Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Evaluation of Solid Surface Properties by Analysis of Liquid Penetration Rate into Powder Beds

분체층 내 액체 침투속도 해석에 의한 분체 표면성질의 평가

  • Ha, Jong-Hak (Interdisciplinary Program in Powder Technology Graduate School, Pusan National University) ;
  • Kim, Seong-Soo (Interdisciplinary Program in Powder Technology Graduate School, Pusan National University) ;
  • Wang, Lin (School of Nano and Advanced Materials Engineering, Changwon National University) ;
  • Choi, Hee-Kyu (School of Nano and Advanced Materials Engineering, Changwon National University)
  • 하종학 (부산대학교 대학원 분체공학협동과정) ;
  • 김성수 (부산대학교 대학원 분체공학협동과정) ;
  • 왕림 (창원대학교 나노신소재공학부) ;
  • 최희규 (창원대학교 나노신소재공학부)
  • Published : 2008.03.25
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Abstract

Evaluation of the solid surface properties by an analysis of the liquid penetration rate into powder beds is very important in applications of powder products. The penetration rate is related the surface property in powder beds. In order to analyze the surface property of powders, the contact angle values of several powders were obtained using the Washbun equation and the Wicking method. The surface free energy value ${\gamma}S$ was divided into a polar component ${\gamma}S^p$ and a dispersion component ${\gamma}S^d$. Inorganic powders such as calcite were used as test samples. The effects of the particle size and the type of experimental liquid on the penetration rate were measured. It was confirmed that the surface free energy of the grinding sample is smaller than that of the classification sample.

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References

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