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IJSTR >> Volume 10 - Issue 2, February 2021 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



Corrosion Characteristics Of Titanium Ti-12Cr And Cp-Ti In Artificial Saliva Afnor At Human Body Temperature

[Full Text]

 

AUTHOR(S)

Sir Anderson, Aguswan, Jon Affi, Yuli Yetri, Gunawarman

 

KEYWORDS

Afnor, Artificial Saliva, Corrosion Rate, CpTi, SEM-EDX, Temperature, Ti-12Cr.

 

ABSTRACT

Corrosion behavior of ß-type titanium alloy, Ti-12Cr, has been investigated within artificial saliva solution to acquire its potential as orthodontic application. Solution treated alloy (Ti-12CrST), aging treated alloy (Ti-12CrAT 60 ks, Ti-12CrAT 30 ks), and CpTi, as a comparator for these two materials, have been immersed in solution at constant temperature 37°C and pH 5 to imitate human body condition. Corrosion behavior was carried out by applying weight loss method with different exposure times (1, 2 and 3 weeks). Surface morphology was analyzed by using scanning electron microscopy (SEM). Energy dispersive X-Ray (EDX) was used to determine thechemical compositions. The results reveal that the corrosion rate of Ti-12CrAT 60ks, Ti-12CrAT 30ks, Ti-12CrST, and Cp-Ti alloys are 3.88x10-6mmpy, 4.18x10-6mmpy, 4.50x10-6mmpy, and 7.70 x10-6mmpy, respectively. The corrosion rate of all Ti-12Cr types is lower than that of the Cp-Ti. The hardness of Ti-12Cr and Cp-Ti alloys decreased by the exposure time. Ti-12CrAT 30ks with 410.4 HVN has the highest hardness value while Cp-Ti with 158.8 HVN has the lowest one. Low oxygen content on the Ti-12CrAT 60ks surface indicates its corrosion resistance. It can be concluded that the best material for orthodontic application from the corrosion resistance view is Ti-12CrAT 60ks.

 

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