한국세라믹학회지 (Journal of the Korean Ceramic Society)

  • 제55권4호
  • /
  • Pages.352-357
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  • 2018
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  • 1229-7801(pISSN)
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  • 2234-0491(eISSN)
한국세라믹학회 (The Korean Ceramic Society)
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Effect of Multi-Sized Powder Mixture on Solid Casting and Sintering of Alumina

  • Cho, Kyeong-Sik (School of Advanced Materials Science and Engineering, Kumoh National Institute of Technology) ;
  • Lee, Hyun-Kwuon (School of Advanced Materials Science and Engineering, Kumoh National Institute of Technology) ;
  • Min, Jae-Hong (School of Advanced Materials Science and Engineering, Kumoh National Institute of Technology)
  • 투고 : 2018.03.25
  • 심사 : 2018.04.26
  • 발행 : 2018.07.31
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초록

The slip casting process is widely used to make green bodies from ceramic slips into dense compacts with homogeneous microstructure. However, stress may be generated inside the green body during drying, and can lead to cracking and bending during sintering. When starting from the spherical powders with mono-size distribution to make the close packed body, interstitial voids on octahedral and tetrahedral sites are formed. In this research, experiments were carried out with powders of three size types (host powder (H), octahedral void filling powder (O) and tetrahedral void filling powder (T)) controlled for average particle size by milling from two commercial alumina powders. Slips were prepared using three different powder batches from H only, H+O or H+O+T mixed powders. After manufacturing green compacts by solid-casting, compacts were dried at constant temperature and humidity and sintered at $1650^{\circ}C$. Alumina samples fabricated from the multi-sized powder mixture had improved compacted and sintered densities.

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참고문헌

  1. J. Zheng, P. F. Johnson, and J. S. Reed, "Improved Equation of the Continuous Particle Size Distribution for Dense Packing," J. Am. Ceram. Soc., 73 [5] 1392-98 (1990). https://doi.org/10.1111/j.1151-2916.1990.tb05210.x
  2. C. C. Furnas, "Grading Aggregates, I-Mathematical Relations for Beds of Broken Solids of Maximum Density," Ind. Eng. Chem., 23 [9] 1052-58 (1931). https://doi.org/10.1021/ie50261a017
  3. F. O. Anderegg, "Grading Aggregates, II-The Application of Mathematical Formulas to Mortars," Ind. Eng. Chem., 23 [9] 1058-64 (1931). https://doi.org/10.1021/ie50261a018
  4. R. K. Mc Geary, "Mechanical Packing of Spherical Particles," J. Am. Ceram. Soc., 44 [10] 513-22 (1961). https://doi.org/10.1111/j.1151-2916.1961.tb13716.x
  5. R. M. German, "Prediction of Sintered Density for Bimodal Powder Mixtures," Metall. Trans. A, 23 [5] 1455-65 (1992). https://doi.org/10.1007/BF02647329
  6. S. Taruta and N. Takusagawa, "Slip Casting of Alumina Powder Mixtures with Bimodal Size Distribution," J. Ceram. Soc. Jpn., 104 [5] 447-50 (1996). https://doi.org/10.2109/jcersj.104.447
  7. K. K. Lee, "Slip Casting," J. Korean Ceram. Soc., 12 [1] 12-9 (1997).
  8. J. A. Lee and J. J. Kim, "Sintering Behavior of Bimodal Size-Distributed Alumina Powder Mixtures," J. Korean Ceram. Soc., 36 [7] 718-24 (1999).
  9. S. Tauta, Y. Sakurai, N. Takusagawa, K. Okada, and N. Otsuka, "Slip Casting of Alumina Powder Mixtures with Bimodal Size Distribution-Influence of Particle Size Difference between Fine and Coarse Powders on Packing and Con- solidation Process," J. Ceram. Soc. Jpn., 108 [3] 254-60 (2000). https://doi.org/10.2109/jcersj.108.1255_254
  10. F. M. Tiller and C.-D. Tsai, "Theory of Filtration of Ceramics: 1. Slip Casting," J. Am. Ceram. Soc., 69 [12] 882-87 (1986). https://doi.org/10.1111/j.1151-2916.1986.tb07388.x
  11. T. K. Sherwood, "The Drying of Solids-I," Ind. Eng. Chem., 21 [1] 12-6 (1929). https://doi.org/10.1021/ie50229a004
  12. T. K. Sherwood, "The Drying of Solid-II," Ind. Eng. Chem., 21 [10] 976-80 (1929). https://doi.org/10.1021/ie50238a021
  13. T. K. Sherwood, "The Drying of Solid-III," Ind. Eng. Chem., 22 [2] 132-36 (1930). https://doi.org/10.1021/ie50242a009
  14. J. S. Reed, "Drying," pp. 545-61 in Principles of Ceramics Processing, Willey, New York, 1995.
  15. K.-S. Cho, I.-B. Song, and J. Kim, "Homogeneous Shape Forming of Alumina by Pressure-Vacuum Hybrid Slip Casting," J. Korean Ceram. Soc., 49 [6] 592-600 (2012). https://doi.org/10.4191/kcers.2012.49.6.592
  16. J. L. Amoros, E. Sanchez, V. Cantavella, and J. C. Jarque, "Evolution of the Mechanical Strength of Industrially Dried Ceramic Tiles during Storage," J. Eur. Ceram. Soc., 23 [11] 1839-45 (2003). https://doi.org/10.1016/S0955-2219(02)00425-9
  17. R. M. German, Powder Metallurgy & Particulate Materials Processing; pp. 155-83, Metal Powder Industries Federation, 2005.

피인용 문헌

  1. Reducing the density deviation in alumina by pressure-vacuum hybrid slip casting by employing powders with different particle sizes vol.8, pp.2, 2018, https://doi.org/10.1080/21870764.2020.1749372
  2. Modification of a low-soda easy-sintered α-Al2O3 powder for the application in semiconductor/display production equipment vol.38, pp.12, 2018, https://doi.org/10.1007/s11814-021-0915-0