Microstructure formation of porous silicon carbide ceramics during β-α phase transformation

被引：6

作者：

Lee, EunJu ^{[1
]}

Lee, MiSa ^{[1
]}

Shim, Jiin ^{[1
,2
]}

Min, Kyugseok ^{[1
,2
]}

Kim, Deug J. ^{[1
]}

机构：

[1] Sungkyunkwan Univ, 2056 Seobu Ro, Suwon 16419, Gyeonggi Do, South Korea

[2] LG Innotek, Ansan, Gyeonggi Do, South Korea

来源：

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2017年 / 65卷

基金：

新加坡国家研究基金会;

关键词：

SiC; Porous ceramic; Grain growth; Phase transformation;

D O I：

10.1016/j.ijrmhm.2016.11.007

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of particle size and initial powder phase on the microstructure of porous SiC ceramics was investigated. When beta-SiC powder was used as a starting material, porous SiC ceramics were formed by rapid grain growth of alpha-SiC during the beta-alpha phase transformation. As the particle size of the initial powders decreased, (beta-alpha SiC phase transformation and rapid grain growth of alpha-SiC occurred earlier. Grain and pore size of SiC porous ceramics can be controlled by the addition of alpha-SiC seed. Grain and pore size decreased as the concentration of alpha-SiC seed increased. The bending strength of porous SiC ceramics did not depend on pore size. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：64 / 68

页数：5

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