title: [Effects of TiSi coating on corrosion resistance of dental Co-Cr alloy].
abstract: OBJECTIVE
  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.
  
  
  CONCLUSIONS
  TiSi coating can improve corrosion resistance of CoCr alloy.
authors.affiliation: 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. jydbhu@sohu.com
authors.forename: Bin
authors.initials: B
authors.lastname: Hu
authors.forename: Jie
authors.initials: J
authors.lastname: Chen
authors.forename: Fu-qiang
authors.initials: FQ
authors.lastname: Zhang
mesh_terms: D000497:Alloys; D003343:Corrosion; D003722:Dental Alloys; D006801:Humans; D012464:Saliva, Artificial; D013499:Surface Properties; D014025:Titanium
chemical_list: D000497:Alloys; D003722:Dental Alloys; D012464:Saliva, Artificial; D014025:Titanium