Fabrication and mechanical properties of Al2O3–Ni composite from two different powder mixtures
作者： Guo-jun Li , Xiao-xian Huang , Jing-kun Guo
DOI: 10.1016/S0921-5093(02)00255-1
关键词: Composite material 、 Materials science 、 Toughness 、 Coating 、 Sintering 、 Microstructure 、 Non-blocking I/O 、 Hot pressing 、 Fabrication 、 Composite number
摘要: Abstract Al 2 O 3 –4vol.%Ni composites were prepared by hydrogen reduction and hot pressing of powder mixtures NiO obtained two processes, namely, the ball-milled mixing process (process A) coating B). The microstructural features sintering behavior mixtures, mechanical properties investigated. samples synthesized through A B at 1450 1400 °C reached >98% theoretical densities. homogeneity was in agreement with characteristics different mixtures. Compared that A, fabricated exhibited an increase toughness a decrease strength. toughening mainly attributed to crack deflection branching. difference strength discussed observed microstructure fracture model composites. standard deviations (S.D.) indicated had better reliability stability.
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