Gotowe bibliografie tematyczne / High Entropy Alloy Coatings / Rozprawy doktorskie
Kliknij ten link, aby zobaczyć inne rodzaje publikacji na ten temat: High Entropy Alloy Coatings.

Rozprawy doktorskie na temat „High Entropy Alloy Coatings”

Autor: Grafiati
Data publikacji: 6 września 2023

Utwórz poprawne odniesienie w stylach APA, MLA, Chicago, Harvard i wielu innych

Wybierz rodzaj źródła:

Sprawdź 50 najlepszych rozpraw doktorskich naukowych na temat „High Entropy Alloy Coatings”.

Przycisk „Dodaj do bibliografii” jest dostępny obok każdej pracy w bibliografii. Użyj go – a my automatycznie utworzymy odniesienie bibliograficzne do wybranej pracy w stylu cytowania, którego potrzebujesz: APA, MLA, Harvard, Chicago, Vancouver itp.

Możesz również pobrać pełny tekst publikacji naukowej w formacie „.pdf” i przeczytać adnotację do pracy online, jeśli odpowiednie parametry są dostępne w metadanych.

Przeglądaj rozprawy doktorskie z różnych dziedzin i twórz odpowiednie bibliografie.

1

Aziz, Khan Naveed. "RF Magnetron Sputtered AlCoCrCu0.5FeNi High Entropy Alloy (HEA) and High Entropy Ceramic (HEC) Thin Films." Thesis, The University of Sydney, 2021. https://hdl.handle.net/2123/24615.

Pełny tekst źródła
Streszczenie:
High entropy-based materials in the form of thin films have been of growing interest recently for surface engineering applications due to their exceptional properties including high hardness, superior resistance to oxidation and corrosion, improved thermal stability, and high hydrophobicity. Sputter deposition of thin films comprised of several elements typically requires the use of targets containing multiple elements, making both the chemical composition and microstructure of the resulting films strongly dependent on the process parameters. Therefore, this thesis investigates the growth mech
Style APA, Harvard, Vancouver, ISO itp.
2

Löbel, Martin, Thomas Lindner, Thomas Mehner, and Thomas Lampke. "Microstructure and Wear Resistance of AlCoCrFeNiTi High-Entropy Alloy Coatings Produced by HVOF." Universitätsbibliothek Chemnitz, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-230210.

Pełny tekst źródła
Streszczenie:
The investigation of high-entropy alloys (HEAs) has revealed many promising properties. HEAs with a high share of Al and Ti are suitable for the formation of lightweight materials. Investigations of the alloy system AlCoCrFeNiTi showed high strength, hardness, ductility, and wear resistance, which makes this special alloy interesting for surface engineering and particularly for thermal spray technology. In this study, the suitability of inert gas-atomised HEA powder for high-velocity-oxygen-fuel (HVOF) thermal spray is investigated. This process allows for high particle velocities and comparat
Style APA, Harvard, Vancouver, ISO itp.
3

Belous, V. A., S. A. Firstov, V. F. Gorban, et al. "Properties of Coatings Deposited from Filtered Vacuum Arc Plasma with HEA Cathode." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35323.

Pełny tekst źródła
Streszczenie:
Ti-V-Zr-Nb-Hf metallic and nitride films were deposited by filtered vacuum arc plasma from a single equiatomic HEA cathode. The composition, microstructure, mechanical properties, thermal stability and corrosion properties were investigated. The deposited metallic film has a two-phase structure with bcc and hcp-lattice. The nitride films were found to have only an fcc structure. All coatings have nano-grained structures, with grain sizes 5 nm for metallic and 36 nm for nitride. The nitride coatings have a compressive stress of around – 12,5 GPa, high hardness ~ 40 GPa and elastic modulus
Style APA, Harvard, Vancouver, ISO itp.
4

Sobol, O. V., A. A. Andreev, and V. Gorban. "Structural-Strained State and Mechanical Characteristics of Single-Phase Vacuum-Arc Coatings of Multicomponent High Entropy System Ti-V-Zr-Nb-Hf and Nitrides Based On It." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/34808.

Pełny tekst źródła
Streszczenie:
In this work was shown the high stability of the single-phase structural state of high entropy alloy of Ti-V-Zr-Nb-Hf system in a vacuum-arc method of obtaining of coatings based on it. In the process of deposition single-phase high entropy coatings with bcc-lattice which characterizes the cast state are formed in vacuum, and upon obtaining in a nitrogen atmosphere single-phase nitride superhard coatings based on fcc-metal lattice are formed. Such a stability of structure of multi-element alloy to high temperature evaporation and deposition from high-energy plasma flows allows to use the
Style APA, Harvard, Vancouver, ISO itp.
5

Steneteg, Jakob. "Corrosion Resistant Multi-Component Coatings for Hydrogen Fuel Cells." Thesis, Linköpings universitet, Tunnfilmsfysik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-174617.

