Oxidation Behaviors and Degradation Properties of Aluminide Coated Stainless Steel at High Temperature

Hwang, Cheol Hong; Lee, Hyo Min; Oh, Jeong Seok; Hwang, Dong Hyeon; Hwang, Yu Seok; Lee, Jong Won; Choi, Jeong Mook; Park, Joon Sik

doi:10.4150/kpmi.2021.28.5.396

Cited by 2 publications

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“…electropolishing of stainless steel has long been used in many industries to achieve perfectly smooth surfaces. Recently, as the degree of integration of semiconductor circuits has increased, research on manufacturing and high-purity uhP (ultra high Purity) 316l stainless steel is being accelerated [1][2][3][4][5]. There are many variables in the electropolishing process that affect the surface roughness of the workpiece.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Electropolishing Characteristics of 316L Stainless Steel Tube in Contaminated Electrolyte

Jung,

Yang,

Choi

et al. 2024

Archives of Metallurgy and Materials

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In the electropolishing process, the polishing quality of the metal surface varies according to the contamination of the electrolyte. In this study, the electrolyte was evaluated according to the usage time, and the effect of each factor on electropolishing was investigated. As the electrolyte is contaminated, the concentration of metal ions in the electrolyte increases and the ion conductivity decreases. In addition, the pH and specific gravity of the electrolyte increase due to the metal sludge formed as the metal ion concentration increases. When the electrolyte usage time was more than 5 days, many scratches remained on the surface of 316L stainless steel, and relatively high surface roughness was measured. The surface roughness improvement rate compared to the initial specimen was 30% for the unused electrolyte, 26% on the 3rd day, 19% on the 5th day, and 17.5% on the 13th day. Since the low current density due to electrolyte contamination causes a decrease in polishing efficiency, initial scratches on the metal surface still exist on the polished surface. Therefore, it is necessary to manage the electrolyte to maintain the quality of electropolishing.

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