This paper describes a new method for surface-alloying treatment to strengthen the pore walls of Al foams using the powder metallurgy method. The advantage of this technique is that the pore walls of Al foams can be enhanced efficiently during the process of preparation. Spherical carbamide particles coated with bronze powder were employed as space-holder. The pore configuration depends mainly on the distribution of space-holder particles during the cold compacted process. The phase components of the modified Al foams were studied by X-ray diffraction Rietveld refinement. Results show that the strengthening effect on the mechanical property of Al foams is significantly related to both phase compositions and phase grain size among the pore walls.

中文翻译：

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用表面合金化技术加强泡沫铝的孔壁

本文介绍了一种采用粉末冶金法强化泡沫铝孔壁的表面合金化处理新方法。该技术的优点是在制备过程中可以有效地增强泡沫铝的孔壁。用青铜粉末包覆的球形尿素颗粒用作空间支架。孔隙结构主要取决于冷压过程中空间保持器颗粒的分布。通过 X 射线衍射 Rietveld 细化研究了改性铝泡沫的相成分。结果表明，对泡沫铝力学性能的强化作用与孔壁间的相组成和相晶粒尺寸均显着相关。