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

SCRIPTA MATERIALIA

卷:60

Article

Perez, P.¹  Salmi, G.²  Munoz, A.²  Monge, M. A.² 

[1] CSIC, CENIM, Madrid 28040, Spain

[2] Univ Carlos III Madrid, Dpto Fis, Madrid 28911, Spain

关键词: Powder processing;    Yttria addition;    Metals and alloys-titanium;    Oxidation;   

DOI  :  10.1016/j.scriptamat.2009.02.040

来源: Elsevier

【 摘 要 】

The yttria dispersion effect on the oxidation resistance of titanium prepared by powder metallurgy has been evaluated between 700 and 900 degrees C. Yttria additions slightly increase the oxidation rate up to 800 degrees C and decrease it considerably at 900 degrees 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. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

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