Oxidation of a NiCrAlYSi overlayer with or without a diffusion barrier deposited by one-step arc ion plating
Oxidation of a NiCrAlYSi overlayer with or without a diffusion barrier deposited by one-step arc ion plating
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DOI：
10.1016/j.corsci.2010.02.022
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发表时间：
2010-05
影响因子：
8.3
通讯作者：
W. Li;Y. Q. Li;Qisheng Wang;Chao Sun;Xin Jiang
中科院分区：
文献类型：
--
作者：
W. Li;Y. Q. Li;Qisheng Wang;Chao Sun;Xin Jiang
通过一步电弧离子镀 (AIP) 沉积具有或不具有扩散阻挡层 (DB) 的 NiCrAlYSi 覆盖层涂层系统。等温氧化和循环氧化分别在 1050°C 下进行 100 小时和 100 个循环。结果表明，双层涂层系统对基材表现出更有效的保护，薄而连续的鳞片粘附在覆盖层表面，并且检测到非常有限的氧化和相互扩散攻击。暴露100h或100个循环后，DB稳定且高效。讨论了两种涂层体系的抗氧化机理。
The coating systems of a NiCrAlYSi overlayer with or without a diffusion barrier (DB) were deposited by one-step arc ion plating (AIP). Isothermal and cyclic oxidations were performed at 1050°C for 100h and 100 cycles, respectively. The results indicate that the duplex coating system exhibits a more effective protection for the substrate, where thin and continuous scales are adhered to the overlayer surface, and very limited oxidation and interdiffusion attacks are detected. After exposure for 100h or 100 cycles, the DB is stable and efficient. The oxidation resistance mechanism for the two coating systems is discussed.