Journal articles: 'Nanostructuring of metals'

1

Vorobyev, A. Y., and Chunlei Guo. "Femtosecond laser nanostructuring of metals." Optics Express 14, no. 6 (2006): 2164. http://dx.doi.org/10.1364/oe.14.002164.

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Kabaldin, Yu G. "Nanostructuring of metals in fatigue loading." Russian Engineering Research 28, no. 6 (June 2008): 559–65. http://dx.doi.org/10.3103/s1068798x08060105.

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Alejandro-Arellano, Marta, Thearith Ung, Álvaro Blanco, Paul Mulvaney, and Luis M. Liz-Marzán. "Silica-coated metals and semiconductors. Stabilization and nanostructuring." Pure and Applied Chemistry 72, no. 1-2 (January 1, 2000): 257–67. http://dx.doi.org/10.1351/pac200072010257.

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We present in this paper the use of silica-coating for nanostructuring metal and semiconductor nanoparticles. The basic concept is the strict tailoring of the interparticle spacing through the thickness of the silica shell. Three different experiments are presented that exemplify this concept. The first example consists of the preparation of thin films using the layer-by-layer self-assembly of gold nanoparticles, either uncoated or coated with thin silica shells. The observed optical effects are interpreted using effective medium theory. The second and third experiments are related to the preparation of three-dimensional nanostructures, either as concentrated dispersions of thickly coated Au or CdS nanoparticles, or as opals prepared from such core-shell nanoparticles. Within these crystalline solids, intercore distance is again dictated by the thickness of the silica shells.

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Lowe, Terry C. "Status of Commercialization of Nanostructured Metals." Materials Science Forum 667-669 (December 2010): 1145–51. http://dx.doi.org/10.4028/www.scientific.net/msf.667-669.1145.

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Nanostructured metals hold the potential to significantly augment the product portfolios of the metals industry. This potential is being progressively developed through contributions from the academic community to the underlying science of nanostructuring, increasing development and protection of intellectual property, and the involvement of large corporations. In this paper we review the trends and status of the commercialization of nanostructured metals technology, focusing on metals produced by severe plastic deformation.

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Tarasov, S., V. Rubtsov, and A. Kolubaev. "Subsurface shear instability and nanostructuring of metals in sliding." Wear 268, no. 1-2 (January 2010): 59–66. http://dx.doi.org/10.1016/j.wear.2009.06.027.

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Ashitkov, S. I., P. S. Komarov, A. V. Ovchinnikov, E. V. Struleva, V. V. Zhakhovskii, N. A. Inogamov, and M. B. Agranat. "Ablation and nanostructuring of metals by femtosecond laser pulses." Quantum Electronics 44, no. 6 (June 30, 2014): 535–39. http://dx.doi.org/10.1070/qe2014v044n06abeh015448.

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7

Valiev, Ruslan. "Nanostructuring of metals by severe plastic deformation for advanced properties." Nature Materials 3, no. 8 (August 2004): 511–16. http://dx.doi.org/10.1038/nmat1180.

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SHEN, MENGYAN. "NANOSTRUCTURING SOLID SURFACES WITH FEMTOSECOND LASER IRRADIATIONS FOR APPLICATIONS." Modern Physics Letters B 24, no. 03 (January 30, 2010): 257–69. http://dx.doi.org/10.1142/s0217984910022457.

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Pulsed laser-assisted etching is a simple but effective method for fabricating small regular structures directly onto a surface. We have successfully fabricated submicro- or nano-meter sized spikes on a solid surface immersed in liquids with femtosecond laser pulse irradiations. This method is applicable to different metals such as stainless steel, copper, titanium, cobalt, as well as different semiconductors, such as Si and GaAs. The femtosecond laser method is much faster than other methods. We can control the experimental conditions to design and fabricate nanostructures in different materials and on the surfaces with different morphologies. Here, we discuss the nanostructures formation with femtosecond pulse laser irradiations, and introduce our results of the nanostructure for applications in sensing, biology and artificial photosynthesis. The femtosecond laser irradiation technique can efficiently integrate metal, semiconductor and polymer nanostructures in various small devices to leverage the expertise in other research fields and applications.

