Paper Title:
Study on Rare Earth Catalysis in the Boriding Process to Titanium Alloy
  Abstract

Solid powder boriding experiment was carried out on TC4 titanium alloy surface with method of RE(rare earth)-boriding at the temperature of over 1000°C. By means of XRD, SEM and EDS, phase composition, microstructure and morphology of TC4 titanium alloy after RE-boriding were investigated. The effect of rare earth on phase composition was discussed. Results of the experiment showed that the diffusion layer was composed of top-layer TiB2 and sub-layer TiB whiskers with the highest thickness being 25μm. The XRD results revealed TiB-TiB2 biphasic B-Ti compounds layer formed on the surface of TC4 after RE-boriding. The high content of B and Ce in the surface layer showed rare earth increased the absorption and concentration of B atoms.

  Info
Periodical
Edited by
Zhixiang Hou
Pages
1177-1181
DOI
10.4028/www.scientific.net/AMM.48-49.1177
Citation
F. H. Li, X. H. Yi, J. L. Zhang, Z. G. Fan, "Study on Rare Earth Catalysis in the Boriding Process to Titanium Alloy", Applied Mechanics and Materials, Vols. 48-49, pp. 1177-1181, 2011
Online since
February 2011
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