摘要
采用电弧离子镀技术在DZ125和DSM11两种镍基高温合金基材上沉积Ni-Co-Cr-Al-Y-Si-B涂层,研究了高温合金基材及其Ni-Co-Cr-Al-Y-Si-B涂层在900℃的75％Na2SO4+25％K2SO4熔盐中的热腐蚀行为.结果表明,Ni-Co-Cr-Al-Y-Si-B涂层在热腐蚀过程中生成了连续致密的α-Al2O3氧化膜,有效地保护了合金基材免受腐蚀破坏,合金基材的热腐蚀性能对体系后期的热腐蚀行为影响很大.
Ni-Co-Cr-Al-Y-Si-B coatings were deposited on Ni base superalloys DZ125 and DSM11 by arc ion plating (AIP). The corrosion behaviors of DZ125, DSM11 and Ni-Co-Cr-Al-Y-Si-B coating in molten 75%Na2SO4+25%K2SO4 at 900 ℃ were studied. The results indicate that the coating can protect the DZ125 and DSM11 alloys from hot corrosion destruction due to the formation of a continuous and dense α-Al2O3 scale. In the last stage of the hot corrosion process, the hot corrosion behaviors of base alloys have important influences on behaviors of the whole systems.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
2004年第4期399-403,共5页
Acta Metallurgica Sinica
基金
中国科学院方向性创新课题资助项目KGCX2-212-02