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Emel’yanov, V. I. "The 3D Kuramoto-Sivashinsky Equation for Nonequilibrium Defects Interacting through Self-Consisting Strain and Nanostructuring of Solids." ISRN Nanomaterials 2013 (October 21, 2013): 1–6. http://dx.doi.org/10.1155/2013/981616.

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It is shown that the bulk defect-deformational (DD) nanostructuring of isotropic solids can be described by a closed three-dimensional (3D) nonlinear DD equation of the Kuramoto-Sivashinsry (KS) type for the nonequilibrium defect concentration, derived here in the framework of the nonlocal elasticity theory (NET). The solution to the linearized DDKS equation describes the threshold appearance of the periodic self-consistent strain modulation accompanied by the simultaneous formation of defect piles at extremes of the strain. The period and growth rate of DD nanostructure are determined. Based on the obtained results, a novel mechanism of nanostructuring of solids under the severe plastic deformation (SPD), stressing the role of defects generation and selforganization, described by the DDKS, is proposed. Theoretical dependencies of nanograin size on temperature and shear strain reproduce well corresponding critical dependencies obtained in experiments on nanostructuring of metals under the SPD, including the effect of saturation of nanofragmentation. The scaling parameter of the NET is estimated and shown to determine the limiting small grain size.

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Popov, V. V., E. N. Popova, V. P. Pilyugin, D. D. Kuznetsov, and A. V. Stolbovsky. "Nanostructuring of pure metals by severe plastic deformation at cryogenic temperatures." IOP Conference Series: Materials Science and Engineering 63 (August 8, 2014): 012096. http://dx.doi.org/10.1088/1757-899x/63/1/012096.

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Cai, Bin, Sebastian Henning, Juan Herranz, Thomas J. Schmidt, and Alexander Eychmüller. "Nanostructuring Noble Metals as Unsupported Electrocatalysts for Polymer Electrolyte Fuel Cells." Advanced Energy Materials 7, no. 23 (August 28, 2017): 1700548. http://dx.doi.org/10.1002/aenm.201700548.

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Gurau, G., C. Gurau, L. G. Bujoreanu, and V. Sampath. "A Versatile Method for Nanostructuring Metals, Alloys and Metal Based Composites." IOP Conference Series: Materials Science and Engineering 209 (June 2017): 012036. http://dx.doi.org/10.1088/1757-899x/209/1/012036.

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13

Kuts, Roman I., Victor P. Korolkov, Vladimir N. Khomutov, Anatoly I. Malyshev, and Sergey L. Mikerin. "STUDY OF FILMS OF TRANSITION METALS AS MATERIALS FOR LASER NANOSTRUCTURING." Interexpo GEO-Siberia 8 (May 21, 2021): 241–47. http://dx.doi.org/10.33764/2618-981x-2021-8-241-247.

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This paper presents the results of a study of direct laser writing on thin films of transition metals (Hf, Ti, Zr, Ta, V). The films were deposited on fused silica substrates. A comparison of laser writing on the indicated films is carried out from the point of view of the presence of contour writing. As it was proved earlier, when writing on zirconium films, contour writing leads to formation of periodic nanostructures with a period equal to the writing step (250-500 nm). Materials were identified that are promising from the point of view of writing oxide nanostructures for the further formation of the diffraction phase microrelief of DOEs.

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Timoshenkov, Sergei, Dahir Gaev, and Anton Boyko. "The Use of Porous Silicon for Nanostructuring of Functional Metal Layers for MEMS." Applied Mechanics and Materials 313-314 (March 2013): 108–11. http://dx.doi.org/10.4028/www.scientific.net/amm.313-314.108.

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The results of studies relating to the use of porous silicon as the basis for the creation of nanostructured getter layers for MEMS are presented. New technical solutions, in which the porous silicon with pores of micro- and nanometer range is used as a matrix for the deposition of reactive metals or metal alloys, were developed. The research results can be used to create getters for MEMS, as well as in other areas which require the creation of structures with a developed surface.

