Low-temperature fabrication of porous ZrC/C composite material from molten salts

被引：36

作者：

Kan, Xiaoqing ^{[1
]}

Ding, Jun ^{[1
]}

Yu, Chao ^{[1
]}

Zhu, Hongxi ^{[1
]}

Deng, Chengji ^{[1
]}

Li, Guyao ^{[1
]}

机构：

[1] Wuhan Univ Sci & Technol, State Key Lab Refractories & Met, Wuhan 430081, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2017年 / 43卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Biomorphic ceramic; ZrC/C; C template; Molten salt; PULSED-LASER DEPOSITION; MECHANICAL-PROPERTIES; RAMAN-SPECTROSCOPY; ASSISTED SYNTHESIS; WOODEN TEMPLATE; BIO-TEMPLATE; THIN-FILMS; WOODCERAMICS; GRAPHITE; SURFACE;

D O I：

10.1016/j.ceramint.2017.02.048

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：

In this work, biological ceramic-wood porous ZrC/C materials were prepared in a KCl-KF molten salt reaction medium, using Zr as a metal source and a C template as C source. The effects of reaction temperature and salts/ Zr mole ratio on the formation of porous biomorphic ZrC/C ceramics were investigated. The phase compositions and morphological structures of the C templates and porous ZrC/C ceramics were characterized by X-ray diffraction, Raman spectroscopy, scanning electron microscopy, transmission electron microscopy, thermo-gravimetric analysis, and pore size analysis. The results showed that the ZrC grains were equiaxed and enhanced the oxidation resistance of the material. Furthermore, a possible reaction mechanism for the formation of porous biomorphic ZrC/C ceramics in molten salt is proposed.

引用

页码：6377 / 6384

页数：8

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