發(fā)布時(shí)間：2018-12-06 08:49

【摘要】：人體模擬體液Hank’s溶液中對碳離子注入TAMZ合金的耐蝕耐磨行為進(jìn)行研究。結(jié)果表明,碳離子注入TAMZ合金表面形成含碳量1.07%的均勻改性層,碳離子注入層厚度達(dá)9μm。碳離子注入后,TAMZ表面形成無序?qū)幽?經(jīng)XRD分析主要由TiC和Ti組成。Hank’s溶液中電化學(xué)測試結(jié)果表明,注入碳離子的TAMZ合金腐蝕電位升高、電荷轉(zhuǎn)移電阻增大,陽極極化電流密度降低,改善了電化學(xué)性能。其原因歸結(jié)于碳離子注入后碳化物的無序?qū)幽さ男纬勺铚撕辖鹪氐娜芙?提高了膜層的耐蝕性能。Hank’s溶液中注入碳離子的TAMZ合金的摩擦系數(shù)和比磨損率均明顯小于基體TAMZ合金,硬度提高;而且經(jīng)摩擦的碳離子注入TAMZ合金比基體TAMZ合金的陽極極化電流密度小、電荷轉(zhuǎn)移電阻大,表明碳離子注入改性層在人體模擬液環(huán)境中具有優(yōu)良的耐磨、耐蝕性能。
[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.
【作者單位】： 大連海事大學(xué)船機(jī)修造工程交通運(yùn)輸行業(yè)重點(diǎn)實(shí)驗(yàn)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)
【分類號】：TG174.4

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