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Kushwaha, Amanendra K., Merbin John, Manoranjan Misra, and Pradeep L. Menezes. "Nanocrystalline Materials: Synthesis, Characterization, Properties, and Applications." Crystals 11, no. 11 (October 29, 2021): 1317. http://dx.doi.org/10.3390/cryst11111317.

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Nanostructuring is a commonly employed method of obtaining superior mechanical properties in metals and alloys. Compared to conventional polycrystalline counterparts, nanostructuring can provide remarkable improvements in yield strength, toughness, fatigue life, corrosion resistance, and hardness, which is attributed to the nano grain size. In this review paper, the current state-of-the-art of synthesis methods of nanocrystalline (NC) materials such as rapid solidification, chemical precipitation, chemical vapor deposition, and mechanical alloying, including high-energy ball milling (HEBM) and cryomilling was elucidated. More specifically, the effect of various process parameters on mechanical properties and microstructural features were explained for a broad range of engineering materials. This study also explains the mechanism of grain strengthening using the Hall-Petch relation and illustrates the effects of post-processing on the grain size and subsequently their properties. This review also reports the applications, challenges, and future scope for the NC materials.

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Olejnik, Lech, Andrzej Rosochowski, and Maria W. Richert. "Incremental ECAP of Plates." Materials Science Forum 584-586 (June 2008): 108–13. http://dx.doi.org/10.4028/www.scientific.net/msf.584-586.108.

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Batch severe plastic deformation (SPD) processes are mainly used for laboratory purposes. More industrially oriented are continuous processes among which the new SPD process of Incremental Equal Channel Angular Pressing (I-ECAP) is an attractive option. This paper investigates the feasibility of using I-ECAP for nanostructuring of plates rather than bars. First, a 3D finite element simulation has been performed which shows the importance of restricting material flow in the direction of plate width. A laboratory rig has been designed, which converts the vertical movement of the machine crosshead into an oblique movement of the reciprocating punch. Preliminary trials of I-ECAP have been carried out on a 4x30x100mm Al 1070 plate. Metallurgical samples after 4 and 8 passes of I-ECAP (route A) have been investigated using TEM. In conclusion, the new SPD process of I-ECAP is capable of processing plates, which opens up new possibilities of nanostructuring metals on an industrial scale.

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Mamajonov, Marufjon Mukhtorovich, Pavel Evgenievich Lushchik, Murodjon Turgunbaevich Botirov, and Yuri Gennadievich Alekseev. "Problems of Increasing the Biocompatibility of Materials Used in Medicine." International Journal of Multicultural and Multireligious Understanding 8, no. 7 (July 24, 2021): 419. http://dx.doi.org/10.18415/ijmmu.v8i7.2915.

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A review of modern literature on the development of biocompatible implants based on modern technologies, including bioengineering and nanostructuring, is presented. The advantages and disadvantages of implants based on metals and alloy, ways of improving their biological and mechanical properties are shown. In connection with the rapid development of many branches of science and technology, as well as in medicine, the problem arose of obtaining new materials, in particular, alloys with valuable physicochemical properties, which are used for the implant of cardiology, traumatology, orthopedics and other industries. Study of biocompatibility of medical devices based on metals and alloys, search for ways to overcome the low engraftability of implanted structures.

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18

Gentili, Denis, Ilse Manet, Fabiola Liscio, Marianna Barbalinardo, Silvia Milita, Cristian Bettini, Laura Favaretto, Manuela Melucci, Alessandro Fraleoni-Morgera, and Massimiliano Cavallini. "Control of polymorphism in thiophene derivatives by sublimation-aided nanostructuring." Chemical Communications 56, no. 11 (2020): 1689–92. http://dx.doi.org/10.1039/c9cc09507a.

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19

Makarov, A. V., R. A. Savrai, P. A. Skorynina, and E. G. Volkova. "Development of Methods for Steel Surface Deformation Nanostructuring." Metal Science and Heat Treatment 62, no. 1-2 (May 2020): 61–69. http://dx.doi.org/10.1007/s11041-020-00513-4.

