溅射Ni16Co26Cr10Al纳米晶涂层的1000℃抗氧化性能  

Oxidation resistance of magnetron-sputter Ni16Co26Cr10Al nanocrystalline coating at 1000 ℃

作　　者：周月波[1] 刘修超[1] 陈洪玉[1] 王永东[1] 孙俭锋[1] 

机构地区：[1]黑龙江科技学院材料科学与工程学院,黑龙江哈尔滨150027

出　　处：《金属热处理》2008年第6期54-56,共3页Heat Treatment of Metals

基　　金：黑龙江科技学院引进人才项目(06-13);黑龙江省教育厅项目(10553080)

摘　　要：利用磁控溅射技术在铸造Ni16Co26Cr10Al合金上溅射了相同成分的纳米晶涂层。1000℃氧化试验结果表明由于溅射Ni16Co26Cr10Al纳米晶涂层晶粒尺寸细小,促进了保护性氧化物形成元素Al向氧化前沿的快速扩散和保护性Al2O3层的快速形成,使得溅射Ni16Co26Cr10Al纳米晶涂层表现出比M38合金更优异的抗氧化性能。Magnetron-sputter deposition was used to prepare Ni16Co26Cr10Al nanocrystalline coating on a cast alloy substrate with the same composition. The results show that the sputterd Ni16Co26Cr10Al nanocrystalline coating exhibits better oxidation resistance at 1000 ℃ compared with the cast M38 superalloy as a result of the formation of a continuous and compact Al2O3 layer due to the enhanced diffusion of Al to the oxidation front along the increased ＂short-circuit＂ grain boundaries.

关 键 词：氧化 镍基高温合金 磁控溅射 

分 类 号：TG174.4[金属学及工艺—金属表面处理]