HEDP表面处理对Ni_3Al氧化行为的影响  

Effect of HEDP Surface Treatment on the Oxidation Behaviour of Ni_3Al

作　　者：齐慧滨[1] 马铁军[1] 何业东[1] 王德仁[1] 朱日彰[1] 

机构地区：[1]北京科技大学腐蚀与防护中心,腐蚀,磨蚀与表面技术实验室,北京100083

出　　处：《北京科技大学学报》2000年第4期347-349,共3页Journal of University of Science and Technology Beijing

基　　金：国家自然科学基金!59801002;国家重点实验室资助

摘　　要：利用高能量密度等离子体（HEDP）对金属间化合物Ni3Al进行了表面处理，在合金表面获得了纳米级微晶层．该微晶层可以通过增加Al2O3优先形核位置和提高Al的向外扩散促进Ni3Al氧化时形成表面Al2O3，消除了生长速度较快的NiO相．Surface treatment to the Ni3Al intermetallic compound was conducted by high energy density plasma and nanometer micro-crystalline layers were developed on the alloy surface.Formation of protective Al2O3, scales on the alloy surface was promoted by increasing the nucleaton sites and enhancing the outward ditheion of Al in the micro-crystalline structure. The fast growing phase NiO was eliminated in the oxide scales.

关 键 词：高能量密度等离子体 表面处理 氧化 镍铝合金 

分 类 号：TG174.451[金属学及工艺—金属表面处理]