Microstructure and mechanical properties of WC-20wt% Co/ZrO_2(3Y)cermet composites  

作　　者：Lin An Jingtao Han Jan Chen 

机构地区：[1]Materials Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China [2]Shougang Dongxing Industry Corporation, Yantan 264006, China

出　　处：《Journal of University of Science and Technology Beijing》2006年第2期174-177,共4页北京科技大学学报（英文版）

摘　　要：The cermet composites WC-20wt%Co/ZrO2（E6）with four different comtents of ZrO2（3Y）were prepared by normal vacuum sinter processing;the optical microscope and SEMwere used to characterize their microstructures.The hardness.bending strength and impact toughness of the specimens were determined.The experimental results show that ZrO2（3Y） particles in WC-20wt%Co matrix are sphcrical particles in different sizes which are distributed uniformly in Co phases and WC phases,the bending strength and impact toughness of the WC-20wt%Co cermet composites added ZrO2（3Y）improve remarkably.but the hardness values have little change.The cermet composites WC-20wt%Co/ZrO2（E6）with four different comtents of ZrO2（3Y）were prepared by normal vacuum sinter processing;the optical microscope and SEMwere used to characterize their microstructures.The hardness.bending strength and impact toughness of the specimens were determined.The experimental results show that ZrO2（3Y） particles in WC-20wt%Co matrix are sphcrical particles in different sizes which are distributed uniformly in Co phases and WC phases,the bending strength and impact toughness of the WC-20wt%Co cermet composites added ZrO2（3Y）improve remarkably.but the hardness values have little change.

关 键 词：ZrO2（3Y） cermet composites mechanical properties microstructure normal vacuum sinter 

分 类 号：TF125.3[冶金工程—粉末冶金] TG148[冶金工程—冶金物理化学]