Hank’s溶液中碳离子注入TAMZ合金的耐蚀耐磨行为研究（英文）

发布时间：2018-12-06 08:49

【摘要】：人体模拟体液Hank’s溶液中对碳离子注入TAMZ合金的耐蚀耐磨行为进行研究。结果表明,碳离子注入TAMZ合金表面形成含碳量1.07%的均匀改性层,碳离子注入层厚度达9μm。碳离子注入后,TAMZ表面形成无序层膜,经XRD分析主要由TiC和Ti组成。Hank’s溶液中电化学测试结果表明,注入碳离子的TAMZ合金腐蚀电位升高、电荷转移电阻增大,阳极极化电流密度降低,改善了电化学性能。其原因归结于碳离子注入后碳化物的无序层膜的形成阻滞了合金元素的溶解,提高了膜层的耐蚀性能。Hank’s溶液中注入碳离子的TAMZ合金的摩擦系数和比磨损率均明显小于基体TAMZ合金,硬度提高;而且经摩擦的碳离子注入TAMZ合金比基体TAMZ合金的阳极极化电流密度小、电荷转移电阻大,表明碳离子注入改性层在人体模拟液环境中具有优良的耐磨、耐蚀性能。
[Abstract]:The corrosion and wear resistance of TAMZ alloy implanted with carbon ion in simulated body fluid Hank's solution was studied. The results show that a homogeneous modified layer with a carbon content of 1.07% is formed on the surface of TAMZ alloy implanted by carbon ion, and the thickness of the layer is up to 9 渭 m. After carbon ion implantation, a disordered film was formed on the surface of TAMZ, which was mainly composed of TiC and Ti by XRD analysis. Electrochemical measurements in Hank's solution showed that the corrosion potential and charge transfer resistance of TAMZ alloy implanted with carbon ion increased. The anodic polarization current density decreases and the electrochemical performance is improved. The reason is that the formation of disordered coatings of carbides after carbon ion implantation blocks the dissolution of alloy elements. The friction coefficient and specific wear rate of the TAMZ alloy implanted with carbon ions in Hank's solution were obviously lower than that of the matrix TAMZ alloy, and the hardness was increased. Moreover, the friction carbon ion implanted TAMZ alloy has lower anode polarization current density and larger charge transfer resistance than the base TAMZ alloy, which indicates that the modified layer has excellent wear resistance and corrosion resistance in the human body simulated solution environment.
【作者单位】：大连海事大学船机修造工程交通运输行业重点实验室;
【基金】：National Nature Science Foundation of China(21276036) the Liaoning Provincial Nature Science Foundation of China(2014025018) the Fundamental Research Funds for the Central Universities(3132014323) the Foundation of Liaoning Educational Committee(L2014199)
【分类号】：TG174.4

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