Influence of yttria additions on the oxidation behaviour of titanium prepared by powder metallurgy Articles uri icon

publication date

  • June 2009

start page

  • 1008

end page

  • 1011

issue

  • 11

volume

  • 60

international standard serial number (ISSN)

  • 1359-6462

electronic international standard serial number (EISSN)

  • 1872-8456

abstract

  • The yttria dispersion effect on the oxidation resistance of titanium prepared by powder metallurgy has been evaluated between 700 and 900º C. Yttria additions slightly increase the oxidation rate up to 800ºC and decrease it considerably at 900º C. The multilayered rutile scale formed on pure titanium prepared by conventional techniques is replaced by a denser rutile scale in the case of Titanium prepared by powder metallurgy. Yttria additions raise the temperature at which a more protective dense rutile scale is formed

keywords

  • powder processing ; yttria addition; metals and alloys-titanium; oxidation