A Study on Localized Corrosion Behavior of the Steel Rebar and STM Aided Scanning Micro-Electrode Technique

Abstract

钢筋在混凝土中的腐蚀破坏是导致钢筋混凝土结构过早失效的最主要原因,不仅造成巨大经济损失,还给人民生命安全带来重大隐患。钢筋混凝土腐蚀破坏过程是一个典型的复杂体系,亟需发展各种先进、适用的腐蚀电化学研究方法。钢筋在侵蚀性环境中腐蚀的发生具有不均匀性及动态性等特点,实现金属腐蚀活性位定点高空间分辨度的检测,实时跟踪腐蚀活性点的发生、发展过程,对于探明钢筋腐蚀发生、发展过程机理具有重要科学意义,但也面临极大难度和挑战。随着腐蚀电化学研究的不断发展,原有传统的技术手段已不能满足于对复杂腐蚀体系的深入研究,研发新的腐蚀研究技术,特别是局部腐蚀研究中腐蚀活性位定点测试的新方法新技术是腐蚀研究的一个关键。基...Corrosion of steel rebar in concrete is the main cause inducing degradation of reinforced concrete structures, which has brought serious problems of safety and durability, and resulted in huge economic losses in society. It is an urgent task to develop some advanced and suitable electrochemical techniques for studying the corrosion of rebar in concrete which is a typical complex system. Meanwhile,...学位:理学博士院系专业:化学化工学院化学系_物理化学(含化学物理)学号:2052007015362

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