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20

Ivanov, D. S., A. I. Kuznetsov, V. P. Lipp, B. Rethfeld, B. N. Chichkov, M. E. Garcia, and W. Schulz. "Short laser pulse nanostructuring of metals: direct comparison of molecular dynamics modeling and experiment." Applied Physics A 111, no. 3 (March 22, 2013): 675–87. http://dx.doi.org/10.1007/s00339-013-7656-9.

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21

Moreno, Enrique, Huu Dat Nguyen, Razvan Stoian, and Jean-Philippe Colombier. "Full Explicit Numerical Modeling in Time-Domain for Nonlinear Electromagnetics Simulations in Ultrafast Laser Nanostructuring." Applied Sciences 11, no. 16 (August 12, 2021): 7429. http://dx.doi.org/10.3390/app11167429.

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The purpose of this paper is to present a new and accurate, fully explicit finite-difference time-domain method for modeling nonlinear electromagnetics. The approach relies on a stable algorithm based on a general vector auxiliary differential equation in order to solve the curl Maxwell’s equation in a frequency-dependent and nonlinear medium. The energy conservation and stability of the presented scheme are theoretically proved. The algorithms presented here can accurately describe laser pulse interaction with metals and nonlinear dielectric media interfaces where Kerr and Raman effects, as well as multiphoton ionization and metal dispersion, occur simultaneously. The approach is finally illustrated by simulating the nonlinear propagation of an ultrafast laser pulse through a dielectric medium transiently turning to inhomogeneous metal-like states by local free-electron plasma formation. This free carrier generation can also be localized in the dielectric region surrounding nanovoids and embedded metallic nanoparticles, and may trigger collective effects depending on the distance between them. The proposed numerical approach can also be applied to deal with full-wave electromagnetic simulations of optical guided systems where nonlinear effects play an important role and cannot be neglected.

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22

Markushev, M. V., E. A. Avtokratova, R. R. Ilyasov, S. V. Krymskiy, and O. Sh Sitdikov. "Effect of Aging on the Nanostructuring and Strength of a D16 Aluminum Alloy." Russian Metallurgy (Metally) 2018, no. 10 (October 2018): 980–84. http://dx.doi.org/10.1134/s0036029518100130.

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23

Pereira, A., A. Cros, P. Delaporte, S. Georgiou, A. Manousaki, W. Marine, and M. Sentis. "Surface nanostructuring of metals by laser irradiation: effects of pulse duration, wavelength and gas atmosphere." Applied Physics A 79, no. 4-6 (September 2004): 1433–37. http://dx.doi.org/10.1007/s00339-004-2804-x.

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24

Wang, Chaoyang, Zhangyi Li, Shengli Zhu, Yanqin Liang, Zhenduo Cui, Shuilin Wu, Chunling Qin, Shuiyuan Luo, and Akihisa Inoue. "Dual-phase nanostructuring as a route to flexible nanoporous metals with outstanding comprehensive mechanical properties." Science China Materials 64, no. 9 (March 12, 2021): 2289–304. http://dx.doi.org/10.1007/s40843-020-1606-4.

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25

Zhang, Xiao, Yiming Zhou, Yanling Pei, Yuexing Chen, Bifei Yuan, Shuangmei Zhang, Yuan Deng, Shengkai Gong, Jiaqing He, and Li-Dong Zhao. "Enhancing thermoelectric performance of SnTe via nanostructuring particle size." Journal of Alloys and Compounds 709 (June 2017): 575–80. http://dx.doi.org/10.1016/j.jallcom.2017.02.283.

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26

Silaeva, Elena, Louis Saddier, and Jean-Philippe Colombier. "Drude-Lorentz Model for Optical Properties of Photoexcited Transition Metals under Electron-Phonon Nonequilibrium." Applied Sciences 11, no. 21 (October 23, 2021): 9902. http://dx.doi.org/10.3390/app11219902.

