不锈钢腐蚀速率表征方法比较  

Comparison of Stainless Steel Corrosion Rate Characterization Methods

作　　者：费迎红 曲淑英[1] 于顺洋[2] 于洪 Fei Yinghong;Qu Shuying;Yu Shunyang;Yu Hong(College of Civil Engineering,Yantai University,Yantai 264005,China;Yantai Coastal Zone Research Institute,Chinese Academy of Sciences,Yantai 264003,China)

机构地区：[1]烟台大学土木工程学院,山东烟台264005 [2]中国科学院烟台海岸带研究所,山东烟台264003

出　　处：《山东化工》2022年第23期158-161,共4页Shandong Chemical Industry

摘　　要：常用的腐蚀速率测量方法有极化曲线、电化学阻抗等,随着微电极技术和测量技术的发展,近年来兴起的微区扫描振动电极技术能够实时观测和定量腐蚀过程。本文以304不锈钢在NaCl介质中添加不同浓度的钨酸钠的腐蚀行为为研究对象,通过传统的动电位极化曲线以及电化学阻抗谱分析了早期腐蚀动力学行为,进一步开展基于扫描振动电极技术(SVET)的分析表征不锈钢的腐蚀速率,通过扫描得到各个点位的腐蚀电流密度。通过对比得知,扫描振动电极技术测量结果更加实时精确,可以为腐蚀研究提供重要的技术支持。The commonly used corrosion rate measurement methods include polarization curves,electrochemical impedance,etc.With the development of microelectrode technology and measurement technology,the micro-area scanning vibrating electrode technology that has emerged in recent years can observe and quantify the corrosion process in real time.In this paper,the corrosion behavior of 304 stainless steel with different concentrations of sodium tungstate in NaCl medium was studied.The early corrosion kinetics behavior was analyzed by traditional potentiodynamic polarization curve and electrochemical impedance spectroscopy.The corrosion rate of stainless steel was further characterized by scanning vibrating electrode technique(SVET).The corrosion current density of each point was obtained by scanning.By comparison,the measurement results of scanning vibration electrode technology are more real-time and accurate,which can provide important technical support for corrosion research.

关 键 词：304不锈钢 腐蚀 电化学 腐蚀速率 SVET 

分 类 号：O657.1[理学—分析化学]