ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The surface of Ti-29Nb-13Ta-4.6Zr (TNTZ) subjected to gas nitriding at 1023–1223 Kwas investigated in comparison with the conventional biomedical titanium alloy, Ti-6Al-4V ELI(Ti64). After gas nitriding, the microstructures near the surface of these alloys were observed byoptical microscopy, X-ray diffraction, Auger electron spectroscopy, and X-ray photoelectronspectroscopy. In both alloys, two titanium nitrides (TiN and Ti2N) are formed and the α phaseprecipitated by gas nitriding. Furthermore, oxygen impurity in the gas nitriding atmosphere reactswith the titanium nitrides; thus, TiO2 is formed at the outermost titanium nitride layer. The surfacehardening was also evaluated by Vickers hardness measurement. The Vickers hardness near thesurface of TNTZ and Ti64 increases significantly by gas nitriding
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/18/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.561-565.1509.pdf
Permalink