| Abstract: |
300M steel is one of typical materials for aviation applications, such as landing gear and flap & slat track. Normally, HVOF WC10Co4Cr Coatings is one of environment friendly technologies for corrosion protection of 300M. In this paper, the WC10Co4Cr coatings were prepared by different conditions HVOF processing on 300M. And their corrosion performance has been estimated by neutral salt fog test (ASTM B117). The results indicate that the porosity get larger than original value, because of dissolution of bonding phases.If the porosity is less than 1%, there are no corrosion products in the interface between WC10Co4Cr coatings and 300M substrate, after 2000h neutral salt fog test. So the coatings by HVOF has a good corrosion resistance.
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