An Investigation on the Effect of Acidithiobacillus Ferrooxidans Bacteria on Biomachining of Titanium Alloy and Copper

محورهای موضوعی : Conventional/Non-Conventional Machining

Mehrdad Ghani ¹ (Researcher in Biotechnology lab, University of Esfahan, Esfahan, Iran)
Hamid Soleimanimehr ² (Department of Mechanical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran)
Elham Shirani Bidabadi ³ (Department of Biotechnology, University of Isfahan, Esfahan, Iran)

تاریخ دریافت : 1398/10/14 تاریخ پذیرش : 1398/12/20 تاریخ انتشار : 1398/11/12

کلید واژه: medium, Biomachining, Acidithiobacillus Ferrooxidans Bacteria,

چکیده مقاله :

Recent advances in technology have increased the necessity of using components with Micro and Nano dimensions. In recent years, the use of bacteria as a renewable tool has hopeful applications in producing different work-pieces. In this study, the effect of Acidithiobacillus Ferrooxidans (A.F) on Vt20 (Titanium alloy) and Cu were investigated. The results illustrated that in the medium of the Aerobic bacteria A.F, the layer of TiO2 on the surface of Vt20 is formed and this oxide layer impedes Vt20 corrosion. Furthermore, it was observed that Cu in a medium of A.F is corroded in the same condition. According to these results, biomachining by A.F is considered as a new approach that is used for Micro-Bio grooving on Cu, but this method has different effects on Vt20. So that due to improving the hardness of Vt20 and high resistance of this alloy against abrasion, this method can be used for coating space traveling equipment, automotive industries and home appliance. On the other hand the effect of pH and temperature on Vt20 were studied and it was observed that the increase in pH and temperature improve the resistance of Vt20 against the surface corrosion.

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