Corrosion Behavior of an Abradable Seal Coating System
文献类型：期刊论文
| 作者 | Zhang, Feng1,2; Xu, Cunguan3; Lan, Hao1; Huang, Chuanbing1; Zhou, Yang1; Du, Lingzhong1; Zhang, Weigang1 |
| 刊名 | JOURNAL OF THERMAL SPRAY TECHNOLOGY
 |
| 出版日期 | 2014-08-01 |
| 卷号 | 23期号:6页码:1019-1028 |
| 关键词 | abradable seal coating galvanic corrosion localized corrosion salt spray corrosion thermal spray |
| ISSN号 | 1059-9630 |
| 其他题名 | J. Therm. Spray Technol. |
| 中文摘要 | A novel NiTi/BN composite abradable coating and two traditional Ni/C and Ni/BN coatings were manufactured with NiAl as the bond layer using thermal spray technology and their corrosion behaviors were investigated. In salt spray corrosion testing of the Ni/BN coating, defective sites of the metal matrix were corroded preferentially. Simulated occlusion experiments and electrochemical tests indicated that migration of ions resulted in pH decrease and Cl- enrichment in defects, and a more aggressive electrolyte led to a decrease of the corrosion potential of the metal inside defects but an increase of the corrosion current density, representing an autocatalytic corrosion process. Moreover, galvanic corrosion between the top and bond coatings of the abradable system was studied via the electrochemical technique. The results showed that, for the NiTi/BN, Ni/BN, and Ni/graphite coatings with a NiAl bond coating, current flow was generated between the anode and cathode. The NiTi/BN coating acted as the cathode due to its passivation, while the Ni/BN and Ni/graphite coatings acted as the anode because of their lower corrosion potential compared with the NiAl coating. The anode suffered serious corrosion damage due to galvanic corrosion, while the cathode corroded only slightly. |
| 英文摘要 | A novel NiTi/BN composite abradable coating and two traditional Ni/C and Ni/BN coatings were manufactured with NiAl as the bond layer using thermal spray technology and their corrosion behaviors were investigated. In salt spray corrosion testing of the Ni/BN coating, defective sites of the metal matrix were corroded preferentially. Simulated occlusion experiments and electrochemical tests indicated that migration of ions resulted in pH decrease and Cl- enrichment in defects, and a more aggressive electrolyte led to a decrease of the corrosion potential of the metal inside defects but an increase of the corrosion current density, representing an autocatalytic corrosion process. Moreover, galvanic corrosion between the top and bond coatings of the abradable system was studied via the electrochemical technique. The results showed that, for the NiTi/BN, Ni/BN, and Ni/graphite coatings with a NiAl bond coating, current flow was generated between the anode and cathode. The NiTi/BN coating acted as the cathode due to its passivation, while the Ni/BN and Ni/graphite coatings acted as the anode because of their lower corrosion potential compared with the NiAl coating. The anode suffered serious corrosion damage due to galvanic corrosion, while the cathode corroded only slightly. |
| 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] | ELECTROCHEMICAL-BEHAVIOR ; LOCALIZED CORROSION ; GALVANIC CORROSION ; CHLORIDE SOLUTION ; STEEL ; NI ; ALLOY ; CELLS ; RESISTANCE ; MECHANISM |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000339882100014 |
| 公开日期 | 2014-08-29 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/11336]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100049, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Shanghai Elect Power Generat Equipment Co Ltd, Shanghai Turbine Plant, Shanghai 200240, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Feng,Xu, Cunguan,Lan, Hao,et al. Corrosion Behavior of an Abradable Seal Coating System[J]. JOURNAL OF THERMAL SPRAY TECHNOLOGY,2014,23(6):1019-1028. |
| APA | Zhang, Feng.,Xu, Cunguan.,Lan, Hao.,Huang, Chuanbing.,Zhou, Yang.,...&Zhang, Weigang.(2014).Corrosion Behavior of an Abradable Seal Coating System.JOURNAL OF THERMAL SPRAY TECHNOLOGY,23(6),1019-1028. |
| MLA | Zhang, Feng,et al."Corrosion Behavior of an Abradable Seal Coating System".JOURNAL OF THERMAL SPRAY TECHNOLOGY 23.6(2014):1019-1028. |
入库方式： OAI收割
来源：过程工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。