Journal of Northeastern University Natural Science ›› 2018, Vol. 39 ›› Issue (5): 658-662.DOI: 10.12068/j.issn.1005-3026.2018.05.011

• Materials & Metallurgy • Previous Articles     Next Articles

Effects of Chemical Modified Gas-Generating Agent on the Properties of Aluminum foam

GUO Lei, XIAO Lai-rong, ZHAO Xiao-jun, SONG Yu-feng   

  1. School of Materials Science and Engineering, Central South University, Changsha 410083, China.
  • Received:2016-12-06 Revised:2016-12-06 Online:2018-05-15 Published:2018-05-25
  • Contact: XIAO Lai-rong
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Abstract: The aluminum foam was prepared by melt foaming method using chemical modified TiH2 as gas-generating agent and the effect of the TiH2 addition on the porosity, compressive and damping properties of aluminum foam was studied. The results show that using chemical modified TiH2 as gas-generating agent can increase the starting temperature of releasing H2 from 480℃ to 550℃ and decrease the rate of releasing H2.With increasing the TiH2 addition, the porosity of aluminum foam increases, the compressive stress decreases and the damping property firstly increases and then decreases. When the mass percentage of the TiH2 addition is 1.5%, the porosity of aluminum foam is up to 88%, the size and distribution of pores are uniform, and the compressive and damping properties of the foam are well improved.

Key words: chemical modification, gas-generating agent, aluminum foam, compressive property, damping property

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