한국세라믹학회지 (Journal of the Korean Ceramic Society)

  • 제23권3호
  • /
  • Pages.67-77
  • /
  • 1986
  • /
  • 1229-7801(pISSN)
  • /
  • 2234-0491(eISSN)
한국세라믹학회 (The Korean Ceramic Society)
권호 표지

$CaO-P_2O_5$계 결정화유리로 된 생체세라믹스의 합성에 관한 연구

Synthesis of Bioceramics Based on Glass-Ceramics of $CaO-P_2O_5$ System

  • 김병호 (고려대학교 재료공학과) ;
  • 박인용 (고려대학교 재료공학과)
  • 발행 : 1986.03.01
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초록

various properties and manufacturing conditions were investigated in order to synthesize the glass-ceramics of $CaO-P_2O_5$ system for bioceramics. Compositions of easy unidirectional crystallization were between 47.5 and 50, 0mol% CaO For the glass rods prepared by pulling them to about 3 times the original rod length unidirectional crystallization was easier than original glass rods. These samples were crystallized in the axial direction at 15${\mu}{\textrm}{m}$/min in an electric furnace with a temperature gradient of about 3$0^{\circ}C$/cm at 57$0^{\circ}C$. Bending strengths of surface and unidirectionally crystallized samples were investigated with various CaO/$P_2O_5$ molar ratios. The bending strengths of unidirectionally crystallized samples were larger than those of surface -crystallized samples and the value of 47.5CaO.52.5 $P_2O_5$ was 1650kg/$cm^2$. XRD patterns showed that major phase is $\beta$-Ca(PO3) with minor phase 2CaO.$P_2O_5$ Relative crystal-linity of surface-crystallized sample was inversely propertional to the bending strenth. SEM of fracture surface of unidirectionally crystallized samples revealed an unidirectionally aligned structures.

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