钛铸件表面离子氮化/涂层复合处理及其性能研究  

Morphologies and Properties of the Coating on Cast Pure Titanium by Ion Nitriding/TiN-Coated Compound Treatment

作　　者：王菁[1] 郭天文[1] 安艳新[1] 梁海锋[2] 佟宇[1] 

机构地区：[1]第四军医大学,陕西西安710032 [2]西安工业大学,陕西西安710032

出　　处：《稀有金属材料与工程》2012年第3期518-521,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(30171022);陕西省薄膜技术与光学检测重点实验室基金(ZSKJ200906)

摘　　要：为提高口腔医学领域用纯钛铸件的表面性能,改善其美观效果,用辉光等离子氮化、脉冲电弧离子镀涂层复合处理纯钛铸件,使用扫描电镜、接触角测量系统及X射线衍射分析仪评价其表面性能及晶相结构组成,再用分光测色计分析其色彩学特征。结果表明,纯钛铸件等离子氮化、镀氮化钛涂层复合处理后表面形成均匀稳定的TiN复合梯度涂层;人工唾液在复合处理试件表面的接触角(60.29±2.00)°明显小于纯钛(73.12±3.29)°;颜色均匀美观,在CIE表色系中L*:61.22±0.455、a*:1.84±0.055、b*:25.66±0.219,呈金黄色,表面晶相结构以耐磨性较好的TiN、Ti2N为主。Plasma nitriding combined with pulsed bias arc ion plating was employed to treat cast pure titanium （PT） used as a kind of medical and dental materials in order to improve the surface properties and to obtain better the color stability. The morphology and phase structure of the modified layer were analyzed using XRD and SEM. The contact angle and color of the samples were studied after ion nitriding/TiN-coated compound treatment （compound nitriding, CN） by Easy Drop Standard and spectraphotometer, respectively. The results show that a composite gradient TiN coating, which is uniform, stable and dense, is formed after CN. The contact angle of the artificial saliva on samples treated by CN （60.29±2.00）° is obviously lower than that of the untreated PT samples （73.12±3.29）°. And the color of CN samples with L： 61.22±0.455, a： 1.84±0.055, b： 25.66±0.219 in CIE-1976- L, a, b colorrange system is bright and golden. The main phases on the specimen surface are TiN and Ti2N with good wear resistance.

关 键 词：钛铸件 辉光等离子渗氮 氮化钛(TiN) 表面形貌 色彩 

分 类 号：TG174.4[金属学及工艺—金属表面处理]