한국세라믹학회지 (Journal of the Korean Ceramic Society)

  • 제32권2호
  • /
  • Pages.197-208
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  • 1995
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  • 1229-7801(pISSN)
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  • 2234-0491(eISSN)
한국세라믹학회 (The Korean Ceramic Society)
권호 표지

졸-겔 법에 의한 $\gamma-LiAlO_2$ 화이버의 제조 및 특성

Preparation and Characteristics of $\gamma-LiAlO_2$ Fibers by the Sol-Gel Method

  • 발행 : 1995.02.01
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초록

${\gamma}$-LiAlO2 fibers for fiber reinforced molten carbonate fuel cell (MCFC) matrix have been produced from LiAlO2 complex polymeric sols using the sol-gel process. The stable and spinnable LiAlO2 sols could be synthesized by mixing LiNO3 alcohol solutions in aluminum complex polymeric sols prepared through the condensationpolymerization reaction of 1 more of aluminum tri-sec-butoxide with 0.55 mole of mixed chelates (mole ratio of acetylaceton/triethanolamine=0.25/0.3). It was found that the viscosity range for fiber-spinning should be higher than 30 poise. The defect-free flexible ${\gamma}$-LiAlO2 fibers with the average tensile strength of 350 MPa could be obtained when the spinned fibers were heat-treated to 120$0^{\circ}C$ on the specified heating schedule after dried at room temperature.

키워드

참고문헌

  1. Japanese Pat. 60, 241, 656 Electrolyte Tile for MCFC H Ozu
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  3. U.S. Patent 4, 322, 382 Electrolyte Matrix for Molten Carbonate Fuel Cell C.L. Bushnell
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