Effect of SiO$^{2-}_{3}$/OH�?? on plasma electrolytic oxidation of Ti�??5Mo�??4V�??3Al

Bulletin of materials science

M Asadi²  A Jafari¹  M Vahidifar²  Mehdi Attarchi¹ 

[1] Materials Science and Engineering, Shahid Bahonar Kerman, Kerman, Iran$$Materials Science and Engineering, Shahid Bahonar Kerman, Kerman, IranMaterials Science and Engineering, Shahid Bahonar Kerman, Kerman, Iran$$;Materials Science and Engineering, Shahid Bahonar Kerman, Kerman, Iran$$Materials Science Department, Yazd Azad University, Yazd, Iran$$Materials Science and Engineering, Shahid Bahonar Kerman, Kerman, IranMaterials Science and Engineering, Shahid Bahonar Kerman, Kerman, Iran$$Materials Science Department, Yazd Azad University, Yazd, Iran$$Materials Science Department, Yazd Azad University, Yazd, IranMaterials Science and Engineering, Shahid Bahonar Kerman, Kerman, Iran$$Materials Science Department, Yazd Azad University, Yazd, Iran$$

关键词: Corrosion;    plasma electrolyte oxidation;    titanium.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Plasma electrolyte oxidation (PEO) was utilized to produce thick films on titanium and Tiâ€�??5Moâ€�??4Vâ€�??3Al alloys by immersing them in various solutions of Na₂SiO₃ and KOH with different concentrations to investigate the effect of SiO$^{2-}_{3}$/OH^â€�?? relations on the morphology and formed phases by utilizing SEM and XRD. Corrosion resistance is evaluated by open circuit potential (OCP) variation of samples in NaCl 3.5% and potentiodynamic polarization. The results show that the unstable film is formed by using more aggressive PEO electrolyte. By increasing this ratio, pore size varied from fine to coarse and the rate of corrosion decreased and OCP became more positive. The best protective film was formed in SiO$^{2-}_{3}$/OH^â€�?? ratio of 1.

【 授权许可】

Unknown