期刊
CORROSION SCIENCE
卷 187, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2021.109480
关键词
Nickel; Superalloys; Modeling studies; AFS; Oxidation; High temperature corrosion
资金
- National Key Research and Development Program [2017YFA0402803, 2016YFB0700404]
- Youth Innovation Promotion Association CAS [2020260]
- Science and technology innovation 2025 Key Project of Ningbo City [2019B10084]
- National Natural Science Foundation of China [51601213, 52071331]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDA02004210]
The study demonstrates that doping zirconium into Ni-28W-6Cr alloys can significantly improve the oxidation resistance of the alloy by reducing the oxidation rate and inner oxide thickness, as Zr charged +4 prefers to segregate in the inner NiWO4, inhibiting oxygen vacancies formation and reducing oxygen diffusion pathways.
In this work, an approach to improve the oxidation resistance of a Ni-based alloy was proposed by doping a high valence metal element into the oxides. Oxidation kinetics of Ni-28W-6Cr alloys with 0-0.2 wt.% Zr at 850 degrees C show that Zr can significantly decrease the oxidation rate of the alloy and the thickness of the inner oxide. Zr charged +4 prefers to segregate in the inner NiWO4 by replacing Ni2+, which inhibits the formation of oxygen vacancies and reduces the oxygen diffusion pathways, improving the oxidation resistance of the alloy.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据