Preparation of multi-walled carbon nanotube-reinforced TiNi matrix composites from elemental powders by spark plasma sintering

查看全文 作　　者：CAI Wei,FENG Xue,and SUI Jiehe National Key Laboratory Precision Hot Processing of Metals,School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China

出　　处：《Rare Metals》索引2012年第31卷第1期,共3页

基　　金：financially supported by Natural Science Foundation of China (No.51071059 and No.50971052);the Fundamental Research Funds for the Central Universities (No.HIT.KLOF.2010005) 摘　　要：Carbon nanotube (CNT)-reinforced TiNi matrix composites were synthesized by spark plasma sintering (SPS) employing elemental powders.The phase structure,morphology and transformation behaviors were studied.It was found that thermoelastic martensitic transformation be-haviors could be observed from the samples sintered above 800 ℃ even with a short sintering time (5min),and the transformation tempera-tures gradually increased with increasing sintering temperature because of more Ti-rich TiNi phase formation.Although decreasing the sin-tering temperature and time to 700 ℃ and 5min could not protect defective MWCNTs from reacting with Ti,still-perfect MWCNTs re-mained in the specimens sintered at 900 ℃.This method is expected to supply a basis for preparing CNT-reinforced TiNi composites. 关键词：metallic composites shape memory materials carbon nanotubes spark plasma sintering

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Preparation of multi-walled carbon nanotube-reinforced TiNi matrix composites from elemental powders by spark plasma sintering

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