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Evaluating the optical properties of matter under the action of ultrafast light is crucial in modeling laser–surface interaction and interpreting laser processing experiments. We report optimized coefficients for the Drude-Lorentz model describing the permittivity of several transition metals (Cr, W, Ti, Fe, Au, and Ni) under electron-phonon nonequilibrium, with electrons heated up to 30,000 K and the lattice staying cold at 300 K. A Basin-hopping algorithm is used to fit the Drude-Lorentz model to the nonequilibrium permittivity calculated using ab initio methods. The fitting coefficients are provided and can be easily inserted into any calculation requiring the optical response of the metals during ultrafast irradiation. Moreover, our results shed light on the electronic structure modifications and the relative contributions of intraband and interband optical transitions at high electron temperatures corresponding to the laser excitation fluence used for surface nanostructuring.

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Garah, Mohamed El, Artur Ciesielski, Nicolas Marets, Véronique Bulach, Mir Wais Hosseini, and Paolo Samorì. "Molecular tectonics based nanopatterning of interfaces with 2D metal–organic frameworks (MOFs)." Chem. Commun. 50, no. 82 (2014): 12250–53. http://dx.doi.org/10.1039/c4cc03622k.

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The nanostructuring of the graphite surface with 2DMOF, based on a combination of an acentric porphyrin tecton and a CoCl₂metallatecton, was achieved at the solid–liquid interface and characterized by scanning tunnelling microscopy.

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Fanelli, E., P. Pernice, M. Xiao, A. Aronne, and V. N. Sigaev. "Crystallization Behaviour and Nanostructuring in Alkali Niobiosilicate Glasses." Journal of Materials Science & Technology 27, no. 2 (February 2011): 189–92. http://dx.doi.org/10.1016/s1005-0302(11)60047-9.

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29

Sim, Yelyn, Jude John, Subramani Surendran, Byeolee Moon, and Uk Sim. "Efficient Photoelectrochemical Water Splitting Reaction using Electrodeposited Co3Se4 Catalyst." Applied Sciences 9, no. 1 (December 21, 2018): 16. http://dx.doi.org/10.3390/app9010016.

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Photoelectrochemical water splitting is a promising field for sustainable energy production using hydrogen. Development of efficient catalysts is essential for resourceful hydrogen production. The most efficient catalysts reported to date have been extremely precious rare-earth metals. One of the biggest hurdles in this research area is the difficulty of developing highly efficient catalysts comparable to the noble metal catalysts. Here, we report that non-noble metal dichalcogenide (Co3Se4) catalysts made using a facile one-pot electrodeposition method, showed highly efficient photoelectrochemical activity on a Si photocathode. To enhance light collection and enlarge its surface area even further, we implemented surface nanostructuring on the Si surface. The nanostructured Si photoelectrode has an effective area greater than that of planar silicon and a wider absorption spectrum. Consequently, this approach exhibits reduced overvoltage as well as increased photo-catalytic activity. Such results show the importance of controlling the optimized interface between the surface structure of the photoelectrode and the electrodeposited co-catalyst on it to improve catalytic activity. This should enable other electrochemical reactions in a variety of energy conversion systems.

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Valiev, Ruslan. "Major Landmarks of NanoSPD Activity: International Conferences from NanoSPD1 to NanoSPD5." Materials Science Forum 667-669 (December 2010): 3–8. http://dx.doi.org/10.4028/www.scientific.net/msf.667-669.3.

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Nanjing University is hosting the 5-th in a row of NanoSPD conferences, which continues a series of the preceding conferences: in Moscow (1999), Vienna (2002), Fukuoka (2005) and Goslar (2008). This paper highlights the major landmarks of NanoSPD activity for the past years from the standpoint of the International NanoSPD Steering Committee. Special attention is given to topics relating to nanostructuring of metals by SPD processing for advanced properties as well as new trends in developing SPD techniques for practical application. Another concern of the committee is in introduction and discussion of the terminology applied in this new field of science and engineering.

