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Microstructure and Pore Characteristics of a SUS316L Gas Filter Fabricated by Wet Powder Spraying

  • Min-Jeong Lee (Korea Institute of Materials Science (KIMS), Metal powder Department) ;
  • Yu-Jeong Yi (Korea Institute of Materials Science (KIMS), Metal powder Department) ;
  • Hyeon-Ju Kim (Korea Institute of Materials Science (KIMS), Metal powder Department) ;
  • Manho Park (R&D Center, ASFLOW Co. Ltd) ;
  • Jungwoo Lee (Pusan National University, Department of Materials Science and Engineering) ;
  • Jung-Yeul Yun (Korea Institute of Materials Science (KIMS), Metal powder Department)
  • 발행 : 20220000

초록

In this study, a flake-shaped metal powder was coated on a tube shaped pre-sintered 316L stainless steel support using a wet powder spraying process to fabricate a double pore structure, and the pore characteristics were analyzed according to coating time and tube rotation speed. The thickness of the coated layer was checked via optical microscopy, and porosity was measured using image analysis software. Air permeability was measured using a capillary flow porometer. As a result of the experiment, the optimal rotation speed of the support tube was established as 200 rpm. When the rotation speed was fixed, the coating thickness and the coating amount of the double pore structure increased as the coating time increased. The porosity of the double pore structure was increased due to the irregular arrangement of the flake-shaped powder. The air permeability of the double pore structure decreased with increasing fine pore layer thickness.

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과제정보

This work is supported by the Ministry of Trade, Industry & Energy(MOTIE) of the Republic of Korea (no. 20008834 and 20009937).