Results 11 to 20 of about 2,056 (126)

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
doaj   +1 more source

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
doaj   +1 more source

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
doaj   +1 more source

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
doaj   +1 more source

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
doaj   +1 more source

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

Computational property predictions of Ta–Nb–Hf–Zr high-entropy alloys

Scientific Reports, 2021
Refractory high entropy alloys (R-HEAs) are becoming prominent in recent years because of their properties and uses as high strength and high hardness materials for ambient and high temperature, aerospace and nuclear radiation tolerance applications ...
Shashank Mishra, Soumyadipta Maiti, Beena Rai   +2 more
doaj   +1 more source

Fabrication and Characterization of Quinary High Entropy-Ultra-High Temperature Diborides

Ceramics, 2021
Due to their inherent chemical complexity and their refractory nature, the obtainment of highly dense and single-phase high entropy (HE) diborides represents a very hard target to achieve.
Simone Barbarossa, Roberto Orrù, Valeria Cannillo, Antonio Iacomini, Sebastiano Garroni, Massimiliano Murgia, Giacomo Cao   +6 more
doaj   +1 more source

Unveiling the Transporting Mechanism of (Ti_0.2Zr_0.2Nb_0.2Hf_0.2Ta_0.2)C at Room Temperature

Crystals, 2023
High-entropy materials have been widely researched in recent years, and more work on their thermal and electrical properties is still needed. Herein, we fabricate a high-entropy carbide (Ti0.2Zr0.2Nb0.2Hf0.2Ta0.2)C ceramic and report the thermal and ...
Tao Liu, Liwen Lei, Jinyong Zhang, Neng Li   +3 more
doaj   +1 more source

Exploring alloying effect on phase stability and mechanical properties ofγ″-Ni3Nb precipitates with first-principles calculations

Materials & Design, 2020
The superior mechanical strength of Inconel 718 and similar Nb containing alloys mainly results from the ordered γ″-Ni3Nb precipitates. By employing first-principles calculations, we comprehensively investigate the effects of alloying elements (i.e., Sc,
Xiaoguo Gong, Wei-Wei Xu, Can Cui, Qiang Yu, Wei Wang, Tieqiang Gang, Lijie Chen   +6 more
doaj   +1 more source