Pełny tekst źródła
Streszczenie:
Multi-component coatings and high entropy alloys have in recent years attracted great interest for research, since they have shown to exhibit properties greater than the com- ponents of their parts. Today’s climate challenges requires transitioning from fossil fuels to renewable energy sources which demands use of new technology and new innovations. The hydrogen fuel cell is a technology which produces no carbon emissions, and the drive for innovation has led researchers to apply multi-component (high entropy alloys) coatings to invent the next generation hydrogen fuel cells and help the trans
Style APA, Harvard, Vancouver, ISO itp.
6

Тевосян, А. А. "Боридні покриття на основі високоентропійних сплавів". Master's thesis, Сумський державний університет, 2019. http://essuir.sumdu.edu.ua/handle/123456789/73025.

Pełny tekst źródła
Streszczenie:
Об’єкт дослідження – боридні покриття на основі високоентропійних сплавів та фізико-хімічні процеси, що обумовлюють формування та зміну фазового складу, структури і функціональних властивостей покриттів.
Style APA, Harvard, Vancouver, ISO itp.
7

Ляшко, В. О. "Карбідні покриття на основі високоентропійних сплавів". Master's thesis, Сумський державний університет, 2019. http://essuir.sumdu.edu.ua/handle/123456789/73026.

Pełny tekst źródła
Streszczenie:
В роботі досліджені карбідні покриття на основі високоентропійних сплавів та фізико-хімічні процеси, що обумовлюють формування та зміну фазового складу, структури і функціональних властивостей покриттів.
Style APA, Harvard, Vancouver, ISO itp.
8

Huser, Gautier. "Etude et sélection d’alliages à composition complexe sans cobalt à finalité tribologique." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPAST051.

Pełny tekst źródła
Streszczenie:
Il est nécessaire de développer des revêtements sans cobalt possédant une bonne résistance à l’usure afin de remplacer les alliages de type stellite® qui sont utilisés dans les centrales nucléaires. En effet, les débris de cet alliage sont activés sous flux neutronique et forme du 60Co, un isotope radioactif susceptible de contaminer le reste de l’installation. Les matériaux sans cobalt, base nickel ou base fer, proposés pour le moment ne présentent pas des propriétés tribologiques concurrentes à celles du stellite®. Les AHE (Alliage à Haute Entropie) et ACC (Alliage à Composition Complexe) pe
Style APA, Harvard, Vancouver, ISO itp.
9

Сухонос, Я. В. "Мікроструктура та фізико-механічні властивості боридних багатокомпонентних покриттів". Master's thesis, Сумський державний університет, 2019. http://essuir.sumdu.edu.ua/handle/123456789/76755.

Pełny tekst źródła
Streszczenie:
В роботі представлено результати дослідження мікроструктури та фізико-механічних властивостей багатокомпонентних боридних покриттів на основі високоентропійних сплавів, які отримані різними методами осадження. Проаналізовані результати вивчення структурно-фазового стану і властивостей покриттів залежно від експериментальних умов і параметрів нанесення покриттів. Дослідження в роботі великої кількості покриттів ( залежно від тиску робочого газу та потенціалу зсуву підкладки) дозволило встановити закономірності формування структурного стану таких покриттів, виявити кореляцію між фазовим складом
Style APA, Harvard, Vancouver, ISO itp.
10

Kushnerov, O. I. "MD simulation of AlCoCuFeNi high-entropy alloy nanoparticle." Thesis, Sumy State University, 2016. http://essuir.sumdu.edu.ua/handle/123456789/45791.

Pełny tekst źródła
Streszczenie:
High entropy alloys (HEA) are metallic compounds containing from 5 to 13 metallic elements in equiatomic ratios. In HEAs, because of the high mixing entropy, formation of brittle intermetallic phases is usually avoided and simple solid solutions are rather stabilized (BCC and/or FCC). This study used molecular dynamics (MD) package LAMMPS to simulate the AlCoCuFeNi nanoparticle (NP) crystallization.
Style APA, Harvard, Vancouver, ISO itp.
11

Погребняк, Олександр Дмитрович, Александр Дмитриевич Погребняк, Oleksandr Dmytrovych Pohrebniak, et al. "Structure and Morphology of Nitride Coating (TiHfZrVNb)N After Thermal Annealing 600˚C." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35400.

