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介绍了一种新的泡沫金属材料—泡沫SiC颗粒增强铝基复合材料,泡沫的孔隙率为60%~85%。用TiH2作发泡剂,采用直接发泡工艺制备。由于复合材料熔体自身粘度较大,不需要采用任何增粘措施,发泡工艺简单,易于操作。该泡沫材料比普通泡沫铝或铝合金具有更高的抗拉、抗压强度。

A new metallic foam, i.e. the foam of SiC particle-reinforcedaluminum matrix composite with the porosity of 60%~85% is introduced. The foam is produced by the foaming process with TiH2 blowing agent. The foaming process is controlled easily since the viscosity of composite melts is quite great, without the addition of viscosity-increasing agent. Comparing with common foamed aluminum or its alloys, the composite has greater tensile and compression strength.

参考文献

[1] G J Davis;S Zhen .[J].Journal of Materials Science,1983,18:1899.
[2] 吴炳尧.[J].铸造,1994(06):30.
[3] C B Berry Jr;R J Fanning .[P].US 3705030,1972.
[4] C B Berry Jr;A R Valdo .[P].US 3725037,1973.
[5] L M Niebylski et al.[P].US 3794481,1974.
[6] L M Niebylski et al.[P].US 3940262,1976.
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