双相不锈钢在磷酸中的腐蚀行为研究  

Effect of Corrosion Behavior of Duplex Stainless Steel in Phosphoric Acid

作　　者：张丽虹[1] 张帅[1] 刘成斌[1] 向嵩[1,2] 

机构地区：[1]贵州大学材料与冶金学院,贵州贵阳550025 [2]贵州省材料结构与强度重点实验室,贵州贵阳550025

出　　处：《热加工工艺》2014年第16期99-101,共3页Hot Working Technology

基　　金：贵州省贵州大学创新创业训练计划项目--创新2012(001);贵州省优秀青年科技人才项目(201315);贵州省科技厅重大专项(20106007)

摘　　要：采用极化曲线法研究了双相不锈钢在磷酸溶液中的腐蚀行为。结果表明:随磷酸浓度增大,双相不锈钢的耐蚀性先减弱后增强,腐蚀电流密度先增大后减小;随溶液温度升高,双相不锈钢的耐蚀性相对于常温下的普遍降低,其腐蚀主要受电化学反应控制。By electrochemical polarization curve, the duplex stainless steel＇s corrosion behaviors in phosphoric acid were analyzed. The results show that as the concentration of phosphoric acid increasing, the stain resistance declines and then rises,and the corrosive ampere density increases then decreases. As the temperature increasing, the stain resistance of duplex stainless steel is generally lower than that of it at room temperature.The corrosion is controlled under electrochemical reaction.

关 键 词：双相不锈钢 磷酸溶液 极化曲线 

分 类 号：TG113.231[金属学及工艺—物理冶金]