Pełny tekst źródła
Streszczenie:
This study reports the influence of thermal annealing 600 °C on the characteristics of the (Ti- HfZrVNb)N coatings prepared by vacuum arc melting at different deposition conditions. The crystal structures, surface’s morphology were characterized by X-ray diffraction and atomic force microscopy. The results indicate that nitride coatings based on high-entropy alloy TiHfZrVNb have fcc crystal structure. It is shown that the nitride coatings (TiHfZrVNb)N have a good resistance to oxidation during thermal annealing 600 °C. When you are citing the document, use the following link http://essuir
Style APA, Harvard, Vancouver, ISO itp.
12

Nordin, Norhuda Hidayah. "Phase transformation in High Entropy Bulk Metallic Glass (HE-BMG) and Lamellar Structured-High Entropy Alloy (HEA)." Thesis, University of Sheffield, 2018. http://etheses.whiterose.ac.uk/21325/.

Pełny tekst źródła
Streszczenie:
An investigation into the phase transformation of metastable alloys such as high entropy alloys (HEAs) and high entropy bulk metallic glasses (HE-BMGs) was performed. Bulk metallic glasses (BMGs) and HEAs were known to have a metastable phase at high temperature, while HEAs was reported to have a sluggish diffusion at high temperature. Besides, the drawback of many single phase HEAs is that they are mechanically unstable due to the presence of single phase either body centred cubic (BCC) or face centred cubic (FCC) structures. Here, a systematic study on the crystal structure, physical and mec
Style APA, Harvard, Vancouver, ISO itp.
13

Löbel, Martin, Thomas Lindner, Robert Pippig, and Thomas Lampke. "High-Temperature Wear Behaviour of Spark Plasma Sintered AlCoCrFeNiTi0.5 High-Entropy Alloy." MDPI, 2019. https://monarch.qucosa.de/id/qucosa%3A34386.

Pełny tekst źródła
Streszczenie:
In this study, the wear behaviour of a powder metallurgically produced AlCoCrFeNiTi0.5 high-entropy alloy (HEAs) is investigated at elevated temperatures. Spark plasma sintering (SPS) of inert gas atomised feedstock enables the production of dense bulk material. The microstructure evolution and phase formation are analysed. The high cooling rate in the atomisation process results in spherical powder with a microstructure comprising two finely distributed body-centred cubic phases. An additional phase with a complex crystal structure precipitates during SPS processing, while no coarsening of mi
Style APA, Harvard, Vancouver, ISO itp.
14

Ye, Jingrui. "Fabrication and Microscopic Characterization of AlCoCrCu0.5FeNi High Entropy Alloy Thin Films." Thesis, The University of Sydney, 2021. https://hdl.handle.net/2123/25793.

Pełny tekst źródła
Streszczenie:
The high entropy alloy (HEA) was first discovered and reported in 2004. It was also called multi-principal element alloys (MPEAs). Generally, it is consisted of at least five elements in equimolar or near equimolar ratios, and the concentration of each element is varied in between 5% and 35%. HEAs have many useful properties like thermal stability, excellent mechanical properties and high corrosion resistance which can all be applied in practice for various applications, such as high temperature, heat resistant coatings and diffusion barriers. They can also be used as the raw materials for s
Style APA, Harvard, Vancouver, ISO itp.
15

Gwalani, Bharat. "Developing Precipitation Hardenable High Entropy Alloys." Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc1011755/.

Pełny tekst źródła
Streszczenie:
High entropy alloys (HEAs) is a concept wherein alloys are constructed with five or more elements mixed in equal proportions; these are also known as multi-principle elements (MPEs) or complex concentrated alloys (CCAs). This PhD thesis dissertation presents research conducted to develop precipitation-hardenable high entropy alloys using a much-studied fcc-based equi-atomic quaternary alloy (CoCrFeNi). Minor additions of aluminium make the alloy amenable for precipitating ordered intermetallic phases in an fcc matrix. Aluminum also affects grain growth kinetics and Hall-Petch hardenability.
Style APA, Harvard, Vancouver, ISO itp.
16

Liu, Kaimiao. "Linking Enhanced Fatigue Life to Design by Modifying the Microstructure." Thesis, University of North Texas, 2019. https://digital.library.unt.edu/ark:/67531/metadc1538654/.

Pełny tekst źródła
Streszczenie:
Structural material fatigue is a leading cause of failure and has motivated fatigue-resistant design to eliminate risks to human lives. Intrinsic microstructural features alter fatigue deformation mechanisms so profoundly that, essentially, fatigue properties of structural materials become deviant. With this in mind, we initiated this project to investigate the microstructural effect on fatigue behavior of potential structural high entropy alloys. With a better understanding of the effect of microstructure features on fatigue properties, the ultimate goal was to engineer the microstructure to
Style APA, Harvard, Vancouver, ISO itp.
17

Löbel, Martin, Thomas Lindner, and Thomas Lampke. "Enhanced Wear Behaviour of Spark Plasma Sintered AlCoCrFeNiTi High-Entropy Alloy Composites." MDPI AG, 2018. https://monarch.qucosa.de/id/qucosa%3A32461.

