用多次扫描电位法研究了C+W+C离子注入H13钢的结构和相变及其对抗腐蚀特性的影响,研究了抗腐蚀相生成的条件以及这些相对抗腐蚀特性的作用,并对其改性机理进行了讨论。实验结果表明,W离子和C离子多重离子注入H13钢可在注入层中形成超饱和浓度的W和C原子分布,分布形状为类高斯分布；并可在注入层中形成钨的碳化物WC和W2C相、合金相Fe2W和Fe6W6C等,这些弥散相不但可以使注入层强化,而且也可使表面钝化,从而增强了表面抗腐蚀特性;W和C双重离子注入具有W和C单离子注入的特性,可进一步提高H13钢的抗腐蚀特性,随着W重离子和C重离子注入剂量的增加,抗腐蚀特性进一步增强。样品C3W3C3的Jp经50个周期腐蚀后,其值比H13钢的Jp下降了60%,而C3W3的Jp比H13钢的Jp下降了47%。C3W3C3的Jp比C3W3的Jp小34%。扫描电子显微镜观察表明,腐蚀后抗腐蚀的钝化层依然存在。%The influence of conditions of C3W3C3-implanted H13 steel oncorrosion resistance was studied using multi-sweep cyclic voltammetry. The structure and formation conditions of phases in corrosion resistance and effects on corrosion resistance were researched. A super-saturated solid solution of W and C atoms was formed in C3W3C3-implanted steel; the phases of Fe2W，WC and FeW3C were obtained in the implanted surface of steel. A passivation layer was formed. Because the multi-implantation possessed both advantage of W and C single implantation in corrosion resistance，so that the implantation is better than single and dual-implantation. The corrosion resistance of the multi-implantation was enhanced following increase of ion dose. After corrosion for 50 voltage sweeps， the Jp of C3W3C3 and C3W3 decreased 60% and 47% comparing to H13 steel respectively. The Jp of C3W3C3 decreased 34% comparing to C3W3. It is found from SEM observation that after corrosion the passivation layer still existed.
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