The aim of this study is to consider the effect hydrogen on dezincification behavior of Cu-Zn alloys. The investigations include microstructural observations with scanning electron microscope and chemical composition analysis with energy dispersive spectrometer. The dezincification layer was found to occur in high pressure hydrogen atmosphere, not in air atmosphere. In addition, the layers penetrated into the inner side along the grain boundaries in the case of hydrogen condition. The shape of the dezincification layers was porous because of Zn dissolution from the α or β phase. In the case of stress corrosion cracks formed in the Cu-Zn microstructure, the dezincification phenomenon with porous voids was also accompanied by grain boundary cracking.

• 최병학(강릉원주대학교 신소재금속공학과) | Byung Hak Choe Corresponding author
• 이범규(강릉원주대학교 신소재금속공학과) | Bum Gyu Lee
• 장현수(강릉원주대학교 신소재금속공학과) | Hyeon Su Jang
• 전우일(엑셀랩) | Woo Il Jeon
• 박용성(엑셀랩) | Yong Sung Park
• 임재균(엑셀랩) | Jae Kyun Lim
• 이진희(SK건설 화공 TECH 본부) | Jin Hee Lee
• 박찬성(국립과학수사연구원 법안전과) | Chan Sung Park
• 김진표(국립과학수사연구원 법안전과) | Jin Pyo Kim