硬质合金钝化与伪钝化行为的研究进展

Advance in the Study of Passivation and Pseudopassivation Behaviours of Cemented Carbides

极化曲线可以反映腐蚀动力学过程的细节,是研究材料腐蚀行为的重要手段。本文以极化曲线为重点,对硬质合金的钝化与钝化行为的研究成果进行了综述,内容包含了WC-Co、WC-Co-Cr、WC-Ni-Cr、WC-Ni-Co-Cr等系列硬质合金的钝化或伪钝化行为的研究及钝化膜的形成与生长的研究。

Polarization curve can reflect the details of corrosion dynamic process. So it is the major approach in studying the corrosion behaviors of materials. This paper summarizes researching achievements in passivation and pseudopassivation behaviours of cemented carbides by focusing on polarization curve. It ccvers the study in passivation and pseudopassivation behaviours of series of cemented carbide, including WC-Co, WC-Co-Cr, WC-Ni-Cr, WC-Ni-Co-Cr etc., as well as the study in the formation and growth of passiva- tion film.