Gil F J, Solano E, Mendoza A, Pena J
CREB - Department of Materials Sciences and Metallurgical Engineering, ETSEIB Universidad Politécnica of Catalonia, Barcelona - Spain.
J Appl Biomater Biomech. 2004 Sep-Dec;2(3):151-5.
The effects of nickel (Ni) allergy from NiTi alloys were reduced due to the titanium nitrided coating obtained by nitrogen gas diffusion at different temperatures. The samples were immersed in artificial saliva at 37 degrees C for different periods demonstrating that the titanium nitride coating prevents biodegradation. In addition, the lack of low friction coefficient for the NiTi super-elastic archwires makes the optimal use of these materials in orthodontic applications difficult. In this study, the reduction in this friction coefficient was achieved by nitrogen diffusion heat treatments. (Journal of Applied Biomaterials & Biomechanics 2004; 2: 151-5).
通过在不同温度下进行氮气扩散获得的氮化钛涂层降低了镍钛合金引起的镍（Ni）过敏效应。将样品在37摄氏度的人工唾液中浸泡不同时间，结果表明氮化钛涂层可防止生物降解。此外，镍钛超弹性弓丝缺乏低摩擦系数，使得这些材料在正畸应用中难以得到最佳利用。在本研究中，通过氮气扩散热处理实现了这种摩擦系数的降低。（《应用生物材料与生物力学杂志》2004年；2：151 - 155）
