有色金属科学与工程2025，Vol.16Issue(4)：585-597,13.DOI:10.13264/j.cnki.ysjskx.2025.04.010
Co、P元素添加对Cu-15Ni-8Sn合金耐腐蚀性和高温抗氧化性能的影响
Influence of the corrosion resistance and high temperature oxidation resistance of Cu-15Ni-8Sn alloy with Co or P additions
摘要
Abstract
The influence of trace additions of Co or P elements on the corrosion resistance and high-temperature oxidation resistance of Cu-15Ni-8Sn alloy was investigated using scanning electron microscopy(SEM),X-ray diffraction(XRD),and electrochemical testing methods.The results indicate that adding of trace amounts of Co enhances the corrosion resistance of the Cu-15Ni-8Sn alloy in 3.5%NaCl solution.In contrast,adding P deteriorates the alloy's corrosion resistance.This phenomenon is closely related to the formation of second phases at grain boundaries.During the corrosion process,these second phases act as cathodes for galvanic corrosion,participating in the anodic dissolution of the alloy matrix,leading to localized corrosion.The exacerbation of localized corrosion also results in the detachment of second phases,further exacerbating corrosion.Additionally,during prolonged oxidation at 500℃,the weight gain of the three alloy compositions follows a parabolic trend.The addition of trace Co does not affect the oxidation resistance of Cu-15Ni-8Sn,whereas the addition of trace P deteriorates the oxidation resistance of the alloy.This is attributed to the low adhesion strength of the oxide products formed in Cu-15Ni-8Sn-0.2P alloy,leading to the formation of voids,surface blistering,and cracking,thereby accelerating the oxidation behavior of the alloy.关键词
Cu-15Ni-8Sn合金/耐腐蚀性能/抗氧化性能/微合金化Key words
Cu-15Ni-8Sn alloy/corrosion resistance performance/antioxidant performance/microalloying分类
矿业与冶金引用本文复制引用
胡阳,钟皓,汤焜,杨喜明,郭诚君,杨斌..Co、P元素添加对Cu-15Ni-8Sn合金耐腐蚀性和高温抗氧化性能的影响[J].有色金属科学与工程,2025,16(4):585-597,13.基金项目
国家自然科学基金资助项目(52361008) （52361008）
江西理工大学高层次人才科研启动基金资助项目(205200100570) （205200100570）
江西理工大学大学生创新创业训练资助项目(202210407002) （202210407002）
