Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Preparation of Machinable Ceramics Using Domestic Pyrophyllite

국내산 납석을 이용한 Machinable Ceramics의 제조

  • 정창주 (전남대학교 공과대학 무기재료공학과) ;
  • 정회준 (전남대학교 공과대학 무기재료공학과) ;
  • 양삼열 (조선내화(주))
  • Published : 1991.07.01
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Abstract

In this study, high quality machinable ceramics was prepared from the K2O-MgO-Al2O3-SiO2-B2O3-F glass system using domestic pyrophyllite. The mixture of pyrophyllite and additives was melted at 1450$^{\circ}C$ for 1 hour and formed in a graphite mold. The base glass was heat-treated at 600$^{\circ}C$ to 1200$^{\circ}C$ with interval of 50$^{\circ}C$ for 3 hours identified by XRD. Crystalline phase were confirmed by XRD and their microstructure was observed by SEM. The glass ceramics which was prepared by heat treatment of base glass at 1150$^{\circ}C$ for short time has good physical, mechanical, thermal, chemical properties and machinability.

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References

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