| Structure characterization and tribological properties of thick chromium coating electrodeposited from a Cr(III) electrolyte | |
| Department | 固体润滑国家重点实验室 |
Liang AM(梁爱民)1,2 ; Ni LW(倪利炜)1,3; Liu Q(刘乔)1,2; Zhang JY(张俊彦)1; Zhang JY(张俊彦)
| |
| 2013 | |
| Source Publication | Surface & Coatings Technology
 |
| ISSN | 0257-8972 |
| Volume | 218Pages:23-29 |
| Abstract | Uniform and flat thick Cr coating (CR3 coating) was electrodeposited from a Cr(III) electrolyte containing chromium chloride and urea under the optimized process conditions. Themicrostructure of the coating and its tribological properties under various loads was examined. Furthermore, the performance comparison of the CR3 coating with the hard Cr coating (CR6 coating) fabricated by conventional Cr(VI) electrodepositing process, and the heat-treated thick Cr coating (CR3H coating) fromthe sameCr(III) electrolyte,was performed. The result shows that the main phase of the CR3 coating is amorphous,with the nanocrystals of body-centered cubic structure chromium (bcc Cr) and graphite embedded in it. The existence of the nanocrystals of bcc Cr and graphite in Cr coatings is probably the common feature of all amorphous Cr coatings fromCr(III) electrolytes. In the scope of the bearable load of the CR3 coating, its tribological properties were a little worse than those of the CR6 coating. After annealing at 180 °C for 2 h, the wear resistance of the coating was improved to a certain extent. We found the interfacial carbon film between the CR3 coating and steel substrate, which caused poor bonding and consequently insufficient load-bearing capability of the coating. There is a need to further improve the load-bearing capability andwear resistance of the CR3 coating. In viewof the great environmental advantage of Cr(III) electrodeposition process and no difference ofwear resistance in order ofmagnitude between the CR3 coating and CR6 coating, Cr(III) electrodeposition technology is still a developing direction with promising prospect. |
| Keyword | Trivalent Chromium Electrodeposition Chromium Coating Nanocrystal Graphite Wear Resistance |
| DOI | 10.1016/j.surfcoat.2012.12.021 |
| Funding Organization | the Natural Science Foundation of Gansu Province (grant no. 096RJZA127) |
| Indexed By | SCI |
| If | 2.199 |
| Language | 英语 |
| Funding Project | 纳米润滑研究组 |
| compositor | 第一作者单位 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/4897 |
| Collection | 固体润滑国家重点实验室（LSL） |
| Corresponding Author | Zhang JY(张俊彦) |
| Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.Northwest A&F Univ, Coll Sci, Yangling 712100, Peoples R China |
| Recommended Citation GB/T 7714 | Liang AM,Ni LW,Liu Q,et al. Structure characterization and tribological properties of thick chromium coating electrodeposited from a Cr(III) electrolyte[J]. Surface & Coatings Technology,2013,218:23-29. |
| APA | Liang AM,Ni LW,Liu Q,Zhang JY,&张俊彦.(2013).Structure characterization and tribological properties of thick chromium coating electrodeposited from a Cr(III) electrolyte.Surface & Coatings Technology,218,23-29. |
| MLA | Liang AM,et al."Structure characterization and tribological properties of thick chromium coating electrodeposited from a Cr(III) electrolyte".Surface & Coatings Technology 218(2013):23-29. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Structure characteri（1201KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment