不同热处理态TP2铜的冲刷腐蚀性能研究  

Erosion Corrosion Properties of TP2 Copper After Different Heat Treatments

作　　者：肖来荣[1,2] 王森[1] 赵小军[1,2] 杨烨崧[1] 任鹏禾 余华丽 彭振武 蔡圳阳 XIAO Lairong;WANG Sen;ZHAO Xiaojun;YANG Yesong;REN Penghe;YU Huali;PENG Zhenwu;CAI Zhenyang(School of Materials Science and Engineering,Central South University,Changsha 410083,Hunan,China;Key Laboratory of Nonferrous Materials Science and Engineering,Ministry of Education,Changsha 410083,Hunan,China)

机构地区：[1]中南大学材料科学与工程学院,湖南长沙410083 [2]有色金属材料科学与工程教育部重点实验室,湖南长沙410083

出　　处：《矿冶工程》2023年第4期158-163,共6页Mining and Metallurgical Engineering

基　　金：中车青岛四方机车车辆股份有限公司科研项目(SF/JS⁃梁字⁃2020⁃256);国防基础科研计划重点项目(2020208B020)。

摘　　要：对不同热处理态(硬态、软态)TP2铜进行不同流速的3.5%NaCl溶液冲刷腐蚀实验,测试了TP2铜的冲刷腐蚀速率,表征了冲刷腐蚀240 h后的腐蚀形貌及腐蚀产物,探讨了TP2铜的冲刷腐蚀机理。结果表明,流动的腐蚀介质加快了TP2铜的腐蚀速率;在相同流速条件下腐蚀240 h后,软态TP2铜的腐蚀速率大于硬态TP2铜;高流速下TP2铜经冲刷腐蚀240 h后的表面腐蚀形貌主要呈沟壑状,形成的主要腐蚀产物为Cu_(2)O。Experiments of erosion corrosion with 3.5%NaCl solution at different flow rates were performed for TP2 copper after different heat treatment(hard and soft states),and the erosion corrosion rates of TP2 copper were tested.The morphology and products after 240 hours of corrosion were characterized,and the mechanism of erosion and corrosion for TP2 copper was also discussed.The results show that flowing medium in corrosion test accelerates the corrosion rate of TP2 copper.The soft TP2 copper presents a higher corrosion rate,compared to hard TP2 copper,after 240 hours of corrosion at the same flow rate.And after 240 hours of erosion corrosion at a higher flow rate,TP2 copper has its surface morphology predominated by gully⁃like structure and a product of Cu_(2)O is generated after corrosion.

关 键 词：TP2铜 冲刷腐蚀 腐蚀速率 晶间腐蚀 

分 类 号：TB302[一般工业技术—材料科学与工程]