Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Optimization of Rod-shaped γ-LiAlO2 Particle Reinforced MCFC Matrices by Aqueous Tape Casting

수계 테이프 케스팅 법에 의한 봉상 γ-LiAlO2 입자 강화 MCFC 매트릭스 제조 공정의 최적화

  • Choi, Hyun-Jong (School of Advanced Materials Science and Engineering, College of Engineering, Yonsei University) ;
  • Shin, Mi-Young (School of Advanced Materials Science and Engineering, College of Engineering, Yonsei University) ;
  • Hyun, Sang-Hoon (School of Advanced Materials Science and Engineering, College of Engineering, Yonsei University) ;
  • Lim, Hee-Chun (KEPRI, Korea Electric Power Research Institute)
  • 최현종 (연세대학교 신소재공학과) ;
  • 신미영 (연세대학교 신소재공학과) ;
  • 현상훈 (연세대학교 신소재공학과) ;
  • 임희천 (한국전력공사 전력연구원)
  • Published : 2009.05.31
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Abstract

Rod-shaped particle reinforced $LiAlO_2$ matrices for MCFC were fabricated by an aqueous tape-casting technique. The hydrolysis reaction and agglomeration of $\gamma-LiAlO_2$ particles in aqueous slurries were inhibited by additions of $LiOH{\cdot}H_2O$ and glycerin to the aqueous $\gamma-LiAlO_2$ slurry. The tape-casting, performed using the aqueous slurry containing protein albumin, was fast and led to an effective drying at casting temperature range of $60{\sim}65^{\circ}C$. The strength of the particle reinforced matrix was improved about 4 times compared to that of matrix without reinforcement. Pore size distribution ($0.1{\sim}0.4{\mu}m$) and porosity ($50{\sim}60%$) of the reinforced matrices were determined to be appropriate for the MCFC matrix. The aqueous tape casting process is not only environmental-friendly but also efficient for fabricating MCFC matrices compared to non-aqueous tape casting.

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References

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