Pełny tekst źródła
Streszczenie:
High hardness and good wear resistance have been revealed for the high-entropy alloy (HEA) system AlCoCrFeNiTi, confirming the potential for surface protection applications. Detailed studies to investigate the microstructure and phase formation have been carried out using different production routes. Powder metallurgical technologies allow for much higher flexibility in the customisation of materials compared to casting processes. Particularly, spark plasma sintering (SPS) enables the fast processing of the feedstock, the suppression of grain coarsening and the production of samples with a low
Style APA, Harvard, Vancouver, ISO itp.
18

Hasan, Md Nazmul. "Microstructure and mechanical properties of a CrMnFeCoNi high-entropy alloy with gradient structures." Thesis, University of Sydney, 2020. https://hdl.handle.net/2123/23036.

Pełny tekst źródła
Streszczenie:
High-entropy alloys (HEAs) that demonstrate excellent mechanical properties over steel-based alloys are not exempt from the common dilemma of strength–ductility trade-off, which limits their potential applications. One way to improve the property of CrMnFeCoNi HEA is by using the rotationally accelerated shot peening technique to introduce a gradient structure. Two gradient profiles—a thin gradient layer with an undeformed core and a fully deformed structure—are introduced by adjusting the processing parameters. The effects of these gradient profiles on mechanical properties and microstructura
Style APA, Harvard, Vancouver, ISO itp.
19

Liu, Zhijie. "Application of a pulsed cathodic arc for deposition of high entropy alloy thin films." Thesis, The University of Sydney, 2021. https://hdl.handle.net/2123/27518.

Pełny tekst źródła
Streszczenie:
High entropy alloys (HEAs) were highly valued because of their unique and desirable properties. A HEA is defined as having at least five elements in equimolar or near equimolar ratios, and the concentration of each element is between 5% and 35%. HEAs have many desired properties, such as excellent hardness, thermal stability, high electrical and oxidation resistance, and excellent mechanical properties. These advantages grant HEAs to overcome the conventional alloys and be applied in various fields like tools with excellent hardness, high temperature and durable characteristics, magnetic films
Style APA, Harvard, Vancouver, ISO itp.
20

Akbari, Azin. "COMBINATORIAL SCREENING APPROACH IN DEVELOPING NON-EQUIATOMIC HIGH ENTROPY ALLOYS." UKnowledge, 2018. https://uknowledge.uky.edu/cme_etds/87.

Pełny tekst źródła
Streszczenie:
High entropy alloys (HEA) are a relatively new group of alloys first introduced in 2004. They usually contain 5 to 6 different principle elements. Each of these elements comprise 5-35 at. % of the chemical composition of the alloy. There is a growing interest in the research community about the development of these alloys as well as their engineering applications. Some HEAs have interesting properties that have made them well suited for higher temperature applications, particularly refractory uses, while some have been shown to maintain their mechanical properties even at cryogenic temperature
Style APA, Harvard, Vancouver, ISO itp.
21

Edris, Hossein. "Studies on high velocity oxy-fuel sprayed coatings of iconel 625 and Ni-Cr←3C←2." Thesis, University of Nottingham, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.362891.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
22

Martin, Alexander Charles. "Initial Weldability of High Entropy Alloys for High Temperature Applications." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1555496040477991.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
23

Jensen, Jacob K. "Characterization of a High Strength, Refractory High Entropy Alloy, AlMo0.5NbTa0.5TiZr." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1492175560975813.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
24

Löbel, Martin, Thomas Lindner, Thomas Mehner, and Thomas Lampke. "Influence of Titanium on Microstructure, Phase Formation and Wear Behaviour of AlCoCrFeNiTix High-Entropy Alloy." Technische Universität Chemnitz, 2018. https://monarch.qucosa.de/id/qucosa%3A23475.

Pełny tekst źródła
Streszczenie:
The novel alloying concept of high-entropy alloys (HEAs) has been the focus of many recent investigations revealing an interesting combination of properties. Alloying with aluminium and titanium showed strong influence on microstructure and phase composition. However, detailed investigations on the influence of titanium are lacking. In this study, the influence of titanium in the alloy system AlCoCrFeNiTix was studied in a wide range (molar ratios x = 0.0; 0.2; 0.5; 0.8; 1.0; 1.5). Detailed studies investigating the microstructure, chemical composition, phase composition, solidification behavi
Style APA, Harvard, Vancouver, ISO itp.
25

Lindner, Thomas, Martin Löbel, Thomas Mehner, Dagmar Dietrich та Thomas Lampke. "The Phase composition and microstructure of AlχCoCrFeNiTi alloys for the development of high-entropy alloy systems". Universitätsbibliothek Chemnitz, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-226527.

