Low temperature spark plasma sintering of Al2O3-TiC composites

被引：21
|
作者：
Meir, S. [1 ]
Kalabukhov, S. [1 ]
Hayun, S. [1 ]
机构：
[1] Ben Gurion Univ Negev, Dept Mat Engn, IL-84105 Beer Sheva, Israel
来源：
CERAMICS INTERNATIONAL | 2014年 / 40卷 / 08期
关键词：
Aluminum oxide; Ceramic composite; Spark plasma sintering (SPS); Titanium carbide; MECHANICAL-PROPERTIES; MICROSTRUCTURE; TOOLS;
D O I：
10.1016/j.ceramint.2014.04.059
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：
Al2O3-TiC composites were fabricated using spark plasma sintering (SPS) technology between 1300 degrees C and 1500 degrees C. The composite densification process starts at 950 degrees C, with a maximum densification rate at 1170 degrees C. After thirty minutes soaking at 1400 degrees C, a relative density of 99.5% was achieved. Microstructure analysis reveals a submicron Al2O3 grain size and homogenous distribution of titanium carbide in the matrix. The fully dense Al2O3-20 wt% TiC composite exhibits high values of fracture toughness (8.3 MPa m(1/2)), Young's modulus (406 GPa), flexural strength (850 MPa) and hardness (21 GPa). (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：12187 / 12192
页数：6
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