摘要
以镍基高温合金GH907为基体,通过低压等离子喷涂和超音速火焰喷涂技术制备了NiCoCrA-lY涂层和NiCr涂层,并对样品进行了真空热处理.对热处理前后的涂层进行常温中性盐雾腐蚀及电化学性能的研究表明:热处理前后NiCoCrAlY涂层的抗腐蚀性能均优于NiCr涂层,热处理后NiCoCrAlY涂层和NiCr涂层的腐蚀等级都有所提高,出现腐蚀的时间推迟.
The parperation was based on GH907 supper alloy by LPPS and HVOF sprayed NiCoCrAIY coatings and NiCr coatings,and after parperation, the sample was heated for heat treatment. The coatings before and after heat treatment were tested by 500h neuter salt spray testing on normal atmospheric temperture and by electrochemical performance. The results showed the corrosion resistance of the NiCoCrAlY coating before and after heattreat- ment is better than the NiCr coating, and the corrosion grade of two coatings were incresed after heat treatment.
出处
《材料研究与应用》
CAS
2009年第1期60-64,共5页
Materials Research and Application
