Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Improving Flow Property of AlSi10Mg Powder for Additive Manufacturing via Surface Treatment using Methyltrichlorosilane

Methyltrichlorosilane 표면 처리를 통한 적층 제조용 AlSi10Mg 분말의 유동 특성 향상 공정 연구

  • Park, Sang Cheol (Korea Institute for Rare Metals, Korea Institute of Industrial Technology) ;
  • Kim, In Yeong (Korea Institute for Rare Metals, Korea Institute of Industrial Technology) ;
  • Kim, Young Il (Korea Institute for Rare Metals, Korea Institute of Industrial Technology) ;
  • Kim, Dae-Kyeom (Korea Institute for Rare Metals, Korea Institute of Industrial Technology) ;
  • Lee, Kee-Ahn (Department of Materials Science and Engineering, Inha University) ;
  • Oh, Soong Ju (Department of Materials Science and Engineering, Korea University) ;
  • Lee, Bin (Korea Institute for Rare Metals, Korea Institute of Industrial Technology)
  • 박상철 (한국생산기술연구원 한국희소금속산업기술센터) ;
  • 김인영 (한국생산기술연구원 한국희소금속산업기술센터) ;
  • 김영일 (한국생산기술연구원 한국희소금속산업기술센터) ;
  • 김대겸 (한국생산기술연구원 한국희소금속산업기술센터) ;
  • 이기안 (인하대학교 신소재공학과) ;
  • 오승주 (고려대학교 신소재공학과) ;
  • 이빈 (한국생산기술연구원 한국희소금속산업기술센터)
  • Received : 2022.09.14
  • Accepted : 2022.10.05
  • Published : 2022.10.28
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Abstract

AlSi10Mg alloys are being actively studied through additive manufacturing for application in the automobile and aerospace industries because of their excellent mechanical properties. To obtain a consistently high quality product through additive manufacturing, studying the flowability and spreadability of the metal powder is necessary. AlSi10Mg powder easily forms an oxide film on the powder surface and has hydrophilic properties, making it vulnerable to moisture. Therefore, in this study, AlSi10Mg powder was hydrophobically modified through silane surface treatment to improve the flowability and spreadability by reducing the effects of moisture. The improved flowability according to the number of silane surface treatments was confirmed using a Carney flowmeter. In addition, to confirm the effects of improved spreadability, the powder prior to surface treatment and that subjected to surface treatment four times were measured and compared using s self-designed recoating tester. The results of this study confirmed the improved flowability and spreadability based on the modified metal powder from hydrophilic to hydrophobic for obtaining a high-quality additive manufacturing product.

Keywords

Acknowledgement

이 연구는 2022년도 산업통상자원부 및 산업기술평가관리원(KEIT) 연구비 지원에 의한 연구임(20001221, 20013122).

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