Corrosion Behavior of Cobalt-Based Superalloys with Tellurium in Molten Salt
Su Yixiang1,2; Liu Jiefang2; Zhang Zhijian2; Shen Nan2; Liu Shiduo2
2018-08
发表期刊RARE METAL MATERIALS AND ENGINEERING
ISSN1002-185X
卷号47期号:8页码:2446-2452
摘要The corrosion behavior in high temperature molten salt of cobalt-based alloy powder with different Te contents that was sintered under non-vacuum environment was investigated in a static 800 +/- 5 degrees C and 75% Na2SO4+25% NaCl. The microstructure, corrosion product morphology and phase composition were investigated by OM, SEM and XRD, respectively. The results show that with the increase of Te mass fraction in cobalt-based alloy, the high-temperature molten salt corrosion rate decreases gradually; when the Te content is about 1.6%, a kind of homogeneous and dense Cr2O3 protection oxide film forms on the surface of the alloy substrate and the new phase (CoTeO3, Fe2TeO5) dispersed in the matrix inhibits Co atoms from diffusing to grain boundaries, which retard alloy matrix element dissolution and improve the hot corrosion performance of the alloy. The corrosion rate of cobalt-based alloy decreases from 4.0483 mg/(cm(2).h) of the Te-free alloy to 0.216 mg/(cm(2).h).
关键词tellurium (Te) cobalt-based alloy high temperature molten salt corrosion
收录类别SCI ; SCIE
语种中文
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号WOS:000444219500027
出版者NORTHWEST INST NONFERROUS METAL RESEARCH
EI入藏号20185106253643
EI主题词Cobalt alloys
EI分类号531 Metallurgy and Metallography - 539.1 Metals Corrosion - 539.2 Corrosion Protection - 545.2 Iron Alloys - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 804.2 Inorganic Compounds - 951 Materials Science
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被引频次[WOS]:0   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符https://ir.lut.edu.cn/handle/2XXMBERH/32522
专题省部共建有色金属先进加工与再利用国家重点实验室
材料科学与工程学院
离退休人员
通讯作者Su Yixiang
作者单位1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China;
2.Lanzhou Univ Technol, Coll Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China
第一作者单位省部共建有色金属先进加工与再利用国家重点实验室;  材料科学与工程学院
通讯作者单位省部共建有色金属先进加工与再利用国家重点实验室;  材料科学与工程学院
第一作者的第一单位省部共建有色金属先进加工与再利用国家重点实验室
推荐引用方式
GB/T 7714
Su Yixiang,Liu Jiefang,Zhang Zhijian,et al. Corrosion Behavior of Cobalt-Based Superalloys with Tellurium in Molten Salt[J]. RARE METAL MATERIALS AND ENGINEERING,2018,47(8):2446-2452.
APA Su Yixiang,Liu Jiefang,Zhang Zhijian,Shen Nan,&Liu Shiduo.(2018).Corrosion Behavior of Cobalt-Based Superalloys with Tellurium in Molten Salt.RARE METAL MATERIALS AND ENGINEERING,47(8),2446-2452.
MLA Su Yixiang,et al."Corrosion Behavior of Cobalt-Based Superalloys with Tellurium in Molten Salt".RARE METAL MATERIALS AND ENGINEERING 47.8(2018):2446-2452.
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