Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Fabrication of Low TEC Machinable Ceramics using Domestic Pyrophillite

국내산 납석을 이용한 저팽창성 Machinable Ceramics의 제조

  • 김재국 (전남대학교 공과대학 무기재료공학과) ;
  • 양삼열 (전남대학교 공과대학 무기재료공학과) ;
  • 정창주 (전남대학교 공과대학 무기재료공학과)
  • Published : 1991.09.01
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Abstract

Machinable ceramics containing ${\beta}$-spodumene crystal was fabricated by melting method using domestic pyrophyllite. Raw materials were batched by molar ratio of 8:2, 7:3, 6:4, and 5:5 for fluorophlogopite and ${\beta}$-spodumene. These compounds were melted at 1450$^{\circ}C$ for 1 hr and formed in graphite mold. Base glasses were heat-treated according to 2-step schedule which was determined from DTA, XRD analysis and SEM observation. Fabricated machinable ceramics have excellent themal, chemical properties and machinability.

Keywords

References

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