Pełny tekst źródła
Streszczenie:
Alloying aluminum offers the possibility of creating low-density high-entropy alloys (HEAs). Several studies that focus on the system AlCoCrFeNiTi differ in their phase determination. The effect of aluminum on the phase composition and microstructure of the compositionally complex alloy (CCA) system AlxCoCrFeNiTi was studied with variation in aluminum content (molar ratios x = 0.2, 0.8, and 1.5). The chemical composition and elemental segregation was measured for the different domains in the microstructure. The crystal structure was determined using X-ray diffraction (XRD) analysis. To identif
Style APA, Harvard, Vancouver, ISO itp.
26

Hendrick, Michelle Renee. "The effects of combustion CVD-applied alumina coatings on the high temperature oxidation of a Ni-Cr alloy." Thesis, Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/19635.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
27

RAJESHWAR, REDDY ELETI. "Deformation Mechanisms and Microstructure Evolution in HfNbTaTiZr High Entropy Alloy during Thermo-mechanical Processing at Elevated Temperatures." Doctoral thesis, Kyoto University, 2019. http://hdl.handle.net/2433/242505.

Pełny tekst źródła
Streszczenie:
京都大学<br>0048<br>新制・課程博士<br>博士(工学)<br>甲第21767号<br>工博第4584号<br>新制||工||1714(附属図書館)<br>京都大学大学院工学研究科材料工学専攻<br>(主査)教授 辻 伸泰, 教授 乾 晴行, 教授 安田 秀幸<br>学位規則第4条第1項該当<br>Doctor of Philosophy (Engineering)<br>Kyoto University<br>DFAM
Style APA, Harvard, Vancouver, ISO itp.
28

Wang, Hao. "In-situ transmission electron microscopy investigation of deformation-induced microstructural evolution of a FeCoCrNiMn high-entropy alloy." Thesis, The University of Sydney, 2018. http://hdl.handle.net/2123/20068.

Pełny tekst źródła
Streszczenie:
High-entropy alloys (HEAs) are alloys with multiple (usually ≥5) principal elements. HEAs are attracting increasing interest because of their promising mechanical properties and phase stability, which can be used for various applications, such as high-speed cutting tools, anticorrosive high-strength parts in chemical plants and deep-sea exploration due to the excellent mechanical properties at cryogenic temperatures. Thorough understanding of the structural evolution during deformation of HEAs is a prerequisite for understanding and further improving their superior mechanical properties, which
Style APA, Harvard, Vancouver, ISO itp.
29

Anguo, Wang. "The effect of grain size on the low-cycle fatigue behaviours of a CrMnFeCoNi high entropy alloy." Thesis, The University of Sydney, 2019. http://hdl.handle.net/2123/21129.

Pełny tekst źródła
Streszczenie:
High-entropy alloys (HEAs) alloys are alloys formed by at 5 or more elements, which have high strength, excellent ductility, and wear, corrosion and creep resistance. While the above-mentioned properties are very important and widely studied, fatigue properties are a more critical issue in most industrial applications. Fatigue causes over 90% of failure. Yet, the fatigue properties of HEAs have been less investigated. So, it worth to study the fatigue properties. It has been well-known that grain size plays a critical role in determining the mechanical properties of HEAs. However, the grain si
Style APA, Harvard, Vancouver, ISO itp.
30

Ayyagari, Venkata A. "Surface Degradation Behavior of Bulk Metallic Glasses and High Entropy Alloys." Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc1062863/.

Pełny tekst źródła
Streszczenie:
In this study, the surface degradation behavior was studied for typical examples from bulk metallic glasses (BMGs), metallic glass composites (MGCs) and high entropy alloys (HEAs) alloy systems that are of scientific and commercial interest. The corrosion and wear behavior of two Zr-based bulk metallic glasses, Zr41.2Cu12.5Ni10Ti13.8Be22.5 and Zr57Cu15.4Ni12.6Al10Nb5, were evaluated in as-cast and thermally relaxed states. Significant improvement in corrosion rate, wear behavior, and friction coefficient was seen for both the alloys after thermal relaxation. Fully amorphous structure was retai
Style APA, Harvard, Vancouver, ISO itp.
31

Kushnerov, O. I., and V. F. Bashev. "Structure and mechanical properties of Al-Co-Cr-Fe-Mn-Ni-Si-V high-entropy films obtained by splat-quenching." Thesis, Sumy State University, 2015. http://essuir.sumdu.edu.ua/handle/123456789/42650.

