Author/Editor		Marinović, A; Metikoš-Huković, M; Milošev, I
Title		Stress generation during the growth of anodic oxide films on titanium-aluminium alloys
Type		članek
Source		In: Bonora PL, Deflorian F, editors. Electrochemical approach to selected corrosion and corrosion control studies. Papers from 50th ISE meeting; 1999; Sep; Pavia. London: IOM communications,
Publication year		2000
Volume		str. 166-79
Language		eng
Abstract		The formation of stable passive oxide films is critical to the design engineering of new biomaterials for orthopaediac implants. The growth of anodic oxide films on titanium, Ti6A14V and Ti6A16Nb alloys has been investigated in physiological solution at 37 C. During anodic film growth, the electric field strength within the film was of the order of 10 7 V cm-1. This electric field exerts significant electrostriction on the film and yields high internal compressive stress of the order of a few GPa. The observed transformation from amorphous to crystalline structure at 2 V for all investigated materials and the onset of pitting corrosion and passivity breakdown for the Ti6A14V alloy are accompanied by the appearance of compressive stress within the oxide film. The results are discussed with respect to the relevant reactions occuring at the metal/oxide and oxide/electrolyte interface during oxide growth.
Descriptors		IMPLANTS, ARTIFICIAL TITANIUM ALUMINUM COMPOUNDS SURFACE PROPERTIES CORROSION ELECTRODES OXIDES ELECTRIC IMPEDANCE