微观组织对铜合金腐蚀性能的影响  

Effect of Microstructure on Corrosion Behaviour of Cu-alloys

作　　者：孔小东[1] 田志强[2] 林育峰[1] 

机构地区：[1]海军工程大学理学院,武汉430033 [2]武汉军械士官学校枪械系,武汉430075

出　　处：《装备环境工程》2015年第6期1-9,共9页Equipment Environmental Engineering

摘　　要：目的研究T2,Tu P,B10,H62等铜合金在模拟海水中的腐蚀行为,重点探讨微观组织与夹杂物对腐蚀特征的影响。方法采用线性极化、电化学阻抗、挂片试验和微观分析等测试手段。结果比较四种铜合金的腐蚀速度、点蚀倾向,得到铜合金腐蚀性能差异的原因。结论 H62,B10的腐蚀速度小于T2,Tu P;H62,B10的点蚀倾向性明显大于T2,Tu P;不同铜合金的微观组织及夹杂物差异是铜合金腐蚀性能不同的重要原因。Objective To study the corrosion behaviors of T2, Tu P, B10, H62 alloys in seawater, focusing on influences of micro structure and occluded materials on corrosion characteristics. Methods Certain tests were used such as immersion,linear polarization,electrochemical impedance and microstructure analysis. Results The corrosion velocity and pitting susceptibility were compared and analysized for the four Cu-alloys; and the causes for differneces in corrosivity of Cu-alloys were obtained. Conclusion The mean corrosion velocity of B10 and H62 was smaller than that of T2 and Tu P; and the pitting susceptibility of B10 and H62 was more than that of T2 and Tu P. The corrosivity of different copper alloys was different because of their different microstructures and inclusions.

关 键 词：铜合金 线性极化 交流阻抗 海水腐蚀 微观分析 

分 类 号：TJ04[兵器科学与技术—兵器发射理论与技术] TG174.45[金属学及工艺—金属表面处理]