Lanzhou University of Technology Institutional Repository (LUT_IR)
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 |
ISSN | 1002-185X |
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 |
引用统计 | |
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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