摘要
Ni-Co/MoS 2 composite coatings were prepared by electrodeposition in a Ni-Co plating bath containing nano-sized MoS 2 particles to be co-deposited. The polarization behavior of the composite plating bath was examined on a PAR-273A potentiostat/galvanostat device. The friction and wear behaviors of the Ni-Co/MoS 2 composite coatings were evaluated with UMT-2MT test rig in a ball-on-disk contact mode. The morphologies of the original and worn surfaces of the composite coatings were observed on scanning electron microscope (SEM). It was found that the introduction of MoS 2 nano-particulates in the electrolyte caused the shift towards larger negatives of the reduction potential of the Ni-Co alloy coating, and the co-deposited MoS 2 showed no significant effect on the electrodeposition process of the Ni-Co alloy coating. However, the co-deposited MoS 2 led to changes in the surface morphology and structure of the composite coating as well. Namely, the peak width of the Ni-Co solid solution for the composite coating is broader as compared to that of the Ni-Co alloy coating. The co-deposited MoS 2 particulates were uniformly distributed in the Ni-Co matrix and contributed to increase tribological properties of the Ni-Co alloy coating.
| 源语言 | 英语 |
|---|---|
| 页（从-至） | 6880-6885 |
| 页数 | 6 |
| 期刊 | Applied Surface Science |
| 卷 | 254 |
| 期 | 21 |
| DOI | |
| 出版状态 | 已出版 - 30 8月 2008 |
| 已对外发布 | 是 |