Results 1 to 10 of about 2,230 (99)

Water vapor oxidation behavior of high-entropy (Ti,Nb,Ta,Hf,W)Cx at 1200 °C: the role of carbon vacancies [PDF]

RSC Advances
The oxidation behavior of (Ti,Nb,Ta,Hf,W)Cx in high-temperature water vapor was studied. The results indicate that the replacement of Zr with W enhances the oxidation resistance of high-entropy (Ti,Zr,Nb,Ta,Hf)C.
Wei Liao, Li Xu, Jiashan Xie, Xiaosong Zhou, Yongqiang Tan   +4 more
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Wetting and interfacial behavior of Fe, Co, Ni on (Ti, Zr, Hf, Nb, Ta)C high entropy ceramics

Open Ceramics, 2023
The wetting of (Ti, Zr, Hf, Nb, Ta)C) high entropy carbide ceramics by molten metals was studied using a sessile drop method in a vacuum environment. Fe, Co, and Ni demonstrate good wetting with the (Ti, Zr, Hf, Nb, Ta)C substrate forming a final contact
D. Vedel, M. Storozhenko, P. Mazur, V. Konoval, M. Skoryk, O. Grigoriev, M. Heaton, A. Zavdoveev   +7 more
doaj   +1 more source

Mechanism and kinetics of high-temperature oxidation of medium- and high-entropy carbides in air

Materials & Design, 2023
Medium- and high-entropy carbides (MECs and HECs) have a wide range of advanced applications and, in many cases, outperform monocarbides. However, the behavior, oxidation mechanisms, and factors defining oxidation resistance of some popular HECs at high ...
Sergey Yudin, Alexey Sedegov, Dmitry Moskovskikh, Sergey Volodko, Kirill Kuskov, Veronika Suvorova, Svetlana Danilova-Tretiak, Stepan Vorotilo, Andrey Nepapushev, Alexander Khort   +9 more
doaj   +1 more source

Effects of Transition Elements on the Structural, Elastic Properties and Relative Phase Stability of L1₂ γ′-Co₃Nb from First-Principles Calculations

Metals, 2021
In order to explore novel light-weight Co-Nb-based superalloys with excellent performance, we studied the effects of alloying elements including Sc, Ti, V, Cr, Mn, Fe, Ni, Y, Zr, Mo, Tc, Ru, Rh, Pd, Hf, Ta, W, Re, Os, Ir and Pt on the structural ...
Cuiping Wang, Chi Zhang, Yichun Wang, Jiajia Han, Weiwei Xu, Xingjun Liu   +5 more
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Structural changes in silicate melt: A record from high-field strength elements in the Himalayan Cenozoic leucogranites

Frontiers in Earth Science, 2023
Most Himalayan Cenozoic leucogranites are peraluminous magmas that have experienced various degrees of fractional crystallization. These leucogranites are characterized by relatively high degrees of heterogeneity in their elemental compositions.
Li-E. Gao, Lingsen Zeng, Lilong Yan, Linghao Zhao, Yaying Wang   +4 more
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Machine learning-driven synthesis of TiZrNbHfTaC5 high-entropy carbide

npj Computational Materials, 2023
Synthesis of high-entropy carbides (HEC) requires high temperatures that can be provided by electric arc plasma method. However, the formation temperature of a single-phase sample remains unknown.
Alexander Ya. Pak, Vadim Sotskov, Arina A. Gumovskaya, Yuliya Z. Vassilyeva, Zhanar S. Bolatova, Yulia A. Kvashnina, Gennady Ya. Mamontov, Alexander V. Shapeev, Alexander G. Kvashnin   +8 more
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Design and development of Ti–Zr–Hf–Nb–Ta–Mo high-entropy alloys for metallic biomaterials

Materials & Design, 2021
Applying empirical alloy parameters (including Mo equivalent), the predicted ground state diagram, and thermodynamic calculations, noble nonequiatomic Ti–Zr–Hf–Nb–Ta–Mo high-entropy alloys for metallic biomaterials (BioHEAs) were designed and newly ...
Yuuka Iijima, Takeshi Nagase, Aira Matsugaki, Pan Wang, Kei Ameyama, Takayoshi Nakano   +5 more
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Achieving ultra-broadband electromagnetic wave absorption in high-entropy transition metal carbides (HE TMCs)

Journal of Advanced Ceramics, 2022
Electronic devices pervade everyday life, which has triggered severe electromagnetic (EM) wave pollution. To face this challenge, developing EM wave absorbers with ultra-broadband absorption capacity is critically required.
Weiming Zhang, Huimin Xiang, Fu-Zhi Dai, Biao Zhao, Shijiang Wu, Yanchun Zhou   +5 more
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Theoretical Investigation of Effects of Transition Elements on Phase Stabilities and Elastic Properties of the γ′ Phase in Co–V–Ta Superalloys

Frontiers in Materials, 2022
In order to improve the thermal stability and mechanical properties of W-free light-weight Co–V–Ta-based superalloys, the effects of alloying elements including Sc, Ti, Cr, Mn, Fe, Ni, Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Hf, W, Re, Os, Ir, and Pt on γ′-Co3(V,
Youheng Chen, Cuiping Wang, Cuiping Wang, Chi Zhang, Chen Yang, Jiajia Han, Jiajia Han, Xingjun Liu, Xingjun Liu, Xingjun Liu   +9 more
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Properties of high entropy borides synthesized via microwave-induced plasma

APL Materials, 2022
Microwave-induced plasma was used to anneal precursor powders containing five metal oxides with carbon and boron carbide as reducing agents, resulting in high entropy boride ceramics.
Bria Storr, Luke Moore, Kallol Chakrabarty, Zaheeruddin Mohammed, Vijaya Rangari, Cheng-Chien Chen, Shane A. Catledge   +6 more
doaj   +1 more source