Oxidation behavior of Ni-Al coating with and without a Ni-Re diffusion barrier in dry CO2 gas at 650 degrees C
Oxidation behavior of Ni-Al coating with and without a Ni-Re diffusion barrier in dry CO2 gas at 650 degrees C
复制标题
具有和不具有 Ni-Re 扩散阻挡层的 Ni-Al 涂层在 650°C 干燥 CO2 气体中的氧化行为
DOI：
10.1016/j.corsci.2019.01.021
复制
发表时间：
2019
影响因子：
8.3
通讯作者：
Young David J
中科院分区：
文献类型：
--
作者：
Li Meifeng;Kong Charlie;Zhang Jianqiang;Zhou Chungen;Young David J
电镀Ni-Re层作为扩散屏障，抑制Ni-Al涂层与铁合金基体之间的相互扩散。在650°C的干燥co2气体中，研究了Ni-Al涂层在有扩散屏障和没有扩散屏障时的氧化行为，氧化时间长达660 h。无扩散屏障的Ni-Al涂层在暴露过程中在较厚扩散区（DZ）前部发生了严重的内氧化，而Ni-Al/Ni-Re涂层仅发生了轻微的内氧化。Ni-Al/Ni-Re涂层的优异性能是由于其具有较好的抗内氧化性。
An electroplated interlayer of Ni-Re was prepared as a diffusion barrier to inhibit interdiffusion between Ni-Al coating and an iron alloy substrate. The oxidation behavior of the Ni-Al coating with and without the diffusion barrier was studied at 650 °C in dry CO2gas for up to 660 h. The Ni-Al coating without a diffusion barrier underwent severe inner oxidation in the front of the rather thick diffusion zone (DZ) during exposure, while only slight inner oxidation was found in the Ni-Al/Ni-Re coating. The superior performance of the Ni-Al/Ni-Re coating is ascribed to its much better resistance to inner oxidation.