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

Abstract

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.

Anti-corrosion properties of bio-inspired surfaces: a systematic review of recent research developments

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The Effect of Cryogenic Treatment Temperature on the Mechanical Properties and Microstructure of 440C Martensitic Stainless Steel

“…The use of stainless steel in the world is increasing due to its advantageous mechanical properties, such as corrosion resistance, low maintenance cost, and high strength [1][2][3] [4]. There are industries that use stainless steel for the same reason, as it is a well-known fact that stainless steel does not require additional treatments such as surface treatment, painting, coating, and others to enhance its corrosion resistance [5][6].…”

Selective Laser Melting and Mechanical Properties of Stainless Steels

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