Structure of Ni-Al Intermetallic Porous Thick Films Produced by Microscopic Reactive Infiltration

Naoya  Hayashi; Tatsuya Ohmi; Manabu Iguchi

doi:10.4028/www.scientific.net/MSF.631-632.345

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HomeMaterials Science ForumMaterials Science Forum Vols. 631-632Structure of Ni-Al Intermetallic Porous Thick...

Structure of Ni-Al Intermetallic Porous Thick Films Produced by Microscopic Reactive Infiltration

Abstract:

A microchanneling process utilizing microscopic reactive infiltration produces microchannels and alloy lining layers in metal bodies. We examined the composition and structure of a Ni-Al intermetallic lining layer with a peculiar porous structure produced by Ni-Al reactive infiltration. The Ni-Al lining layer is a thick film consists of multiple sub-layers and has many micropores. Such a porous structure and the heat resistance of Ni-Al intermetallic compound are appropriate for a catalyst support in high-temperature use. Image analysis and EPMA revealed that both aluminum concentration and voidage in the Ni-Al lining layer show a graded distribution along the thickness direction of the lining layer.

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Periodical:

Materials Science Forum (Volumes 631-632)

Pages:

345-350

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.631-632.345

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Online since:

October 2009

Authors:

Naoya Hayashi, Tatsuya Ohmi, Manabu Iguchi

Keywords:

Catalyst Support, Intermetallic Compound (IMC), Nickel Aluminide, Porous Structure, Powder Metallurgy (PM)

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References

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