摘要
利用阴极等离子电解沉积技术(CPED)在Ti6Al4V表面制备了Al2O3/Mo S2减磨耐蚀复合涂层。利用XRD、SEM、EDS等检测手段分析了复合涂层的形貌、物相及元素分布。结果表明,涂层表面呈多孔状,厚度为100μm,由α-Al2O3、γ-Al2O3与Mo S23相组成。涂层与基体结合强度达35 N。与Ti6Al4V相比,该涂层的摩擦系数降低了1/3,腐蚀电位显著提高,腐蚀电流密度下降,有效减缓了基体的腐蚀速率。
Al2O3/ MoS2 composite coatings on Ti6Al4 V alloy substrate were prepared by cathodic plasma electrolytic deposition process( CPED). The morphology,structure and phase composition of the coatings were analyzed by SEM,EDS analysis and XRD. The results show that the porous coatings with the thickness of about 100 μm are mainly composted of α-Al2O3、γ-Al2O3 and Mo S2 phases. The critical load of the coatings peeled off from the substrate is 35 N by scratch test. The friction coefficient of the coatings derived from the friction test is deduced by 1 /3 of that of Ti6Al4 V substrate. Much higher corrosion resistance of the coatings is also proved by the measurement of the polarization curves of Ti6Al4 V alloy and the Al2O3/ Mo S2 coatings.
引文
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