Fabricating of Open-cell Porous Al-Si Alloy with Pressure Penetration Casting

Abstract

Abstract: Open-cell porous Al alloy was fabricated by pressure penetration casting. The fabrication of preform was studied in detail. When forming temperature is about 700℃ and binder content is about 10%, preform with high compressive strength is obtained. Good porous Al alloy with pore size (0.5~1.6 mm) and porosity (60%~80%) can be obtained under 100℃superheating of liquid metal and about 1.0MPa applied pressure. The size of the largest sample is up to 100mm in diameter and 100mm in height. With the help of SEM it was found that the obtained material is a three-dimension open-cell porous structure with well distributed and connected with each other pores. Finally theoretical analysis was carried out to explain the effect of fabricating process.

Key words:

Qingyan XU, Yuyong CHEN, Qingchun LI. Fabricating of Open-cell Porous Al-Si Alloy with Pressure Penetration Casting[J]. J Mater Sci Technol, 1999, 15(01): 63-66.

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Fabricating of Open-cell Porous Al-Si Alloy with Pressure Penetration Casting

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