Articles - Crack healing of alumina according to the added amount of silicon carbide
- Kwang-Ho Leea, Ki-Woo Namb and Seok-Hwan Ahnc,*
- a Daewoo Shipbuilding & Marine Engineering Co., Ltd., Gyeongsangnam-do, 53302, Korea b Department of Materials Science and Engineering, Pukyong National University, Busan 48547, Korea c Department of Mechatronics, Jungwon University, Chungbuk, 28024, Korea
Abstract
Three kinds of Al2O3-composite ceramic were prepared using mixtures of Al2O3, SiC and Y2O3. The Y2O3 was set as constant to 3 wt%, while three concentrations of the silicon carbide were applied (10, 15, and 20 wt%). The crack healing was studied as functions of the heat-treatment temperature and the amount of SiC. The heat treatment was carried out at 1473, 1573, and 1673 K for 1 hr in air. The results show that the corresponding crack-healing ability is superior regardless of the added amount of SiC.
Keywords: Al2O3, concentration of SiC, Y2O3, Vickers Indentation, Crack Healing.
This Article
Copyright 2019 International Orgranization for Ceramic Processing. All rights reserved.Clean-Energy Research Institute(CRI), Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Korea
E-mail: jcpr@hanyang.ac.kr