利用电化学阻抗谱研究了方解石及三聚磷酸铝环氧涂层的耐蚀性能 ,并提出了它们的作用机理 .结果表明 ,方解石只起体质颜料作用 ,不具备缓蚀性能 ;而三聚磷酸铝因在钢基表面作用形成致密的保护膜则表现出优良的缓蚀性能 . The corrosion resistance of calcite and aluminum tripolyphosphate epoxy coatings was studied by electrochemical impedance spectroscopy (EIS), and the mechanism of their corrosion resistance was also discussed. The results show that calcite only acts as an extender and does not have corrosion inhibition properties. However, Aluminum due to the role of the steel surface to form a dense protective film showed excellent corrosion inhibition.