Abstract
The relationship between surface treatment and corrosion of 316L stainless steel fabricated by selective laser melting (SLM 316L SS) was investigated by microstructural characterization and electrochemical tests. Sandblasting can remove the spheroidized particles and pores to inhibit the formation of corrosion cracks on the surface of the SLM 316L sample. The removal of original defects in the SLM 316L steel by sandblasting can improve its surface quality and corrosion resistance. Thus, a three-step process, including sandblasting, oxide removal and chemical mechanical polishing, is an effective method of surface treatment to improve the surface quality of SLM 316L SS.
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