Materials Transactions Online

Materials Transactions, Vol.59 No.06 (2018) pp.922-926
© 2018 The Japan Institute of Metals and Materials

The Effect of Aluminum Dihydrogen Phosphate on the Enhanced Mechanical Properties of Aluminum Foams

Qiang Feng1, Xueyan Wu2, Yanning Guo1, Jia She3 and Yong Xiang1

1College of Physics and Engineering, Chengdu Normal University, 99 East Haike Road, Chengdu 611130, Sichuan, P. R. China
2School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
3School of Materials Science and Engineering, Chongqing University, Chongqing 400044, P. R. China

Powder metallurgy route was employed to fabricate aluminum (Al) foams with open and small cells. Starch acetate powder was adopted as a space holder, which evaporates during carbonization and leaves behind pores in the Al matrix. Aluminum dihydrogen phosphate (ADP) was used as binding agent between Al particles in present work. Cell diameters of Al foams range from several microns to thousands of microns, and cell geometry depends mainly on the distribution of starch acetate particles during mixing process. The phase compositions were characterized by X-ray diffraction (XRD). The scanning electron microscopy (SEM) together with energy dispersive X-ray spectroscopy (EDS) suggests the existence of carbon produced along cell wall after annealing. Subsequently, a uniaxial compression test was performed to study the effect of ADP content on mechanical properties and absorption abilities of Al foams. It is shown that both mechanical property and energy absorption ability are improved with appropriate amount of ADP.

[doi:10.2320/matertrans.M2017247]

(Received 2017/11/21; Accepted 2018/03/29; Published 2018/05/25)

Keywords: aluminum foams, space holder, aluminum dihydrogen phosphate, powder sintering, absorption ability

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