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.
出处
《中国表面工程》
EI
CAS
CSCD
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)
