Results 21 to 30 of about 2,177 (171)

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
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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
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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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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
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In-situ formation mechanism of a superlattice (Ti,Zr,Hf,Nb,Ta)C high-entropy carbide via reactive melt infiltration

Materials & Design
High-entropy carbide ceramics are promising ultrahigh-temperature materials due to their excellent thermal stability and mechanical properties. However, their synthesis typically relies on energy-intensive techniques such as high temperatures and ...
Yuyu Song, Yejie Cao, Yuran Xia, Yansong Liu, Yongsheng Liu   +4 more
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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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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
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Comparing the Tribological Properties of the Coatings (Ti-Hf-Zr-V-Nb-Ta)N and (Ti-Hf-Zr-V-Nb-Ta)N + DLC [PDF]

Журнал нано- та електронної фізики, 2015
The paper compares the tribological characteristics of the coatings (Ti-Hf-Zr-V-Nb-Ta)N and (Ti-Hf-Zr-V-Nb-Ta)N + DLC obtained by means of vacuum-arc deposition method.
U.S. Nyemchenko, V.M. Beresnev, V.F. Gorban, V.Ju. Novikov, O.V. Yaremenko   +4 more
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COMPOSITIONAL FEATURES AND AGE OF ALKALINE GRANITES OF THE INGUR MASSIF, WESTERN TRANS-BAIKAL AREA

Геодинамика и тектонофизика, 2022
The Ingur alkaline granite massif and the associated Zr-Nb occurrence make up part of the largest Mongolian-Trans-Baikal alkaline granitoid provinces. The massif is composed of arfvedsonite, biotite, and alaskite granites. High content of HREE determines
M. V. Rampilova, M. O. Rampilov, I. A. Izbrodin   +2 more
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Computational screening study of double transition metal carbonitrides M′2M″CNO2-MXene as catalysts for hydrogen evolution reaction

npj Computational Materials, 2021
Two-dimensional (2D) transition metal carbonitrides (MXene) have attracted growing interest in electrocatalytic hydrogen production due to its structural and electronic properties.
Zhoulan Zeng, Xingzhu Chen, Kaiyi Weng, Yang Wu, Peng Zhang, Jizhou Jiang, Neng Li   +6 more
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