatment is carried out with focused irradiation of tungsten halogen lamp line heater in atmosphere. Microstructure of deposited coatings as well as that of modified surface layers is investigated by metallographic methods. Corrosion properties are estimated by electrochemical measurements. Abrasion wear resistance of the modified layers is determined by scratch test and oscillating wear tests. It is shown that the both applied methods improve corrosion properties of magnesium alloys. Electrolytic zinc coatings deposited by electroplating in the elaborated two- step process demonstrate good barrier properties. Durability increases about three times in comparison with a single coat obtained from alkaline bath. Infra red heat treatment of thermal spray coatings results in formation of modified layers in magnesium substrates that prevent the galvanic corrosion of investigated systems. Wear resistance of reaction layers is up to 4 times higher to compare with the base material.
APA, Harvard, Vancouver, ISO, and other styles
7

Korotkikh, A. G., V. A. Arkhipov, O. G. Glotov, I. V. Sorokin, and E. A. Selikhova. "IGNITION, COMBUSTION, AND AGGLOMERATION OF HIGH-ENERGY MATERIALS BASED ON ALUMINUM AND BORON." In 8TH INTERNATIONAL SYMPOSIUM ON NONEQUILIBRIUM PROCESSES, PLASMA, COMBUSTION, AND ATMOSPHERIC PHENOMENA. TORUS PRESS, 2020. http://dx.doi.org/10.30826/nepcap2018-2-02.

Full text
Abstract:
The burning rate control of the high-energy materials (HEM) is mainly achieved by introducing the catalysts in composite solid propellant as well as by partial or complete replacement of ammonium perchlorate (AP) and ammonium nitrate by nitramines that change the equivalence ratio of formulation, or by varying the particle size of oxidizer and metal fuels. Promising metallic fuels are highly dispersed aluminum powders, which are characterized by different dispersity and passivation method, as well as bimetallic powders or mixtures of aluminum and other metals, their alloys, and metal powders with various coatings. In this study, the Al-based, Al/B-based, and Al/Fe-based HEM compositions have been used for comparative analysis of the ignition, combustion, and agglomeration characteristics. At the use of boron additive in the Al-based HEM, the ignition time is decreased by a factor of 1.2-1.4 and the burning rate is virtually unchanged as compared with that for the Al-based HEM. However, the agglomeration is significantly enhanced, which is manifested in the increase in the agglomerate particle content in condensed combustion products (CCP), increase in the agglomerate mean diameter, and increase in the unburned metal fraction in agglomerates.
APA, Harvard, Vancouver, ISO, and other styles
8

Pop, Petru A., Petru Ungur, Juan Lopez Martinez, and Gheorghe Bejinaru-Mihoc. "Theoretical and Practical Estimations Regarding of Borderline Conditions Imposed for Qualitative Achievement of Sliding Bimetallic Bearings From Steel-Bronze." In ASME 2009 International Manufacturing Science and Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/msec2009-84193.

Full text
Abstract:
The paper has presented the reduced structure of horizontal centrifugal casting mechanism by high frequency current of bimetallic bushes from steel-bronze, with a chemical stability treatment of borderline alloy layer. This stabilizer borderline layer at interference of inner cylindrical surfaces from steel and external surfaces from bronze, has achieved by adding into filler metal of Cu-Sn a supplier non-ferrous metal added, with great specific weight and low melting point as Cu-Sn alloy, for example Sn with contents of 1% from Cu-Sn alloy. At high temperature and pressure, Sn is forming with Fe from steel mass of bimetallic bearing an inter-metallic compound FeSn2, which reactions with Cu-Sn alloy due to a stable metallic connection. The experimental tests have realized at Machine Tools ‘Infratirea’ Co from Oradea, achieved bimetallic bearings of steel-bronze, with a good physical and thermal stability and well adhesion between antifriction steel with bronze.
APA, Harvard, Vancouver, ISO, and other styles
9

Wilhelm, Dr S. M., Dr R. D. Kane, Dr S. Matsui, Dr T. Yoshida, and T. Iwase. "Evaluation of Alloy 625 Steel Bimetallic Pipe for Petroleum Service." In Superalloys. TMS, 1991. http://dx.doi.org/10.7449/1991/superalloys_1991_771_791.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Bala, Saroj, Sumit Dokwal, Suman Mahendia, and Shyam Kumar. "LSPR based sensing of liquid ammonia using bimetallic (AgAu) alloy nanorods." In DAE SOLID STATE PHYSICS SYMPOSIUM 2018. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5112969.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Bimetallic alloys"

1

Koel, B. E. Chemistry of bimetallic and alloys surfaces. Office of Scientific and Technical Information (OSTI), October 1991. http://dx.doi.org/10.2172/6105909.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Chen, Jingguan. Structure-Property Relationship in Metal Carbides and Bimetallic Alloys. Office of Scientific and Technical Information (OSTI), March 2014. http://dx.doi.org/10.2172/1121881.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Koel, B. E. Chemistry of bimetallic and alloys surfaces. Progress report, June 1, 1990--November 30, 1991. Office of Scientific and Technical Information (OSTI), October 1991. http://dx.doi.org/10.2172/10105688.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Koel, B. E. Chemistry of bimetallic and alloy surfaces. Office of Scientific and Technical Information (OSTI), October 1991. http://dx.doi.org/10.2172/6267713.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Koel, B. E. Chemistry of bimetallic and alloy surfaces. Office of Scientific and Technical Information (OSTI), January 1992. http://dx.doi.org/10.2172/6826923.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Koel, B. E. Chemistry of bimetallic and alloy surfaces. Progress report, June 1, 1990--November 30, 1991. Office of Scientific and Technical Information (OSTI), October 1991. http://dx.doi.org/10.2172/10105182.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Koel, B. E. Chemistry of bimetallic and alloy surfaces. Progress report, June 1, 1990--September 11, 1992. Office of Scientific and Technical Information (OSTI), December 1992. http://dx.doi.org/10.2172/10116504.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

FATIGUE BEHAVIOUR OF TITANIUM-CLAD BIMETALLIC STEEL PLATE WITH DIFFERENT INTERFACIAL CONDITIONS. The Hong Kong Institute of Steel Construction, August 2022. http://dx.doi.org/10.18057/icass2020.p.273.

Full text
Abstract:
Titanium-clad (TC) bimetallic steel is a type of high-performance steel, with high corrosion resistance attributed to the titanium alloy and economy as well as excellent mechanical properties resulted from structural steel. Such advanced bimetallic steel is suitable for marine structures, bridges, and buildings exposed to the highly corrosive environment. This paper aims to clarify the high cycle fatigue properties of the hot-rolled TC bimetallic steel with two interface shear strengths of 40MPa and 140MPa. Their stress-strain curves were obtained by the tensile coupon tests. The fatigue S-N curves of TC bimetallic steel at a stress ratio of 0.1 are introduced, which show excellent fatigue performance compared with structural steel. In addition, the hot-rolled TC bimetallic steel with 140 MPa interface shear strength has 21% improvement in fatigue performance than the other one. Despite this, the influence of the interfacial conditions on the high cycle fatigue performance is generally limited. Finally, the S-N curves suitable for these two kinds of TC bimetallic steel are suggested. The research outcomes can provide a reference for understanding the fatigue behaviour of the TC bimetallic steel and the selection of different interfacial conditions in structural engineering
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Bimetallic alloys' for particular source types:
Journal articles Dissertations / Theses
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography