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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。
The corrosion resistance and wear resistance of TAMZ alloy infiltrated by carbon ions were studied in human simulated body fluid Hank’s solution. The results showed that carbon ions were implanted into the surface of TAMZ alloy to form a uniformly modified layer with a carbon content of 1.07%. The thickness of carbon ion implantation layer was 9μm. Carbon ion implantation, TAMZ surface disorder layer of film, by XRD analysis mainly composed of TiC and Ti. The results of electrochemical tests in Hank’s solution show that the corrosion potential of TAMZ alloy with carbon ions increases, the charge transfer resistance increases, and the anodic polarization current density decreases, improving the electrochemical performance. The reason is due to the formation of disordered lamellar carbide after carbon ion implantation, which hinders the dissolution of alloying elements and improves the corrosion resistance of the film. TAMZ alloy with carbon ions infiltrated into Hank’s solution has a significantly lower friction coefficient and specific wear rate than that of TAMZ alloy. The hardness of the TAMZ alloy is smaller than that of TAMZ alloy. The charge-transfer resistance Large, indicating that the carbon ion-implanted modified layer has excellent wear resistance and corrosion resistance in a human simulated fluid environment.