摘要
采用一次粒径分别为10nm和15nm的α-Al2O3和SiC超细粉体，制备了Al2O3／SiC纳米陶瓷复合材料，并研究了其强化机理．提出了内晶颗粒残余应力强化模型．该模型很好地解释了Al2O3／SiC纳米复合材料的强度和断裂方式随SiC颗粒含量的变化规律．
Al2O3/SiC ceramic nanocomposites were fabricated using ultrafine Al2O3 (10 nm in diameter) and SiC (15 nm in diameter) powders as the starting materials. Strengthening machanism of the composites was studied. A model of intra-granular particle residual stress strengthening was proposed.The model gives a good explaination of the variation of strength and fracture mode with the contant of SiC particles.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1999年第8期879-882,共4页
Acta Metallurgica Sinica
基金
国家自然科学基金!59502007
辽宁省自然科学基金!9521035
关键词
纳米复合材料
氧化铝
碳化硅
强化机理
nanocomposite, alumina, silicon carbide, strengthening mechanism