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Tarasov, S., V. Rubtsov, and A. Kolubaev. "Corrigendum to “Subsurface shear instability and nanostructuring of metals in sliding” [Wear 268 (2010) 59–66]." Wear 268, no. 5-6 (February 2010): 853. http://dx.doi.org/10.1016/j.wear.2009.11.009.

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32

Vorobyev, A. Y., and Chun Lei Guo. "Optical and Wetting Properties of Femtosecond Laser Nanostructured Materials." Journal of Nano Research 14 (April 2011): 57–67. http://dx.doi.org/10.4028/www.scientific.net/jnanor.14.57.

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We modify optical and wetting properties of solids using a femtosecond laser surface nanostructuring technique. We demonstrate that this technique allows creating black and color metals. Absorptance of black titanium created in our study is measured to be about 90-97% over a broad wavelength range from the ultraviolet to infrared. Moreover, our technique can be also used for modifying wetting properties of solids. Here, we create a novel surface structure that transforms regular silicon to superwicking. This surface structure makes water run vertically uphill in a gravity defying way. Our study of the liquid motion shows that the extraordinarily strong self-propelling motion of water is due to a capillary effect from the surface structures we created.

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Valiev, Ruslan. "Recent Developments of Severe Plastic Deformation Techniques for Processing Bulk Nanostructured Materials." Materials Science Forum 579 (April 2008): 1–14. http://dx.doi.org/10.4028/www.scientific.net/msf.579.1.

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Since the mid-1990’s the fabrication of bulk nanostructured metals and alloys using severe plastic deformation (SPD) has been evolving as a rapidly advancing direction of modern nano-materials science that is aimed at developing materials with new mechanical and functional properties for advanced applications. This paper highlights and considers two new trends in SPD processing, which are recently being developed for fabrication of bulk nanostructured materials (BNM). One of these recent developments is associated with nanostructuring of metals and alloys by SPD processing for advanced properties. The new strategies and approaches to produce nanometals with enhanced and often unique properties are discussed. Another new direction is the progress in the processing of BNM not only at laboratory scale but also at the level semi-products (sheets, wires, rods, etc.) suitable for production implementation. The paper considers these developments together with the examples performed at our laboratory in Ufa (Russia), which lay a firm foundation for the BNM use in advanced structural and functional applications.

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Valiev, Ruslan. "Nanostructuring of metallic materials by spd processing for advanced properties." International Journal of Materials Research 100, no. 6 (June 2009): 757–61. http://dx.doi.org/10.3139/146.110095.

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Prudent, Mathilde, Florent Bourquard, Alejandro Borroto, Jean-François Pierson, Florence Garrelie, and Jean-Philippe Colombier. "Initial Morphology and Feedback Effects on Laser-Induced Periodic Nanostructuring of Thin-Film Metallic Glasses." Nanomaterials 11, no. 5 (April 22, 2021): 1076. http://dx.doi.org/10.3390/nano11051076.

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Surface nanostructuring by femtosecond laser is an efficient way to manipulate surface topography, creating advanced functionalities of irradiated materials. Thin-film metallic glasses obtained by physical vapor deposition exhibit microstructures free from grain boundaries, crystallites and dislocations but also characterized by a nanometric surface roughness. These singular properties make them more resilient to other metals to form laser-induced nanopatterns. Here we investigate the morphological response of Zr65Cu35 alloys under ultrafast irradiation with multipulse feedback. We experimentally demonstrate that the initial columnar microstructure affects the surface topography evolution and conditions the required energy dose to reach desired structures in the nanoscale domain. Double pulses femtosecond laser irradiation is also shown to be an efficient strategy to force materials to form uniform nanostructures even when their thermomechanical properties have a poor predisposition to generate them.

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Sebastián-Pascual, Paula, Inês Jordão Pereira, and María Escudero-Escribano. "Tailored electrocatalysts by controlled electrochemical deposition and surface nanostructuring." Chemical Communications 56, no. 87 (2020): 13261–72. http://dx.doi.org/10.1039/d0cc06099b.

