Three different thicknesses of self-lubricated coatings were prepared on galvanized steel sheets with differ- ent surface roughness （Ra）. Performances of the coatings were evaluated by various laboratory tests. Scan...Three different thicknesses of self-lubricated coatings were prepared on galvanized steel sheets with differ- ent surface roughness （Ra）. Performances of the coatings were evaluated by various laboratory tests. Scanning elec- tron microscopy （SEM）, atomic force microscope （AFM）, neutral salt spraying test （NSST）, reciprocating friction and wear test were taken in order to characterize the coatings. Results show that the self-lubricated coating has good corrosion resistance and lubricating property. In 0. 857--1. 629 /~m of Ra value, the relationship between friction co- efficients of the self lubricated steel sheets and the surface roughness of the galvanized steel sheets likes a parabolic curve, and has a peak value of friction coefficient in certain range of Ra. Affected by the hereditary surface topogra- phy of the galvanized steel sheet, dents on the surface of sel^lubricated steel become deeper and larger with the in crease of the surface roughness of the galvanized steel sheets. The influence of the surface roughness of the galvanized steel sheet on the corrosion resistance of the self lubricated coating steel is similar to that on friction coefficient of selPlubricated coatings, like a parabolic curve.展开更多
基金Sponsored by National Natural Science Foundation of China(51071052)National Key Technology Research and Development Program in 12th Five-year Plan of China(2012BAJ13B03)
文摘Three different thicknesses of self-lubricated coatings were prepared on galvanized steel sheets with differ- ent surface roughness （Ra）. Performances of the coatings were evaluated by various laboratory tests. Scanning elec- tron microscopy （SEM）, atomic force microscope （AFM）, neutral salt spraying test （NSST）, reciprocating friction and wear test were taken in order to characterize the coatings. Results show that the self-lubricated coating has good corrosion resistance and lubricating property. In 0. 857--1. 629 /~m of Ra value, the relationship between friction co- efficients of the self lubricated steel sheets and the surface roughness of the galvanized steel sheets likes a parabolic curve, and has a peak value of friction coefficient in certain range of Ra. Affected by the hereditary surface topogra- phy of the galvanized steel sheet, dents on the surface of sel^lubricated steel become deeper and larger with the in crease of the surface roughness of the galvanized steel sheets. The influence of the surface roughness of the galvanized steel sheet on the corrosion resistance of the self lubricated coating steel is similar to that on friction coefficient of selPlubricated coatings, like a parabolic curve.