Pełny tekst źródła
Streszczenie:
The multicomponent films of Al-Co-Cr-Fe-Mn-Ni-Si-V high-entropy alloys obtained by splat-quenching from melt were investigated. Phase formation criteria for high-entropy alloys were considered. The films have a structure with body-centered cubic lattice. The value of lattice parameters of the investigated alloys suggests that the solid solutions are form on the base of Cr lattice, in view of its higher melting temperature. The positive influence of microstrains level and dislocation density on the microhardness values of splat-quenched high-entropy alloys has been established. Improved mechan
Style APA, Harvard, Vancouver, ISO itp.
32

Kuprin, A. S., O. M. Morozov, V. A. Belous, et al. "Effects of Deuterium Implantation Dose on Hardness and Deuterium Desorption Temperature Range from High Entropy TiVZrNbHf and TiVZrNbHfN Coatings." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35363.

Pełny tekst źródła
Streszczenie:
High entropy TiVZrNbHf and TiVZrNbHfN coatings prepared by filtered vacuum arc plasma from a single equiatomic HEA cathode. Similarly were obtained titanium and titanium nitride coatings. The structure of coatings was investigated by X-ray analysis and the changes in nanohardness by nanoindentation method. The effusion of the implanted deuterium was studied by thermal desorption spectroscopy (TDS). It is shown that the structure of effusion spectrum is a function of deuterium dose. With increasing implantation dose deuterium desorption temperature range from coatings is expanding in the d
Style APA, Harvard, Vancouver, ISO itp.
33

Huang, Ping-Kang, and 黃炳剛. "On High-Entropy Alloy and Nitride Coatings Sputtered from AlCrNbSiTiV Target." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/45557558479597094755.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
34

Lin, Shao-Yi, and 林少顗. "Nanomechanical Properties and Deformation Behavior of Multi-component High-entropy Alloy and Nitride Coatings." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/38066806767302667335.

Pełny tekst źródła
Streszczenie:
博士<br>國立中興大學<br>材料科學與工程學系所<br>104<br>Our study could divide into three sections. First, we studied about (AlCrTaTiZr)Nx multi-component coatings. They were developed as protective hard coatings for tribological application. The mechanical properties, creep behaviors, deformation mechanisms and interface adhesion of the (AlCrTaTiZr)Nx coatings with different N contents were characterized. With increasing the N2-to-total flow ratio, RN, during sputtering deposition, the (AlCrTaTiZr)Nx coatings transformed from an amorphous metallic phase to a nanocomposite and finally a crystalline nitride stru
Style APA, Harvard, Vancouver, ISO itp.
35

Alvi, Sajid. "Synthesis and Characterization of High Entropy Alloy and Coating." Licentiate thesis, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-73882.

Pełny tekst źródła
Streszczenie:
High entropy alloys (HEAs) are a new class of alloys that contains five or more principal elements in equiatomic or near-equiatomic proportional ratio. The configuration entropy in the HEAs tends to stabilize the solid solution formation, such as body-centered-cubic (BCC), face-centered-cubic (FCC) and/or hexagonal-closed-pack (HCP) solid solution. The high number of principal elements present in HEAs results in severe lattice distortion, which in return gives superior mechanical properties compared to the conventional alloys. HEAs are considered as a paradigm shift for the next generation hig
Style APA, Harvard, Vancouver, ISO itp.
36

陳家裕. "Development of multicomponent high-entropy alloys for thermal spray coating." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/47099338451611909570.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
37

Huang, Ping-Kang, and 黃炳剛. "Research of multi-component high -entropy alloys for thermalspray coating." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/32057932770890578348.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
38

Luo, Jin-Tai, and 羅錦泰. "Development of oxidation-resistant coating for refractory high-entropy alloys." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/jcef2n.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
39

Lu, Che-Wei, and 呂哲維. "Electrochemical properties of CoCrFeMnNi high entropy alloy- a comparison with Fe5Mn3CoCr medium entropy alloy." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/6z56du.

Pełny tekst źródła
Streszczenie:
碩士<br>國立臺灣大學<br>材料科學與工程學研究所<br>106<br>In recent years, Fe5Mn3CoCr medium entropy alloy (MEA) has been reported as an alloy system which shows transformation-induced plasticity effect during deformation. The excellent strength and ductility combination of this alloy is even better than CoCrFeMnNi high entropy alloy (HEA), but the corrosion behavior is still unknown. In this study, the corrosion behavior of CoCrFeMnNi HEA and Fe5Mn3CoCr MEA were investigated. The environments chose for the cyclic polarization measurement were 3.5wt% NaCl solution with different pH values (pH=3, 6, 9, 12) and tem
Style APA, Harvard, Vancouver, ISO itp.
40

Kao, Yih-Farn, and 高逸帆. "High-entropy alloy mediated growth of graphene." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/55042565088569128165.

