摘要
目的 :探讨正畸用磁块表面镀氮化钛膜后抗人工唾液腐蚀性能。方法 :将镀膜、未镀膜磁块分别置入人工唾液中 ,37℃恒温下浸泡 1个月 ,肉眼、EPMA观察 2组磁块表面形貌特征。结果 :镀氮化钛膜磁块表面均匀致密 ,无明显裂隙和崩解 ;而未镀膜磁块表面粗糙不平 ,有明显裂隙和崩解现象。结论
Objective: To study the corrosion resistance of orthodontic magnet with titanium nitride coating in artificial saliva. Methods: 6 samples of magnet in the size 3 mm×5 mm×7 mm were prepared.3 of them were coated with titanium nitride by plasma enhanced chemical vapor deposition,another 3 without coating were used as controls.The samples were immersed into artificial saliva at 37 ℃ for one month. Then the surface characters of two kinds of magnets were observed with the naked eye and by electron-probe microanalysis (EPMA). Results: The surface of the magnets with titanium nitride coating was fine and close in texture and there were no cleft and disintegrated area. However, that of the magnets without titanium nitride coating was uneven and coarse in texture,and there were evident clefts and disintegrated areas. Conclusion: The corrosion resistance of orthodontic magnets with titanium nitride coating is stronger than that without coating.
出处
《实用口腔医学杂志》
CAS
CSCD
北大核心
2003年第3期257-259,共3页
Journal of Practical Stomatology
基金
云南省自然科学基金资助项目 (编号 :2 0 0 1C0 0 50M )
关键词
口腔正畸
磁块
氮化钛膜
抗人工唾液腐蚀性能
人工唾液
Orthodontics
Permanent magnetic material
Titanium nitride coating
Artificial saliva
Corrosion resistance
