【作者】 刘林； 雷浩； 宫骏； 孙超；

【Author】 LIU Lin;LEI Hao;GONG Jun;SUN Cao;Institute of Metal Research, Chinese Academy of Sciences;School of Materials Science and Engineering, University of Science and Technology of China;

【机构】 中国科学院金属研究所； 中国科学技术大学材料科学与工程学院；

【摘要】 采用两步法在Nb-10Hf-1Ti合金基体上制备了MoSi₂涂层。首先采用电弧离子镀在基体表面沉积Mo层,然后采用真空包埋渗工艺制备MoSi₂涂层。涂层由MoSi₂外层和粘接层组成。涂层通过1200℃静态空气中氧化100h实验,试样氧化增重为0.64mg/cm²。MoSi₂涂层抗氧化作用是由于氧化过程中在涂层表面产生了SiO₂保护膜。更多还原

【Abstract】 MoSi₂ coating was prepared on super alloys by a two-step process. The first step was Arc Ion Plating（AIP） of Mo layer and the second step was pack cementation（HAPC） of Si. The coating is composed of an outer layer of MoSi₂ and an inner bond layer. After oxidation test at 1200℃ for 100 h in static air, mass gain of the coated specimen is 0.64mg/cm². The good oxidation resistance of the MoSi₂ coating is attributed to the protective SiO₂ scale generated upon oxidation process.更多还原