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Fabrication of porous nickel membrane for high precision gas filter

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2007, 17(5), pp.210-216
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering

송한복 1 Jae-Kyo Yang 1 성기훈 2 서동문 2 강두홍 2 CHOA, YONGHO 1

1한양대학교
2㈜아스플로

Accredited

ABSTRACT

Porous nickel membrane for high precision gas filter was prepared by in-situ reduced/sintered process of NiO with an addition of polymer (PMMA; polymethyl methacrylate). It showed that the porosity of Ni membrane was approximately 52 %. It is similar to metal membrane which prepared using metal fiber as raw materials. The average pore diameter and porosity of Ni membrane increased as content of added polymer and decreased as elevating reduced/sintered temperature from 800oC to 1000oC. Increase of porosity at 800oC was associated with surface diffusion mechanism that leads to initial sintering, while decrease of porosity at 1000oC was associated with lattice diffusion and grain boundary diffusion.

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