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High-Performance Al–Si Coatings Toward Enhancing Oxidation Resistance of Tungsten by Halide-Activated Pack Cementation
Frontiers in Materials ( IF 3.2 ) Pub Date : 2020-04-21 , DOI: 10.3389/fmats.2020.00136
Liu Zhu , Yu-Xiang Zhang , Jin-Fang Wang , Lai-Ma Luo

An aluminide–silicide coating was prepared on a pure tungsten substrate by halide-activated pack cementation. Thickness, morphology, and phase structure of the Al–Si coating were systematically investigated. Thermal cyclic oxidation tests of the Al–Si coating were carried out at 1,000°C. The results revealed that the aluminide and silicide coating possessed relatively high cyclic oxidation resistance against high temperature. After oxidation, dense SiO2 and Al2O3 were formed in the coating. Oxidation rate of the Al–Si coating was lower than that of the pure tungsten.



中文翻译:

高性能铝硅涂层,通过卤化物活化填充胶结来提高钨的抗氧化性

通过卤化物活化的填充胶结法在纯钨基材上制备了铝化物-硅化物涂层。系统地研究了Al-Si涂层的厚度,形态和相结构。Al-Si涂层的热循环氧化测试在1,000°C下进行。结果表明,铝化物和硅化物涂层具有较高的耐高温循环氧化性。氧化后,在涂层中形成致密的SiO 2和Al 2 O 3。Al-Si涂层的氧化速率低于纯钨。

更新日期:2020-04-21
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