Amorphization and structural modification of the oxide film of Ni-based alloy by in-situ H charging in high temperature high pressure water environment
Amorphization and structural modification of the oxide film of Ni-based alloy by in-situ H charging in high temperature high pressure water environment
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DOI：
10.1016/j.corsci.2020.108474
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发表时间：
2020-01
影响因子：
8.3
通讯作者：
Zihao Wang;Y. Takeda
中科院分区：
文献类型：
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作者：
Zihao Wang;Y. Takeda
通常认为，氢参与的镍基合金氧化膜中只能生成有限数量的非晶相。然而，在本研究中，在镍基合金600（Ni-15.5Cr-9.4Fe，wt.%）的氧化膜上形成了显著的非晶层，在高温高压水环境中原位充氢氧化后，膜孔隙率和PH 2 O/PH 2的协同作用被认为是一个合理的机制。在氧化层与基体界面处出现空穴层，并对空穴层中的氢分布进行了讨论。
It is often assumed only limited amount of amorphous phase could generate in the oxide film of Ni-based alloy with H-participation. However, in this study, the formation of a remarkable amorphous layer on top of the oxide film of Ni-based Alloy 600 (Ni-15.5 Cr-9.4 Fe, wt.%) after oxidizing in high-temperature high-pressure water environment by in-situ H-charging condition is observed. A synergy of the film porosity and P H 2 O/P H 2 is proposed as a plausible mechanism. Cavity layer appeared at the oxide and matrix interface, and the H-distribution are also discussed.