Pełny tekst źródła
Streszczenie:
博士<br>國立清華大學<br>材料科學工程學系<br>102<br>Pyrolysis of acetylene over thin films made of CuxFeCoNiMn yields graphene and sheet dimension is found to control by x. Monolayer structure forms at x = 0.5 and sheet size reaches a value as large as 600 m2. Layer number increases as x rises and turbostratic graphite forms at x = 1.5. The x-controlled growth mechanism involves five consecutive steps and each is supported by experimental data.
Style APA, Harvard, Vancouver, ISO itp.
41

Tsao, Te Kang, and 曹德綱. "Alloy Design Cast High Entropy Superalloys for High Temperature Applications." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/7277mt.

Pełny tekst źródła
Streszczenie:
博士<br>國立清華大學<br>材料科學工程學系<br>105<br>In this study, high entropy alloys have been developed toward high temperature applications. According to the most widely used high temperature material superalloys, the microstructure of face-centered cubic (FCC) γ matrix with uniformly distributed L12 γ′ precipitates implies the more balanced high temperature strength and ductility. So, the thermal stability and strength of highly alloyed Ni3Al were studied initially. The strengthening effect on developing a γ′ composition toward higher entropy is significant, due to higher anti-phase boundary energy of the
Style APA, Harvard, Vancouver, ISO itp.
42

Huang, Wen-Wei, and 黃文威. "Effect of Al0.5CoCrFeNi2 high entropy alloy particle on strength of AZ91 alloy." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/48e979.

Pełny tekst źródła
Streszczenie:
碩士<br>國立臺灣科技大學<br>機械工程系<br>107<br>In this study, 10 wt. % of Al0.5CoCrFeNi2 high entropy powder with the size of 10 μm and 90 μm were added to AZ91 alloy by powder metallurgy. According to the result of hardness and compression strength, particle size of 10 μm was the best candidate. Magnesium-based composites were then fabricated with four different addition amount (5 wt. %, 10 wt. %, 15 wt. %, 30 wt. %) to study the effect. The analysis was then carried out using SEM, XRD, MTS dynamic testing and Vickers hardness. The experimental results showed that the phase composition of magnesium-based
Style APA, Harvard, Vancouver, ISO itp.
43

Chen, Yi-Hung, and 陳翊閎. "Structural Transition in High Entropy Alloy CoCrFeMnNi Subjected to High Pressure." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/s3mbgv.

Pełny tekst źródła
Streszczenie:
碩士<br>國立交通大學<br>材料科學與工程學系所<br>105<br>An equal-molar CoCrFeMnNi high-entropy alloy has the cubic crystal system of face-centered-cubic (FCC) at room temperature and atmospheric pressure. The recent research believed that the high-entropy has the property of low stacking fault energy, and excellent mechanic property because of the structure of nanocrystalline in low temperature. However, there was no phase-changing observed. This research used Angular-dispersive X-ray Diffraction (ADXRD) under high-pressure, pressurized the CoCrFeMnNi high-entropy alloy system to 20GPa. After analyzing diffracti
Style APA, Harvard, Vancouver, ISO itp.
44

Yang, Chien-chang, and 楊健章. "Environments Corrosion Behavior of FeCoNiCrAl0.5 Bulky High Entropy Alloy." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/16631098985979736826.

Pełny tekst źródła
Streszczenie:
碩士<br>國立臺灣科技大學<br>機械工程系<br>97<br>The corrosion behavior of FeCoNiCrAl0.5 bulky high entropy alloy was studied. The homogenization treatment of the as-cast alloy specimen was processed. After water quenching serial heat-treatment processes were carried out. The corrosion properties, mechanical properties and microstructures of the specimens had been evaluated after the immersion tests with the NaCl, NaOH and H2SO4 solutions, respectively. The alloy has higher corrosion rate in 3.5 wt% NaCl aqueous solutions due to significant segregation of Cr-riched phase. Because of the active sensitivity zon
Style APA, Harvard, Vancouver, ISO itp.
45

Lin, Szu Yen, and 林思延. "Electrochemical Corrosion Properties of the High Entropy Alloy ( Al5Cr12Fe35Mn28Ni20 )." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/73102611505623444288.

Pełny tekst źródła
Streszczenie:
碩士<br>中國文化大學<br>材料科學與奈米科技研究所<br>99<br>This research aims to explore the corrosion behavior and electrochemical properties of the high entropy alloy (HEA) AlCrFeMnNi ，to see whether increasing the amount of cold work (0% ，30% and 60%) would increase the pitting corrosion resistance ，and to achieve the critical pitting temperature (CPT) of the alloy in a specific aqueous environment containing chloride (Cl-) or fluoride (F-) through increasing the bath temperature (20-90℃). Experiments were conducted separately in sulfuric acid sodium chloride，ammonium chloride and sodium fluoride solutions and
Style APA, Harvard, Vancouver, ISO itp.
46

Peng, Bo-Sen, and 彭柏森. "Alloy design and mechanical properties study of titanium-rich light-weight high-entropy alloy." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/x6z675.