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Maksimov, S. K., and K. S. Maksimov. "Mechanism of nanostructuring in fluorite-like Ca1 − x La x F2 + x." Inorganic Materials 43, no. 5 (May 2007): 551–56. http://dx.doi.org/10.1134/s0020168507050202.

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Norouzzadeh, Payam, Kenneth F. Ede, and Daryoosh Vashaee. "The effect of nanostructuring on the spectral population of electrons and phonons." Journal of Alloys and Compounds 753 (July 2018): 234–38. http://dx.doi.org/10.1016/j.jallcom.2018.04.243.

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Baghdadi, Neazar, Abdu Saeed, Akhalakur Rahman Ansari, Ahmed H. Hammad, Ahmed Afify, and Numan Salah. "Controlled nanostructuring via aluminum doping in CuO nanosheets for enhanced thermoelectric performance." Journal of Alloys and Compounds 869 (July 2021): 159370. http://dx.doi.org/10.1016/j.jallcom.2021.159370.

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Fernandez, Javier G., Christopher A. Mills, Elena Martinez, Maria J. Lopez-Bosque, Xavier Sisquella, Abdelhamid Errachid, and Josep Samitier. "Micro- and nanostructuring of freestanding, biodegradable, thin sheets of chitosan via soft lithography." Journal of Biomedical Materials Research Part A 85A, no. 1 (2008): 242–47. http://dx.doi.org/10.1002/jbm.a.31561.

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41

Semenova, Irina P., Evgeniya B. Yakushina, Veronika V. Nurgaleeva, and Ruslan Z. Valiev. "Nanostructuring of Ti-alloys by SPD processing to achieve superior fatigue properties." International Journal of Materials Research 100, no. 12 (December 2009): 1691–96. http://dx.doi.org/10.3139/146.110234.

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42

Peppler, Klaus, Manuel Pölleth, Sebastian Meiss, Marcus Rohnke, and Jürgen Janek. "Electrodeposition of Metals for Micro- and Nanostructuring at Interfaces between Solid, Liquid and Gaseous Conductors: Dendrites, Whiskers and Nanoparticles." Zeitschrift für Physikalische Chemie 220, no. 10 (October 2006): 1507–27. http://dx.doi.org/10.1524/zpch.2006.220.10.1507.

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43

Valiev, Ruslan Z. "Grain Boundary Design of Bulk Nanomaterials for Advanced Properties." Diffusion Foundations 5 (July 2015): 43–54. http://dx.doi.org/10.4028/www.scientific.net/df.5.43.

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Nanostructuring of metals and alloys by severe plastic deformation techniques is an effective way of enhancing their mechanical and functional properties. The features of the nanostructured materials produced by severe plastic deformation (SPD) are stipulated by forming of ultrafine-sized grains as well as by the state of grain boundaries. The concept of grain boundary (GB) design of ultrafine-grained metals and alloys is developed for enhancement of their properties by tailoring grain boundaries of different types (low-angle and high-angle ones, special and random, equilibrium and nonequilibrium) and formation of grain boundary segregations and precipitations by SPD processing. The paper presents experimental data demonstrating the super-strength and “positive” slope of the Hall-Petch relation when passing from micro-to nanostructured state in a number of metallic materials subjected to severe plastic deformation. The nature of the superior strength is associated with new strengthening mechanisms and the difficulty of generation of dislocations from grain boundaries with segregations. This new approach is used for achieving the enhanced strength in several commercial Al and Ti alloys as well as steels subjected to SPD processing.

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44

Rogl, G., J. Bursik, A. Grytsiv, S. Puchegger, V. Soprunyuk, W. Schranz, X. Yan, E. Bauer, and P. Rogl. "Nanostructuring as a tool to adjust thermal expansion in high ZT skutterudites." Acta Materialia 145 (February 2018): 359–68. http://dx.doi.org/10.1016/j.actamat.2017.12.001.

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Sun, Youyi, and Alexey Y. Ganin. "The Synergistic Effects of Alloying on the Performance and Stability of Co3Mo and Co7Mo6 for the Electrocatalytic Hydrogen Evolution Reaction." Hydrogen 1, no. 1 (October 10, 2020): 11–21. http://dx.doi.org/10.3390/hydrogen1010002.

