Rod-like eutectic structure of arc-melted TiB2-TiCxN1-x composite

被引：26

作者：

Cheng, Eric Jianfeng ^{[1
]}

Katsui, Hirokazu ^{[1
]}

Tu, Rong ^{[2
]}

Goto, Takashi ^{[1
]}

机构：

[1] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan

[2] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2014年 / 34卷 / 09期

关键词：

TiB2-TiC-TiN; Eutectic composite; Rod-like structure; Lamellar structure; Vickers hardness; MECHANICAL-PROPERTIES; CERMETS; SYSTEM;

D O I：

10.1016/j.jeurceramsoc.2013.12.036

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：

TiB2-TiCxN1-x composites were synthesized by arc-melting mixtures of TiB2, TiC and TiN powders in a N-2 atmosphere at 60 kPa. TiB2-TiCxN1-x composites were obtained at TiN contents below 20 mol%, whereas TiB formed in the composites at higher TiN contents. TiB2-TiCxN1-x composites with a nominal composition of 36TiB(2)-44TiC-20TiN (mol%) had a rod-like eutectic structure, where the TiCxN1-x single-crystal rods dispersed in the TiB2 single-crystal matrix. The crystal orientation relationship between the TiB2 matrix and the TiCxN1-x rods was TiB2 (0 0 0 1)//TiCxN1-x (1 1 1). Vickers hardness (H-v) of the rod-like eutectic composite was 22.5 GPa. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：2089 / 2094

页数：6

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