Effect of phosphoric acid and perchloric acid on Electropolishing of additive manufactured 17-4 PH stainless steel and its characterization

Chia Yu Lee, Ming Der Ger, Jung Chou Hung, Po Jen Yang, Yi Cherng Ferng, Kuo Kuang Jen, Shun Yi Jian

Research output: Contribution to journalArticlepeer-review

Abstract

Additive manufactured 17-4 PH stainless steel is widely used and is the material for this study. The processing of the work piece for additive manufacturing is difficult and the surface is very rough. The surface roughness is reduced by electropolishing using phosphoric acid and perchloric acid solutions, in order to compare their efficiency. Surface morphology is determined using SEM. A 3D white light interferometer measures the surface roughness and electrochemical testing is used to determine corrosion resistance after electropolishing.

Original languageEnglish
Article number220315
JournalInternational Journal of Electrochemical Science
Volume17
DOIs
StatePublished - 2022

Keywords

  • 17-4 PH stainless steel
  • Additive Manufacturing
  • Electropolishing
  • Surface roughness

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