Title of article
Effect of elemental powder blending ratio on combustion foaming behavior of porous Al–Ti intermetallics and Al3Ti/Al composites
Author/Authors
Kobashi، نويسنده , , Makoto and Inoguchi، نويسنده , , Norio and Kanetake، نويسنده , , Naoyuki، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2010
Pages
7
From page
1039
To page
1045
Abstract
Porous Al–Ti intermetallics and Al3Ti/Al composites were fabricated by combustion foaming process. Fundamentally, aluminum and titanium powders were blended (Al/Ti mole blending ratios ranging from 0.33 to 10.0). Additionally, boron carbide (B4C) powder was blended as exothermic agent since the heat of TiC and TiB2 formation is much higher than those of Al–Ti intermetallics. The blended powder compact was heated to induce the combustion reaction. Isotropic closed pores were produced by this process. By adding 10 vol.% exothermic agent, the porosity exceeded 60% in a wide range of Al/Ti ratios (3.0–10.0). It was confirmed that high heat of reaction of exothermic agent assisted the complete conversion of aluminum and titanium powders to Al3Ti.
Keywords
A. Aluminides , miscellaneous , A. Composites , C. Powder metallurgy , including consolidation , C. Reaction synthesis , G. Automotive uses , including engines (and other transportation uses)
Journal title
Intermetallics
Serial Year
2010
Journal title
Intermetallics
Record number
1504672
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