摘要
针对Ti6A l4V合金高温抗氧化性差的问题,采用双层辉光离子技术进行钴铬共渗并对渗层高温抗氧化性能进行研究。结果表明,渗层组织均匀、致密、无裂纹,由沉积层、过渡层和扩散层构成,与Ti6A l4V合金基体间呈冶金结合;钴铬共渗层的高温氧化质量增加明显低于基体,其主要原因是渗层在高温氧化后生成组织致密的Cr2O3,有效地阻止了基体的进一步氧化,从而显著提高了Ti6A l4V合金表面高温抗氧化性能。
For solving the problem of poor high-temperature oxidation resistance of Ti6Al4V alloy,Co-Cr alloying layer was fabricated by means of double glow plasma technology and the high-temperture oxidation resistance of Co-Cr alloying layer was studied.The results show that Co-Cr alloying layer bonded to the substrate metallurgically is uniform,compact and crack free,which is composed of deposited layer,transition layer and diffusion layer.The oxidation mass gain of Co-Cr alloying layer is obviously less than the substrate,mainly because Cr2O3 generated at high temperature can effectively prevent further oxidation,resulting in the high-temperature oxidation resistance improved obviously.
出处
《金属热处理》
CAS
CSCD
北大核心
2011年第1期33-36,共4页
Heat Treatment of Metals
基金
航空科学基金(2007ZE52057)
关键词
TI6AL4V合金
双层辉光离子渗技术
钴铬共渗
高温抗氧化
Ti6Al4V alloy
double glow plasma coating technology
Co-Cr alloying
high-temperature oxidation resistance
作者简介
崔宏（1985-），女，湖北荆州人，硕士，主要从事金属表面热处理方面的工作。E—mail：cuihong_family@163．com
