Results 21 to 30 of about 2,066 (185)

Comparative Study of Preparation and Electrochemical Properties of Nb₄C₃T_x (T = –OH, –F, or =O) and (Nb_0.8Ti_0.05V_0.05Zr_0.05Ta_0.05)₄C₃T_x (T = –OH, –F, or =O) MXenes

Metals, 2023
Two–dimensional MXene synthesized from MAX phase ceramic has good electrical conductivity, promising to be used as electrodes. In this study, Nb4C3Tx (T = –OH, –F, or =O) MXene and low–entropy (Nb0.8Ti0.05V0.05Zr0.05Ta0.05)4C3Tx (T = –OH, –F, or =O ...
Ming Fu, Hongyu Chen, Juan Cheng, Longsheng Chu, Qingguo Feng, Chunfeng Hu   +5 more
doaj   +1 more source

Anisotropic thermoelectric properties in layered complex nitrides with α-NaFeO2-type structure

APL Materials, 2016
Electronic structures and thermoelectric transport properties of α-NaFeO2-type d0-electron layered complex nitrides AMN2 (A = Sr or Na; M = Zr, Hf, Nb, Ta) were evaluated using density-functional theory and Boltzmann theory calculations.
Isao Ohkubo, Takao Mori
doaj   +1 more source

GEOCHEMICAL FEATURES OF DIKE AILLIKITES AND ALKALINE ROCKS OF THE BOLSHETAGNINSKY MASSIF (URIK-IYA GRABEN, EAST SAYAN REGION)

Геодинамика и тектонофизика, 2022
The ICP-MS determinations have been made on microelement content of ~650–640 Ma ultramafic lamprophyre-aillikite dikes and alkaline silicate rocks and carbonatites from the Bolshetagninsky ijolite-syenite massif, spatially overlapped in the northern Urik-
V. B. Savelieva, E. P. Bazarova, Yu. V. Danilova, B. S. Danilov   +3 more
doaj   +1 more source

Caracterização da liga de alta entropia CrMnFeCoNi obtida através de moagem mecânica de alta energia [PDF]

, 2023
High Entropy (LAE) alloys are metallic materials that are standing out in recent years, due to the obtaining of a material with important properties, such as high hardness, corrosion resistance, wear, thermal stability and fatigue resistance, enabling ...
Souza, Fernando Oliveira do Nascimento
core  

Pt-induced atomic-level tailoring towards paracrystalline high-entropy alloy

Nature Communications, 2023
Paracrystalline state is still challenging to reach in alloy systems in a controlled manner. Here, the authors present an atomic-level tailoring route to create paracrystalline Zr-Nb-Hf-Ta-Mo high-entropy alloy through local amorphization induced by ...
Xingjia He, Yu Zhang, Xinlei Gu, Jiangwei Wang, Jinlei Qi, Jun Hao, Longpeng Wang, Hao Huang, Mao Wen, Kan Zhang, Weitao Zheng   +10 more
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Cостав источников Кинкильского комплекса Западной Камчатки по изотопно-геохимическим данным [PDF]

, 2019
Изучен изотопно-геохимический состав эоценовых вулканитов кинкильского комплекса Западной Камчатки. Особенности распределения высокозарядных и тяжелых редкоземельных элементов и их отношения, изотопный состав Sr, Nd и Pb предполагают формирование ...
Дриль С.И., Коваленко Д.В., Перепелов А.Б., Федоров П.И.   +3 more
core   +1 more source

Thermal Stability of Microstructure of High-Entropy Alloys Based on Refractory Metals Hf, Nb, Ta, Ti, V, and Zr

Metals, 2022
In the present work, a series of high-entropy alloys based on refractory metals Hf, Nb, Ta, Ti, V, and Zr with various compositions have been systematically investigated.
Tomáš Vlasák, Jakub Čížek, Oksana Melikhova, František Lukáč, Dalibor Preisler, Miloš Janeček, Petr Harcuba, Mariia Zimina, Ondřej Srba   +8 more
doaj   +1 more source

Mechanical and electronic properties of new stable transition metal carbonitrides

Results in Physics, 2023
Using first-principles calculations, we conducted a comprehensive investigation into the crystal structures, mechanical properties, and electronic structures of Ta4CN3 and Ta2CN compounds through the substitution of Ta atoms with transition metals (Cr ...
Jing Luo, Qun Wei, Xiaofei Jia, Meiguang Zhang, Zhenhua Wu, Xuanmin Zhu   +5 more
doaj   +1 more source

Geochemical Compositions of Size‐Fractioned Sediment Samples From the Yangtze and Yellow Rivers: Implications for Chemical Weathering, Fractionation Behavior of Provenance Tracers, and Sources of Radial Sand Ridges

Geochemistry, Geophysics, Geosystems, 2023
River sediments are valuable archives of the environmental conditions within their catchments. The Yangtze and Yellow Rivers are the most active fluvial systems for sediment transport in East Asia, and they are regarded as potential sediment sources for ...
Chao Wu, Yang Wu, Xiaoxiao Yu, Yiwei Chen, Weiguo Zhang, Jie Liu, Gangjian Wei   +6 more
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Developing a variable charge potential for Hf/Nb/Ta/Ti/Zr/O system via machine learning global optimization

Materials & Design, 2023
Despite widespread attentions on the HfNbTaTiZr refractory high-entropy alloy (RHEA) owing to various exceptional properties, insights into nanostructure-property relations are severely hindered by the lack of reliable interatomic potentials in atomistic
Yihan Wu, Wenshan Yu, Shengping Shen
doaj   +1 more source