摘要
本文研究了Ｎｉ（８０）Ｃｒ（２０）耐热合金经过Ｙ离子注入后的高温抗氧化行为，氧化膜的形貌及其结构特征。结果表明，Ｙ离子注入明显提高材料高温抗氧化性，使１１００℃下氧化增重明显减小。当注入剂量为２×１０（１７）ｉｏｎｓ／ｃｍ２，氧化时间为３０５ｈ，氧化增重减小约５０％。同时使得氧化膜形貌发生明显变化。随着注入量增多，氧化皮由原来的块状变为球状，而且尺寸变小。ｘ光分析表明，氧化皮主要由Ｃｒ２Ｏ３，ＮｉＣｒ２Ｏ４和ＮｉＯ组成。光谱分析表明，注入Ｙ的试样氧化皮中含有微量Ｙ。
Astudy has been made of the influence of the surface ionimplantation of yttrium upon the high temperature oxidation behaviour, morphology of oxide film and its structure of a Ni(80)Cr(20) alloy. It has been shown that the high temperature oxidation resistance was increased and the weight increment reduced at 1100℃ by Y ionimplantation. When the dose of implanted ions was 2 ×10(17) ions/cm2 and the specimen was held at 1100℃ for 305h, the weight increment reduced more than 50 percent. Meanwhile, the morphology of the oxide film was much different from that of Y nonimplanted one. The morphology change of oxidation film was found from lumpish to spheroidal and the size reduced gradually with the dose increasing of implanted ions. X-ray and spectral graphic analysis showed that oxidation scales were mainly consisted of Cr2O3, NiCr2O4 and NiO, and that of Y ion implatation contained a little Y.
出处
《稀土》
EI
CAS
CSCD
1995年第5期10-13,18,共5页
Chinese Rare Earths
基金
三束材料改性国家重点联合实验室基金
