Influence of substrate composition on the oxidation performance of nickel aluminide coating prepared by pack cementation
Influence of substrate composition on the oxidation performance of nickel aluminide coating prepared by pack cementation
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DOI：
10.1016/j.corsci.2016.04.041
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发表时间：
2016-09
影响因子：
8.3
通讯作者：
Y. Zhou;L. Wang;Guan Wang;Dongliang Jin;Hao Wei;Xiaofeng Zhao;Jian Zhang;P. Xiao
中科院分区：
文献类型：
--
作者：
Y. Zhou;L. Wang;Guan Wang;Dongliang Jin;Hao Wei;Xiaofeng Zhao;Jian Zhang;P. Xiao
研究了基体成分对包渗NiAl涂层微观结构和氧化行为的影响。研究发现，基材成分对涂层微观结构和氧化性能具有深远的影响。由于 Hf 的存在，DZ125 和 DD6 涂层系统表现出更好的抗剥落性。界面皱褶以及 TiO2 和富钛氧化物是 DZ411 涂层系统氧化物剥落的原因。氧化物/涂层界面处的空隙导致界面附着力较低，导致镍和哈氏合金 X 涂层系统最严重的氧化物剥落。
Effects of substrate compositions on the microstructure and oxidation behavior of NiAl coating by pack cementation were investigated. It is found that substrate compositions have a profound influence on the coating microstructure and oxidation performance. The DZ125 and DD6 coating systems exhibit better spallation resistance due to the presence of Hf. The interface rumpling, as well as the TiO2and Ti-rich oxide are responsible for the oxide spallation of the DZ411 coating system. The voids at the oxide/coating interface, leading to a lower interfacial adhesion, result in the worst oxide spallation of the Ni and Hastelloy X coating systems.