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J. Jpn. Inst. Light Met. 67(11)_ 589-594 (2017).pdf1.75 MBPDFView/Open
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Title: Ti-Al系合金マイクロチャンネル内壁のマルチスケールボーラス構造に及ぼす陽極酸化時間の影響
Other Titles: Effect of anodizing time on multiscale porous structure of Ti–Al alloy microchannel wall
Authors: 大参, 達也1 Browse this author →KAKEN DB
山森, 樹2 Browse this author
坂入, 正敏3 Browse this author →KAKEN DB
Authors(alt): Ohmi, Tatsuya1
Yamamori, Tatsuki2
Sakairi, Masatoshi3
Keywords: microchannel
powder metallurgy
anodic oxidation
nanotube array
titanium-aluminum alloy
Issue Date: 30-Nov-2017
Publisher: 軽金属学会
Journal Title: 軽金属
Journal Title(alt): Journal of Japan Institute of Light Metals
Volume: 67
Issue: 11
Start Page: 589
End Page: 594
Publisher DOI: 10.2464/jilm.67.589
Abstract: Effect of anodizing time on the multiscale porous structure of the inner wall of the microchannel produced in a titanium alloy body has been investigated. The microchannel was produced by a powder-metallurgical process in which a titanium-powder compact containing thin aluminum wire was sintered at a temperature above the melting point of aluminum. During sintering, microscopic infiltration of molten aluminum into the porosity of the compacted titanium powder and subsequent diffusion of aluminum into the titanium powder particles brought about the formation of a microchannel lined with Ti–Al alloy layer in the sintered body. The inner walls of the microchannels with uniform composition, Ti–18.0(±1.8)mol%Al, were provided for anodizing experiments. When the anodizing time was in the range from 1.8 to 28.8 ks, the structure of the anodic oxide film was nanotube array. Each specimen had a microchannel of several hundred micrometers in diameter, inner wall asperity of several ten micrometers in size, and nanotube array structure of the anodic oxide film. In the specimen anodized for 59.6 ks, on the other hand, the nanotube array had changed to a different structure resembling that of nanoporous metals produced by dealloying.
Type: article
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: 大参 達也

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