钽表面微弧氧化陶瓷层的抗氧化性能
Antioxidation of MAO Layers on Tantalum Surface
摘 要
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、放电频率、氧化时间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,对高温抗氧化性影响最大的两个原因是微弧氧化陶瓷层中铝元素的含量和致密性.在电压400 V、1 000 Hz、20 min时陶瓷层的高温抗氧化性最好.
钽
抗氧化性能
micro-arc oxidation
tantalum
antioxidation
Abstract
A ceramic layer on the surface of tantalum metal was prepared by micro-arc oxidation technology.The morphology of the layer was observed by SEM.The weight method was adopted to study the oxidation resistance of the ceramic layer.The effect of discharge experiment gain parameters on the oxidation resistance of the layer was discussed.The results show that the micro-arc oxidation treatment could significantly improve the high temperature oxidation resistance of tantalum metal surface;the largest effect on the high temperature oxidation resistance resulted from the level of Al in the micro-arc oxidation coating and the compactness of the coating.When the processing conditions were 400 V,1 000 Hz and 20 min,the high temperature oxidation resistance of the ceramic layer was the best.
中图分类号 TG174.4 TS206 DOI 10.11973/fsyfh-201506013
所属栏目 试验研究
基金项目
收稿日期 2015/4/20
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备注杨海彧(1984-),工程师,硕士研究生,从事材料的表面处理技术.
引用该论文: YANG Hai-yu,LI Zheng-xian,WANG Yi-fei. Antioxidation of MAO Layers on Tantalum Surface[J]. Corrosion & Protection, 2015, 36(6): 563
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参考文献
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【10】翟金坤,马祥,白新德,等.C-103铌合金上Si-Cr-Ti浆料熔烧涂层的改性研究[J].航空学报,1994,15(4):499-501.
【11】王禹,陈渂,郜嘉平,等.铌合金表面改性Ti-Cr-Si保护涂层耐热性研究[J].空间科学技术,2000,20(3):262-265.
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【17】沈徳久,王玉林,卢立红,等.铝合金表面微弧氧化自润滑陶瓷覆层[J].材料保护,2000,33(5):51-52.
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