Fabrication of thick W coatings by atmospheric plasma spraying and their transient high heat loading performance
Fabrication of thick W coatings by atmospheric plasma spraying and their transient high heat loading performance
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DOI：
10.1016/j.fusengdes.2010.05.021
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发表时间：
2010-12
影响因子：
1.7
通讯作者：
Zhangjian Zhou;S. Song;W. Yao;G. Pintsuk;J. Linke;Shuang-quan Guo;C. Ge
中科院分区：
文献类型：
--
作者：
Zhangjian Zhou;S. Song;W. Yao;G. Pintsuk;J. Linke;Shuang-quan Guo;C. Ge
采用大气等离子喷涂技术在无氧铜衬底上制备了W/Cu梯度过渡层和无W/Cu梯度过渡层。采用高纯Ar气体冷却基材，防止涂层氧化。两种涂层的厚度均为∼1 mm。X射线衍射和能谱分析表明，涂层在沉积过程中发生了极少量的氧化。在脉冲宽度为5ms的电子束作用下，对两种涂层进行了瞬时高热负荷试验。在原始表面施加不同功率密度(0.22~0.9GW/m2)的单脉冲加载。虽然W/CuFGM(功能梯度材料)涂层的失重率略低于纯W涂层，但它们的瞬时高热负荷性能非常相似。
Both tungsten coatings with or without a W/Cu graded interlayer on an oxygen-free copper substrate were fabricated by atmospheric plasma spraying. High purity argon gas was used for cooling the substrate and preventing the coating from oxidation. The thickness of both coatings is ∼1mm. XRD and EDS measurements of the coatings show that minimal oxidation occurred during the deposition process. Transient high heat load tests by electron beam with a pulse duration of 5ms were performed on both coatings. The single pulse loading was applied on the virgin surfaces at several power densities (from 0.22 to 0.9GW/m2). Although the weight loss of the W/Cu FGM (functionally graded materials) based coating was slightly lower than that of the pure W coating, their transient high heat loading performances were quite similar.