| SI Yi,SONG Ye_li,LI Chang-sheng.Wear Resistant omposite Phosphating[J],37(5):61-63 |
| Wear Resistant omposite Phosphating |
| Received:June 30, 2008 Revised:October 10, 2008 |
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| DOI： |
| KeyWord:Phosphating Composite phosphate coating Wear resistance |
| Author | Institution |
| SI Yi |
School of Materials Science and Engineering, Jiangsu University, Zhenjiang , China |
| SONG Ye_li |
Xuchang Vocational Technical College, Xuchang , China |
| LI Chang-sheng |
School of Materials Science and Engineering, Jiangsu University, Zhenjiang , China |
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| Abstract: |
| Compared with traditional erosion resistant phosphating, a kind of wear resistant phosphating was studied to improve the wear resistance of phosphate coating. Wear resistant phosphate coating can be used as a solid lubrication film. A composite phosphating solution was developed according to the mechanism of phosphating film forming. The effect of process parameters on phosphate coating were investigated including various metal ions, temperature, time, acid rate etc. Wear resistance of composite phosphate coating was investigated too. It can be found from the testing results that the best phosphating process is Zn( N03 ) 2 20g/L,Mn( H2P04 ) 2 60g/L, Mn( N03 ) 2 15 g/L, Ni( N03 ) 2 2 g/L,Ca( N03 ) 2 2 g/L, tartaric acid lg/L, some addition, 60-70℃ , 10-15 min. Composite phosphate coating is a black film with fine acicular crystal. Surface-adjust before phosphating can improve the quality of phosphate coating. Composite phosphate coating significantly decreases the friction coefficient from 0. 8 t0 0. land increases the wear resistance of materials. |
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