热处理工艺对无铅黄铜腐蚀行为的影响  

Effect of Heat Treatment on Corrosion Behavior of Lead-free Brass

作　　者：孙慧[1] 董晟全[1] 梁艳峰[1] 李高宏[1] 

机构地区：[1]西安工业大学材料与化工学院,陕西西安710032

出　　处：《热加工工艺》2012年第4期153-155,共3页Hot Working Technology

基　　金：西安工业大学校长基金资助项目(XAGDXJJ0909);陕西省教育厅专项科研计划资助项目(09JK486)

摘　　要：通过向Cu-Zn二元合金中添加高锌当量的铝、镁、硅元素,采用普通铸造法制备了以β相为基体的无铅黄铜,并对其进行670℃×3h固溶,油淬后进行270℃×2h时效,考察了所制备合金在热处理前后的腐蚀行为。结果表明,热处理态的无铅黄铜腐蚀电流密度与脱锌腐蚀速率减小,24h后的脱锌腐蚀层厚度仅为118μm,耐腐蚀性能良好。A new type of lead-free brass in form of β phase was prepared by the addition of elements of high zinc equivalent（Mg,Al and Si） using ordinary casting method,and then was solid solution treated at 670 ℃ for 3 h,quenched in oil and then aged at 270 ℃ for 2 h.The corrosion behavior of as-cast and heat treated alloys were studied.The results show that the corrosion current density and dezincification corrosion rate of the heat treated alloy decline.And the thickness of the dezincification corrosion layer is 118 μm after 24 h.Heat treatment improves the corrosion resistance of the alloys.

关 键 词：无铅黄铜 热处理 脱锌腐蚀 

分 类 号：TG156.92[金属学及工艺—热处理]