微米空间分辨度的电化学方法,主要包括多种扫描微电极技术,并用于研究金属表面和金属/溶液界面电化学不均一性及局部腐蚀破坏过程.结果表明,这些空间分辨电化学方法的发展及应用,使得人们对金属表面和金属/溶液界面电化学不均一性,特别是金属局部腐蚀发生、发展过程机理的认识得以深化.The electrochemical inhomogeneities at interface of metal/solution play an important and often controlling role in localized corrosion of metals.The traditional electrochemical techniques involving potential, current density or AC impedance measurements over bulk specimens can only provide average and whole information.It is necessary to develop in situ imaging techniques for further characterizing electrochemical inhomogeneities at the interface of metal/solution of localized corrosion system.The eletrochemical techniques with spatial resolution, including scanning single micro electrode, scanning double micro electrodes and scanning micro chemical probes have been reviewed.The effects of the electrochemical inhomogeneities on the corrosion behavior and mechanism of various localized corrosion of metals have been further understood by appropriately using these new electrochemical techniques.国家自然科学基金资助项
