L360钢化学镀Ni-Cu-P在H_(2)S环境中的腐蚀性能研究  

Research on Corrosion Properties of L360 Steel with Electroless Ni-Cu-P Plating in H_(2)S Environment

作　　者：钱熙文 王均[1] 廖丹丹 覃炳朝 QIAN Xiwen;WANG Jun;LIAO Dandan;QIN Bingchao(School of Mechanical Engineering,Sichuan University,Chengdu 610065,China)

机构地区：[1]四川大学机械工程学院,四川成都610065

出　　处：《热加工工艺》2023年第22期15-18,23,共5页Hot Working Technology

基　　金：四川省科技计划项目(2020YFG0095)。

摘　　要：在L360钢基体上化学镀Ni-Cu-P镀层,施镀5 h后获得76μm的镀层,将试样放在H2S环境下分别浸泡4、24、72、120、240、720和1440 h后,采用显微硬度仪和光学接触角测试仪分别检测镀层的维氏硬度和接触角,采用精密天平对试样进行称重并计算腐蚀速率,采用扫描电子显微镜和光学显微镜分析了其表面和截面形貌。结果表明,L360钢化学镀Ni-Cu-P镀层后,维氏硬度由190.25 HV提高到549.78 HV,接触角由95.7°提高到113.47°,疏水性能提高,浸泡1440 h后,腐蚀速率从0.06 mg·cm^(-2)·h^(-1)降低到0.01 mg·cm^(-2)·h^(-1),耐蚀性提高。76μm coating was obtained by electroless Ni-Cu-P plating on L360 steel for 5 h.The samples were immersed in H_(2)S for 4 h,24 h,72 h,120 h,240 h,720 h and 1440 h,respectively.The vickers hardness and contact angle of the coating were measured by microhardness tester and optical contact angle tester respectively.The weight of the samples were measured by a precision balance and the corrosion rates were calculated.The surface and cross-section morphology of the coating were analyzed by scanning electron microscope and optical microscope.The results show that after Ni-Cu-P coating is plated on L360 steel,the Vickers hardness increases from 190.25 HV to 549.78 HV,the contact angle increases from 95.7°to 113.47°,which can improve the hydrophobicity.The corrosion rate decreases from 0.06 mg·cm^(-2)·h^(-1)to 0.01 mg·cm^(-2)·h^(-1),which can improve the corrosion resistance after soaking for 1440 h.

关 键 词：L360钢 Ni-Cu-P镀层 腐蚀速率 耐蚀性 

分 类 号：TG174[金属学及工艺—金属表面处理]