Affiliation:
1. Shenyang University of Technology
Abstract
In order to reduce its costs and increase its strength and toughness, 3Y-ZrO2/Al2O3 nanocomposite ceramics is fabricated through pressureless sintering process. Microstructure is detected by SEM and composition is analyzed by EDS. The results show that some of ZrO2 combined with Al2O3 forms ZrO2+Al2O3 solid solutions, and the others form particles which are distributed on grain boundaries and matrixes with different shapes. Those ZrO2 particles locating in the boundaries enhance the ceramic’s toughness by two modes: fracturing and tearing, and which one to be occur depends on the location relationship between load and boundary interface. The composition transition, i.e. the solid solution consisting of ZrO2+Al2O3 has formed encircling ZrO2 particles, and it has a positive contribution to ceramics toughness through the combination of chemical bond.
Publisher
Trans Tech Publications, Ltd.
Reference10 articles.
1. I.A. Chou, H.M. Chan, M.P. Harmer: Journal of the American Ceramic Society. Vol. 79 (1996), p.2403–2409.
2. L. Gao, W. Li and H.Z. Wang, et al: Journal of Inorganic Materials. Vol. 15 (2000), p.1005–1008. (In Chinese).
3. L.L. Shi, L.K. Zeng and H. Wang: Materials Review. Vol. 17 (2003), p.72–74. (In Chinese).
4. L. Gao, W. Li: Nanoceramics (Chemical Industry Press, China, 2002)(In Chinese).
5. M. Yoshimura, T. Ohji and M. Sando, et al: Journal of Materials Science Letters. Vol. 17 (1998), p.1389–1391.
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献