Liquid precursor-derived high-entropy carbide nanopowders

被引：74

作者：

Li, Fei ^{[1
]}

Lu, Ying ^{[2
]}

Wang, Xin-Gang ^{[3
]}

Bao, Weichao ^{[3
]}

Liu, Ji-Xuan ^{[1
]}

Xu, Fangfang ^{[3
]}

Zhang, Guo-Jun ^{[1
]}

机构：

[1] Donghua Univ, Sate Key Lab Modificat Chem Fibers & Polymer Mat, Coll Mat Sci & Engn, Inst Funct Mat, Shanghai 201620, Peoples R China

[2] Shenzhen Univ, Coll Mat Sci & Engn, Shenzhen 518055, Peoples R China

[3] Chinese Acad Sci, Shanghai Inst Ceram, Sate Key Lab High Performance Ceram & Superfine M, Shanghai 200050, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2019年 / 45卷 / 17期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Precursor-derived ceramics; High-entropy materials; Transition metal carbide; Nanopowders; CERAMICS; NANOFIBERS; MONOLITHS;

D O I：

10.1016/j.ceramint.2019.07.244

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report a simple liquid precursor method for the synthesis of single-phase high-entropy carbide (HEC) nanopowders. Transition metal halides (TiCl4, ZrCl4, HfCl4, NbCl5, TaCl5) and furfuryl alcohol are used as metal sources and carbon source. The liquid precursor can be converted into mixtures of five binary carbides via carbothermal reduction at 1400 degrees C in vacuum, and can be further transformed into single-phase HEC nanopowders through solid solution formation by heat treatment at 2000 degrees C. The as-synthesized HEC nanopowders possess an average particle size of 132 +/- 5 nm, a specific surface area of 24.5 m(2)/g, and an oxygen content of 0.22 wt%, respectively.

引用

页码：22437 / 22441

页数：5

共 33 条

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