[TiSi涂层对牙科钴铬合金耐腐蚀性的影响]

[Effects of TiSi coating on corrosion resistance of dental Co-Cr alloy].

作者信息

Hu Bin, Chen Jie, Zhang Fu-qiang

机构信息

Department of Prosthodontics, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai 200011, China.

出版信息

Shanghai Kou Qiang Yi Xue. 2011 Dec;20(6):595-7.

PMID:22241306

Abstract

PURPOSE

To investigate the effect of titanium-silicon(TiSi) coating on corrosion resistance of dental CoCr alloy.

METHODS

The commonly used CoCr alloy was cast into 10mm×10mm×3mm specimen in size. Then the specimen was coated with TiSi on the surface by sol-gel method. The specimens were immersed in artificial saliva. Weight loss method was used to analyze corrosion rate. Element analysis using Auger Electron Spectroscopy (AES) was performed to compare the content of element before and after coating of TiSi in artificial saliva. SAS8.0 software package was used for statistical analysis.

RESULTS

By weight lost method, before and after coating TiSi, the corrosive rate was 0.163 g·m(-2)·h(-1) and 0.138 g·m(-2)·h(-1) respectively. With AES, in Co-Cr alloy not coating TiSi, atomic concentration (g·m(-2)) of Ni, Co, Cr and Si was 7.728582657,0.008801153,0.306195965 and 0.194851978,respectively. After coating Ti-Si,the content of Ni, Co, Cr and Si and 4.745189808,0.004718889, 0.153195362 and 0.778406136, respectively. The release rate of the Ni,Co,cr were decreased after coating.

CONCLUSION

TiSi coating can improve corrosion resistance of CoCr alloy.

摘要

目的

研究钛硅（TiSi）涂层对牙科钴铬合金耐腐蚀性的影响。

方法

将常用的钴铬合金铸造成尺寸为10mm×10mm×3mm的试样。然后采用溶胶-凝胶法在试样表面涂覆TiSi。将试样浸泡在人工唾液中。采用失重法分析腐蚀速率。利用俄歇电子能谱（AES）进行元素分析，以比较在人工唾液中涂覆TiSi前后元素的含量。使用SAS8.0软件包进行统计分析。

结果

通过失重法，涂覆TiSi前后的腐蚀速率分别为0.163 g·m(-2)·h(-1)和0.138 g·m(-2)·h(-1)。采用AES分析，在未涂覆TiSi的钴铬合金中，Ni、Co、Cr和Si的原子浓度（g·m(-2)）分别为7.728582657、0.008801153、0.306195965和0.194851978。涂覆Ti-Si后，Ni、Co、Cr和Si的含量分别为4.745189808、0.004718889、0.153195362和0.778406136。涂覆后Ni、Co、Cr的释放速率降低。