| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 614400 | Tribology International | 2015 | 8 Pages |
Abstract
Spray-dried mullite powder was plasma sprayed onto steel substrates to form mullite coating. The microstructure of mullite coating and its tribological properties coupled with Si3N4 ball under dry sliding as well as water and hydrochloric acid solution were investigated. Results indicate that mullite coating exhibits high porosity and retains an amorphous phase. The mullite coating-Si3N4 exhibits greatly reduced coefficient of friction under HCl solution, due to the boundary lubrication of the hydrated silica layer and the hydrodynamic lubrication of the acid solution. Moreover, since the wedging action of water, the mullite coating has the highest specific wear rate under water environment.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
Shuangjian Li, Xing Xi, Guoliang Hou, Yulong An, Xiaoqin Zhao, Huidi Zhou, Jianmin Chen,