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Titanium aluminide coating on titanium surface using three-dimensional microwelder

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Title: Titanium aluminide coating on titanium surface using three-dimensional microwelder
Authors: Mizuta, Naoki Browse this author
Matsuura, Kiyotaka Browse this author →KAKEN DB
Kirihara, Soshu Browse this author
Miyamoto, Yoshinari Browse this author
Keywords: surface modification
titanium aluminides
TIG welding
rapid prototyping
Issue Date: 25-Sep-2008
Publisher: ELsevier Science Sa
Journal Title: Materials Science and Engineering A
Volume: 492
Issue: 1-2
Start Page: 199
End Page: 204
Publisher DOI: 10.1016/j.msea.2008.03.028
Abstract: Feasibility of anew method of titanium aluminide coating on titanium surface based on a reaction between aluminum liquid beads and the surface of titanium substrate has been studied using a computer-aided three-dimensional microwelder (3DMW) designed by the present authors. A predetermined length of thin aluminum wire was fed onto the substrate Surface, and a spark was stricken from a thin electrode of a W-Ce2O3 alloy to make a small aluminum liquid bead on the substrate Surface and to simultaneously melt a small area of the substrate surface beneath the bead. All conditions including the length of the wire feeding, the position of the electrode, electric power, etc. had been programmed beforehand. The liquid bead containing aluminum and titanium rapidly solidified on the titanium substrate surface producing titanium aluminides on it. Repetition of the aluminum wire feeding, the electrode positioning and the spark striking produced a coating layer consisting of sub-layers of TiAl3, TiAl and Ti3Al from the surface side to the substrate side. Vickers hardness and wear resistance of the coated sample were remarkably improved. (C) 2008 Elsevier B.V. All rights reserved.
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 松浦 清隆

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