Corrosion Protection of Injection Molded Porous 440C Stainless Steel by Electroplated Zinc Coating

Coatings

Mika Suvanto¹  Matti Kultamaa¹  Jarkko J. Saarinen¹  Kari Mönkkönen² 

[1] Department of Chemistry, University of Eastern Finland, P.O. Box 111, FI-80101 Joensuu, Finland;Karelia University of Applied Sciences, FI-80200 Joensuu, Finland;

关键词: corrosion protection;    metal injection molding;    stainless steel;    440C;    porous metal;    zinc electroplating;   

DOI  :  10.3390/coatings11080949

来源: DOAJ

【 摘 要 】

Zinc electroplating was used to enhance corrosion resistance of porous metal injection molded 440C stainless steel. Controlled porosity was achieved by the powder space holder technique and by using sodium chloride as a space holder material. The internal pore structure of porous 440C was deposited by zinc using electroplating with three different electrolytes of zinc acetate, zinc sulfate, and zinc chloride. Our results show that all zinc depositions on porous 440C samples significantly improved corrosion resistance. The lowest corrosion was observed with zinc acetate at 30 wt.% porosity. The developed zinc coated porous 440C samples have potential in applications in corrosive environments.

【 授权许可】

Unknown