J Mater Sci Technol ›› 2006, Vol. 22 ›› Issue (03): 306-310.

• Research Articles • Previous Articles     Next Articles

Evolution of Pore Size Distribution and Mean Pore Sizein Lotus-type Porous Magnesium Fabricated with Gasar Process

Yuan LIU, Yanxiang LI, Huawei ZHANG, Jiang WAN   

  1. Key Laboratory for Advanced Materials Processing Technology, Ministry of Education, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
  • Received:2005-02-24 Revised:2005-07-05 Online:2006-05-28 Published:2009-10-10
  • Contact: Yuan LIU

Abstract: The effect of gas pressures on the mean pore size, the porosity and the pore size distribution of lotus-type porous magnesium fabricated with Gasar process were investigated. The theoretical analysis and the experimental results all indicate that there exists an optimal ratio of the partial pressures of hydrogen pH2 to argon pAr for producing lotus-type structures with narrower pore size distribution and smaller pore size. The effect of solidification mode on the pore size distribution and pore size was also discussed.

Key words: Porous metal, Lotus-type structure, Gasar process