Effects of oxidation of Cr3C2 particulate-reinforced alumina composites on microstructure and mechanical properties |
| |
Authors: | Chen-Tsu Fu Al-Kang Li Jenn-Ming Wu |
| |
Affiliation: | (1) Material Research Laboratories Industrial Technology Research Institute, 31015 Hsinchu, Taiwan;(2) Department of Materials Science and Engineering National Tsing Hua University, 31015 Hsinchu, Taiwan |
| |
Abstract: | Al2O3 can be strengthened and toughened by incorporating Cr3C2 particles through hotpressing. For instance, an Al2O3-10 vol% Cr3C2 composite exhibits fracture strength and toughness of 600 MPa and 5.5 Mpa m0.5, respectively. An annealing treatment in air from 1000–1200 C may further substantially strengthen the same composite to give f = 800 MPa andK
IC = 9.5 MPam0.5. Possible oxidation reactions and toughening mechanisms are discussed in terms of oxygen diffusion, the formation of micropores beneath the exposed surface, as well as the fracture mode. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|