High temperature oxidation and hot corrosion behaviors of Ti2AlNb alloy at 923 K and 1023 K

被引：37

作者：

Dai, Jingjie ^{[1
,2
,3
]}

Sun, Caixia ^{[1
,2
,3
]}

Wang, Amin ^{[1
,2
,3
]}

Zhang, Hongxia ^{[1
,2
,3
]}

Li, Shouying ^{[1
,2
,3
]}

Zhang, Hailong ^{[1
,2
,3
]}

机构：

[1] Qingdao Binhai Univ, Key Lab New Metall Funct Mat & Adv Surface Engn U, Qingdao 266555, Shandong, Peoples R China

[2] Qingdao Binhai Univ, Qingdao Engn Res Ctr New Metall Funct Mat, Qingdao 266555, Shandong, Peoples R China

[3] Qingdao Binhai Univ, Sch Mech & Elect Engn, Qingdao 266555, Shandong, Peoples R China

来源：

CORROSION SCIENCE | 2021年 / 184卷

关键词：

High temperature oxidation; Hot corrosion; RESISTANCE;

D O I：

10.1016/j.corsci.2021.109336

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High temperature oxidation and hot corrosion behaviors of a Ti2AlNb alloy (Ti2AlNb) at 923 K and 1023 K for 1000 h were investigated, using mixtures of sodium chloride (NaCl) and sodium sulfate (Na2SO4) as the hot corrosion media. Mass gains of oxidation and mass changes of hot corrosion of the alloy were measured. Surface morphologies, cross-section structure and products of the alloy after oxidation and hot corrosion were examined and analyzed by scanning electron microscopy (SEM), X-ray diffraction (XRD) and energy dispersive X-ray spectroscopy (EDS). The alloy exhibited good high temperature oxidation resistance and hot corrosion resistance at 923 K over a period of 1000 h. The alloy was not resistant to oxidation and hot corrosion at 1023 K over the same period. The higher the content of NaCl in the mixed salt medium, the more intense was the hot corrosion of the alloy.

引用

页数：9

共 19 条

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[2]

Barin I., 1973, THERMOCHEMICAL PROPE

[3]

Cai Jian-ming, 2014, Journal of Aeronautical Materials, V34, P27

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