00Cr17Ni14Mo2不锈钢高温氮离子注入层的氮分布和组织  

The Nitrogen Distribution and Microstructure of 00Cr17Ni14Mo2 Stainless Steel Surface Implanted with Nitrogen at Elevated Temperature

作　　者：白彬[1] 张鹏程[1] 邹觉生[1] 陈元儒[2] 

机构地区：[1]中国工程物理研究院 [2]西南交通大学材料工程系

出　　处：《中国表面工程》2000年第3期21-24,共4页China Surface Engineering

基　　金：中国工程物理研究院资助项目!(9490340)

摘　　要：研究了在１５０℃～４６０℃范围内氮离子注入００Ｃｒ１７Ｎｉ１４Ｍｏ２奥氏体不锈钢后，注入层的氮分布和组织结构。结果表明，注入层的氮分布和表面组织结构依赖于注入温度。注入温度高于２５０℃，氮发生了明显的扩散，氮离子的表观扩散系数与温度的关系较好地满足Ａｒｒｈｅｎｉｕｓ方程；与低温离子注入相比，表面含氮层深度呈数量级的增加，且氮离子的保持剂量率随注入温度升高而增加。注入温度高于３５０℃时。The nitrogen distribution and microstructure of 00Cr17Ni14Mo2 austenitic stainless steel implanted with nitrogen at temperature the range form 150℃to 460℃ has been studies.Its nitrogen profile and microstructure in nitrogen containing layer depends markedly on the implan tation teperature.Nitrogen ion implantated above 250℃ can diffuse rapidly,and its diffuseve coefficient corresponds approximately to Arrenius equation.Thenitrogen contatining depth is an order of magnitudes greater at 460℃ than at conventional temperature,and the retaining dose rate of nitrogen ion increaese with implantation temperature.When itis implanted above 350℃,the nitrogen containing layer is composed mainly of expanding austenite,and the content of nitrogen is related with to crysatal direction.

关 键 词：离子注入 00CR17NI14MO2 氮分布 组织 

分 类 号：TG174.444[金属学及工艺—金属表面处理]