ALBC3 합금의 해수 내 전기화학적 특성에 미치는 쇼트피닝 분사압력의 영향

• Published in: Biuletyn Uniejowski Vol. 47; no. 1; pp. 25 - 32
• Main Authors: 한민수(Min-Su Han), 임명환(Myeong-Hwan Im), 김성종(Seong-Jong Kim)
• Format: Journal Article
• Language: Korean
• Published: 한국표면공학회 2014
• Subjects: 기계공학; Corrosion characteristics; Shot peening; ALBC3 alloy; Projection pressure; Seawater
• ISSN: 1225-8024; 2299-8403; 2288-8403
• DOI: 10.5695/JKISE.2014.47.1.025

The effects of shot peening pressure on electrochemical and surface morphological characteristics of ALBC3 alloy were investigated in this work. The surface hardness of ALBC3 alloy was improved by shot peening process under all shot peening pressures between 2 and 5 bar, and the hight value of surface hardness was observed to be about 420 Hv at 4 bar of the shot peening pressure. The shot peened surface presented very rough surface due to shot ball collision. The result of anodic potentiodynamic polarization in seawater revealed that there is no significant difference between the shot peened and non-shot peened specimen in terms of corrosion characteristics. Therefore, the optimum projection pressure is determined to be 4 bar.