Preliminary communication

Properties of pure titanium and ultra fine grained titanium

I. Bernáthová ; Faculty of Metallurgy, Technical University of Košice, Košice, Slovakia
M. Buršák ; Faculty of Metallurgy, Technical University of Košice, Košice, Slovakia

Abstract

The properties of ultra fine grained nano Titanium made by ECAP technology and pure cold drawn Titanium are analyzed in this contribution. Mechanical properties, resistance to wear by a ZrO₂ ball friction test, corrosion in a Hank solution by the Tafel’s method at temperatures 21 °C and 37 °C, and fatigue properties in torsion were evaluated and compared. The fatigue fracture started with crack formation parallel to the specimen axis and it was finalized by cracking in the angle of maximum shear stress. Titanium powder has been observed on the sample surfaces which indicated the crack initiation. Nano structure Titanium showed higher resistance to corrosion less wear by friction, and to a limited number of cycles higher fatigue strength.

Keywords

fatigue in torsion; biocompatibility; nano Titanium; resistance to corrosion; wear

Hrčak ID:

68430

URI

https://hrcak.srce.hr/68430

Publication date:

3.10.2011.

Article data in other languages: croatian

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