Oxidation and Hot Corrosion Behavior of Plasma-Sprayed MCrAlY-Cr2O3 Coatings
文献类型：期刊论文
| 作者 | Zhang, Tiantian1,2; Huang, Chuanbing1; Lan, Hao1; Du, Lingzhong1; Zhang, Weigang1 |
| 刊名 | JOURNAL OF THERMAL SPRAY TECHNOLOGY
 |
| 出版日期 | 2016-08-01 |
| 卷号 | 25期号:6页码:1208-1216 |
| 关键词 | hot corrosion MCrAlY-Cr2O3 coating oxidation plasma spray |
| ISSN号 | 1059-9630 |
| 英文摘要 | The oxidation and hot corrosion behavior of two atmospheric plasma-sprayed NiCoCrAlY-Cr2O3 and CoNiCrAlY-Cr2O3 coatings, which are primarily designed for wear applications at high temperature, were investigated in this study. The two coatings were exposed to air and molten salt (75%Na2SO4-25%NaCl) environment at 800 A degrees C under cyclic conditions. Oxidation and hot corrosion kinetic curves were obtained by thermogravimetric technique. X-ray diffraction analysis and scanning electron microscopy with energy-dispersive x-ray spectrometry were employed to characterize the coatings' microstructure, surface oxides, and composition. The results showed that both coatings provided the necessary oxidation resistance with oxidation rates of about 1.03 x 10(-2) and 1.36 x 10(-2) mg/cm(2) h, respectively. The excellent oxidation behavior of these two coatings is attributed to formation of protective (Ni,Co)Cr2O4 spinel on the surface, while as-deposited Cr2O3 in the coatings also acted as a barrier to diffusion of oxidative and corrosive substances. The greater presence of Co in the CoNiCrAlY-Cr2O3 coating restrained internal diffusion of sulfur and slowed down the coating's degradation. Thus, the CoNiCrAlY-Cr2O3 coating was found to be more protective than the NiCoCrAlY-Cr2O3 coating under hot corrosion condition. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Materials Science, Coatings & Films |
| 研究领域[WOS] | Materials Science |
| 关键词[WOS] | DEGREES-C ; ENVIRONMENT ; MICROSTRUCTURE ; SUPERALLOY ; COMPONENTS ; ALLOY ; NICR ; HVOF |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000381208200010 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/21284]  |
| 专题 | 过程工程研究所_多相复杂系统国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Lab Particle Sci & Engn, Inst Proc Engn, 1 Beier Tiao, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Tiantian,Huang, Chuanbing,Lan, Hao,et al. Oxidation and Hot Corrosion Behavior of Plasma-Sprayed MCrAlY-Cr2O3 Coatings[J]. JOURNAL OF THERMAL SPRAY TECHNOLOGY,2016,25(6):1208-1216. |
| APA | Zhang, Tiantian,Huang, Chuanbing,Lan, Hao,Du, Lingzhong,&Zhang, Weigang.(2016).Oxidation and Hot Corrosion Behavior of Plasma-Sprayed MCrAlY-Cr2O3 Coatings.JOURNAL OF THERMAL SPRAY TECHNOLOGY,25(6),1208-1216. |
| MLA | Zhang, Tiantian,et al."Oxidation and Hot Corrosion Behavior of Plasma-Sprayed MCrAlY-Cr2O3 Coatings".JOURNAL OF THERMAL SPRAY TECHNOLOGY 25.6(2016):1208-1216. |
入库方式： OAI收割
来源：过程工程研究所
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