Fabrication of SiCw/Ti3SiC2 composites with improved thermal conductivity and mechanical properties using spark plasma sintering

• 作者: Dang-Hyok YOON Jaehyung LEE Jin-Young KIM Lei JING Qing HUANG Xiaobing ZHOU Yong Duk KWON Zhengren HUANG
• 来源期刊: 先进陶瓷（英文版）
• 年，卷（期）: 2020,（4）
• 所属期刊栏目: Research Article
• 页码范围: 462-470
• 页数: 9页
• 语种: 英文

摘要

High strength SiC whisker-reinforced Ti3SiC2 composites (SiCw/Ti3SiC2) with an improved thermal conductivity and mechanical properties were fabricated by spark plasma sintering.The bending strength of 10 wt％ SiCw/Ti3SiC2 was 635 MPa,which was approximately 50％ higher than that of the monolithic Ti3SiC2 (428 MPa).The Vickers hardness and thermal conductivity (k) also increased by 36％ and 25％,respectively,from the monolithic Ti3SiC2 by the incorporation of 10 wt％ SiCw.This remarkable improvement both in mechanical and thermal properties was attributed to the fine-grained uniform composite microstructure along with the effects of incorporated SiCw.The SiCw/Ti3SiC2 can be a feasible candidate for the in-core structural application in nuclear reactors due to the excellent mechanical and thermal properties.