Pełny tekst źródła
Streszczenie:
碩士<br>國立中央大學<br>材料科學與工程研究所<br>107<br>High-entropy alloys (HEA) attract great attention in past few decades. Most HEA researches mainly concentrate on the heavier multi-principal elements with equiatomic or near-equiatomic alloys. In this study, we focus on the light-weight and non-equiatomic medium-entropy alloys (MEA) system with low density (below 5g/cm3). Series of non-equiatomic quaternary alloy system, Ti-Al-Cr-Nb、Ti-Al-Cr-V were firstly designed by using calculating parameter (∆S、∆H、δr), then further modified into quinary Ti-Al-Cr-Nb-V alloy system. All samples were prepared by vacuum ar
Style APA, Harvard, Vancouver, ISO itp.
47

Chen, Hong-Siang, and 陳泓翔. "Microstructure and characterisation of high entropy alloy (TiVCrZrNbMoHfTaWAlSi) Nitride film." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/qzq779.

Pełny tekst źródła
Streszczenie:
碩士<br>國立勤益科技大學<br>機械工程系<br>105<br>In this study, a high-entropy alloy nitride film was prepared by a DC sputtering machine. A nitride film was deposited on a silicon wafer and quartz glass (SiO2) without applying a substrate bias. The working pressure was 4x10-3 Torr and the sputtering was fixed at 300W The temperature and temperature of the substrate were fixed at 300 ° C, and the film composition and microstructure were controlled by adjusting the nitrogen and argon flow rate (RN) in the vacuum. The film thickness was 1000 nm ± 50 nm, , Scanning electron microscopy, visible spectrophotometer
Style APA, Harvard, Vancouver, ISO itp.
48

Fang, Shuang, and 方雙. "Microstructures and Mechanical Properties of CoCrFeMnNiVx High Entropy Alloy Films." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/hbe4ev.

Pełny tekst źródła
Streszczenie:
碩士<br>國立臺灣大學<br>材料科學與工程學研究所<br>107<br>In the present work, CoCrFeMnNiVx (x = 0, 0.07, 0.3, 0.7, 1.1) high entropy alloy films were fabricated by magnetron co-sputtering. For low contents of V, typical face-centered cubic (fcc) peaks were identified in X-ray diffraction patterns. With the increasing V content, the diffraction peaks became broadening and the formation of amorphous phase was promoted. TEM observations showed abundant nanotwins in films with low V contents and the transition from fcc to amorphous structure with the increasing V content. The 3D APT reconstruction results revealed n
Style APA, Harvard, Vancouver, ISO itp.
49

Tsai, Chih-Fang, and 蔡致芳. "High-Entropy Alloy Nanoparticles as Electrocatalysts for Direct Methanol Fuel Cells." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/50943003627171622233.

Pełny tekst źródła
Streszczenie:
碩士<br>國立交通大學<br>材料科學與工程系所<br>95<br>In this study, fabrication and electrochemical characterization of high-entropy electrocatalyst on noncatalyzed gas diffusion electrode by RF sputter deposition was reported. XRD analysis of the as-deposited film exhibited a crystalline FCC phase while EDS confirmed its composition as Pt52Fe10Co9Ni9Cu12Ag8. SEM images revealed nanoparticles nodules growing on the carbon particles. Cyclic voltammetry (CV) was used to analyze its performance as anode electrocatalyst for direct methanol fuel cell. The area under CV curve was proportional to the amount of electro
Style APA, Harvard, Vancouver, ISO itp.
50

Chen, Huang-Jen, and 陳皇仁. "A study of phase transformations in an Al0.5CoCrFeNi2 high entropy alloy." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/13260718801691617600.

Pełny tekst źródła
Streszczenie:
碩士<br>國立臺灣科技大學<br>材料科技研究所<br>93<br>We have studied the microstructures of the constituent phases of a Al0.5CoCrFeNi2 multi-component alloy in two conditions which one was in the as-cast condition and the other wais in hot forged, cold rolled, annealed at 1050℃, then heat treatment at lower temperatures. For the alloy in the as-cast condition, the dendrites appeared in the OM observation, and only FCC peaks were observed from the XRD analysis; however, L12 phase was the major phase confirmed by the TEM study. The L12 phase was the derivative phase from the FCC parent phase. The mechanism for th
Style APA, Harvard, Vancouver, ISO itp.
Oferujemy zniżki na wszystkie plany premium dla autorów, których prace zostały uwzględnione w tematycznych zestawieniach literatury. Skontaktuj się z nami, aby uzyskać unikalny kod promocyjny!

Do bibliografii