인발률에 따른 자동차 냉각 배관용 Al 합금의 부식 특성에 관한 연구

• Published in: 대한금속·재료학회지, 46(8) Vol. 46; no. 8; pp. 489 - 494
• Main Authors: 박병준, Byung Joon Park, 김정구, Jung Gu Kim, 안승호, Seung Ho Ahn, 곽동호, Dong Ho Kwak, 손현수, Hyun Soo Sohn
• Format: Journal Article
• Language: Korean
• Published: 대한금속재료학회 01.09.2008; 대한금속·재료학회
• Subjects: 3003 Al alloy; corrosion resistance; drawing rate; EIS; potentiodynamic polarization test; 재료공학
• ISSN: 1738-8228; 2288-8241

The effect of drawing rate on the electrochemical properties of 3003 Al alloys in 5 wt.% NaCl solution was investigated by electrochemical techniques (potentiodynamic polarization test, potentiostatic polarization test, electrochemical impedance spectroscopy (EIS)) and surface analyses (OM, SEM, EDS). Four kinds of automotive pipe materials were prepared (raw material, drawing rate = 5, 10, 15%). As the drawing rate of Al alloy tube increased, the pitting corrosion resistance increased due to the enrichment of Al oxides on the surface.