摘要
用金属钨作为延性层,增韧碳化硅陶瓷,制备了SiC/W层状复合材料,并测试了其力学性能。结果表明,在保持强度不变的同时,断裂韧性提高了1倍。XRD和SEM分析发现,W和SiC发生化学反应,界面产生新相,增强了层状复合材料的界面结合,但同时降低了金属对陶瓷的增韧效果。
Laminated composites containing alternate layers of SiC and W materials were used as model materials for investigating mechanical properties. Results indicated that toughness of laminated composites was improved by a factor of two over monolithic Silicon Carbide. Meanwhile the strength had no change. XRD and SEM analysis showed that there was chemical reaction between W and SiC,and new phases were produced on the interface. The new phases toughened interface bonding but reduced the toughening effect of the metal on ceramic.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2000年第5期49-51,共3页
Materials Reports
基金
国家自然科学基金(59632090)