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Metal alloys have become a ubiquitous choice as catalysts for electrochemical hydrogen evolution in alkaline media. However, scarce and expensive Pt remains the key electrocatalyst in acidic electrolytes, making the search for earth-abundant and cheaper alternatives important. Herein, we present a facile and efficient synthetic route towards polycrystalline Co3Mo and Co7Mo6 alloys. The single-phased nature of the alloys is confirmed by X-ray diffraction and electron microscopy. When electrochemically tested, they achieve competitively low overpotentials of 115 mV (Co3Mo) and 160 mV (Co7Mo6) at 10 mA cm−2 in 0.5 M H2SO4, and 120 mV (Co3Mo) and 160 mV (Co7Mo6) at 10 mA cm−2 in 1 M KOH. Both alloys outperform Co and Mo metals, which showed significantly higher overpotentials and lower current densities when tested under identical conditions, confirming the synergistic effect of the alloying. However, the low overpotential in Co3Mo comes at the price of stability. It rapidly becomes inactive when tested under applied potential bias. On the other hand, Co7Mo6 retains the current density over time without evidence of current decay. The findings demonstrate that even in free-standing form and without nanostructuring, polycrystalline bimetallic electrocatalysts could challenge the dominance of Pt in acidic media if ways for improving their stability were found.

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Polyakova, M. A., K. Narasimhan, M. J. N. V. Prasad, K. G. Pivovarova, A. E. Gulin, and Yu Yu Efimova. "Peculiarities of structure formation of steel carbon wire of perlite class after a combined deformation processing." Ferrous Metallurgy. Bulletin of Scientific , Technical and Economic Information, no. 10 (November 9, 2018): 74–81. http://dx.doi.org/10.32339/0135-5910-2018-10-74-81.

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Creation of methods of metals and alloys deformation nanostructuring, which could be adapted into existing industrial plant by their technological parameters and productivity, is one of actual problems to be solved at present by researchers.Description of a wire combined deformation processing bydrawing with bending and twisting presented. Results of metallographic study of high-carbon wire of Stal 70 grade steel indicated specific peculiarities of influence of different kinds of plastic deformation combining on the steel structure. Mechanical tests of the wire after different kinds of combined processing showed, that such a processing provides combination of strength and ductility, typical for a steel with ultrafine grain structure. Using a method of differential scanning calorimetry, the stored energy value and calorimetric peak temperature value of deformed wire made of high-carbon Stal 70 steel determined. It was shown, that the stored energy value and calorimetric peak temperature value are sensitive to technological parameters of combined deformation processing change.

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Kumar, Pramod, G. S. Mahobia, V. Singh, and K. Chattopadhyay. "LCF life improvement of biomedical Ti–13Nb–13Zr alloy through surface nanostructuring." Materials Research Express 6, no. 12 (December 4, 2019): 125413. http://dx.doi.org/10.1088/2053-1591/ab59fd.

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Johnson, L. J. S., N. Ghafoor, D. Engberg, M. Thuvander, K. Stiller, M. Odén, and L. Hultman. "Self-organized nanostructuring in Zr0.69Al0.31N thin films studied by atom probe tomography." Thin Solid Films 615 (September 2016): 233–38. http://dx.doi.org/10.1016/j.tsf.2016.07.034.

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Bieberle-Hütter, A., I. Tanyeli, R. Lavrijsen, B. Koopmans, R. Sinha, and M. C. M. van de Sanden. "Nanostructuring of iron thin films by high flux low energy helium plasma." Thin Solid Films 631 (June 2017): 50–56. http://dx.doi.org/10.1016/j.tsf.2017.04.007.

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Bückins, Matthias, and Joachim Mayer. "Novel Applications of a Focused Ion Beam Workstation for Specimen Preparation and Nanostructuring." Practical Metallography 44, no. 5 (May 2007): 244–47. http://dx.doi.org/10.3139/147.100342.

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Journal articles on the topic 'Nanostructuring of metals'

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