期刊
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
卷 31, 期 8, 页码 2402-2414出版社
ELSEVIER
DOI: 10.1016/S1003-6326(21)65662-5
关键词
nickel based superalloys; oxidation; hot corrosion; spallation resistance
资金
- Natural Science Foundation of Shandong Province, China [ZR2019MEE107]
- Shandong Jiaotong University Climbing Research Innovation Team Program, China [SDJTC1802]
- PhD Scientific Research Foundation of Shandong Jiaotong University, China [BS2018005]
The addition of Co to nickel-based superalloys with partial replacement of W promoted the formation of chromia scale and decreased the oxidation rate, while also enhancing the adhesion of Al2O3 scale and improving hot corrosion resistance under molten Na2SO4-NaCl salts.
Nickel-based superalloys with and without Co by partial replacement of W were prepared using double vacuum melting. A comparison of the oxidation in air and hot corrosion behaviors under molten 75wt.%Na2SO4+25wt.%NaCl at 900 degrees C were systematically investigated. The results showed that partial replacement of W with Co promoted the formation of chromia scale and consequently decreased the oxidation rate. Besides, the addition of Co also retarded the internal oxidation/nitridation of Al and consequently promoted the growth of Al2O3 scale, which further decreased the scaling rate and improved the adhesion of scale. Moreover, the addition of Co also further improved the hot corrosion resistance under molten Na2SO4-NaCl salts.
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
分享论文
