摘要
研究了放电电压对微弧氧化陶瓷层抗氧化性的影响。通过微弧氧化技术在钽金属表面制备陶瓷层,并采用SEM观察了陶瓷层的表面形貌,采用增重法对陶瓷层的抗氧化性能进行研究,探讨了放电电压对陶瓷层抗氧化性能的影响。结果表明,对钽金属表面进行微弧氧化处理,可以显著提高钽金属的高温抗氧化性能,以及对高温抗氧化性影响最大的微弧氧化膜层的致密性;电压400V时的高温抗氧化性最好。
The influence of discharge voltage on micro-arc oxidation ceramic coatings on oxidation resistance was studied. Ceramic layer on the surface of tantalum metal was prepared by micro-arc oxidation technology. The conformation of cladding was detected and proofed by SEM. The weight method was adopted to study the oxidation resistance of the ceramic layer. Effect of discharge voltage on the performance of oxidation resistance of the ceramic layer was discussed. Results show that the micro-arc oxidation treatment could significantly improve the high temperature oxidation resistance of tantalum metal surface, and the densification of the micro-arc oxidation coating which has the largest effect on the high temperature oxidation resistance. When the voltage is 400 V ceramic layer exhibits the best high temperature oxidation resistance.
关键词
微弧氧化
钽
高温抗氧化性
micro-arc oxidation, tantalum, high temperature oxidation resistance
