Reactive synthesis of microporous titanium-aluminide membranes

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Yao Jiang
  • Chuping Deng
  • Yuehui He
  • Yao Zhao
  • Nanping Xu
  • Jin Zou
  • Baiyun Huang

Detail(s)

Original languageEnglish
Pages (from-to)22-24
Journal / PublicationMaterials Letters
Volume63
Issue number1
Publication statusPublished - 15 Jan 2009
Externally publishedYes

Abstract

Titanium-aluminide intermetallic alloys and compounds are traditionally investigated and used as structural materials in high temperature applications. Here we show a novel field where microporous titanium-aluminide membrane with about 20 μm thickness was prepared by a reactive synthesis of a commercial aluminum foil coated with a titanium layer. The porous membrane with the average pore size of about 1.2 μm formed after sintering initially at 550 °C for 4 h and finally at 1300 °C for 30 min, showing a single phase of γ-TiAl. The pore evolution during the synthesis procedure was investigated and analyzed through scanning electron microscopy. The pore formation mechanism is believed to be the Kirkendall effect according to a Ti/Al diffusion couple experiment. © 2008.

Research Area(s)

  • Diffusion, Intermetallic alloys and compounds, Membranes, Porosity, Reactive synthesis

Citation Format(s)

Reactive synthesis of microporous titanium-aluminide membranes. / Jiang, Yao; Deng, Chuping; He, Yuehui; Zhao, Yao; Xu, Nanping; Zou, Jin; Huang, Baiyun; Liu, C. T.

In: Materials Letters, Vol. 63, No. 1, 15.01.2009, p. 22-24.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review