대한의용생체공학회:의공학회지 (Journal of Biomedical Engineering Research)

  • 제15권2호
  • /
  • Pages.189-194
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  • 1994
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  • 1229-0807(pISSN)
  • /
  • 2288-9396(eISSN)
대한의용생체공학회 (The Korean Society of Medical and Biological Engineering)
권호 표지

MgO-CaO-${SiO_2}-{P_2O_5}$계 Bioglass-Ceramic의 결정화에 미치는 $Al_2O_3$ 첨가의 영향(I)

Effect Of $Al_2O_3$on the Crystallization Of MgO-CaO-${SiO_2}-{P_2O_5}$ Bioglass-Ceramic System (I)

  • 이민호 (전북대학교 공과대학 금속공학과) ;
  • 배태성 (전북대학교 치과대학 재료학교실)
  • 발행 : 1994.06.01
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초록

Effects of ${AI_2O_3}/{P_2O_5}$ ratio on the crystallization of a series of glasses with the nominal composition of 41.4wt % $SiO_2$, 35.0wt % CaO, 20.6wt % (${P_2O_5}$+${AI_2O_3}$) and 3.0wt% MgO were investigated with DTA, XRD and SEM. The major crystalline phases are apatite and anorthite. The glass transition temperature ($T_g$) and the softening point ($T_s$) are shifted to the upper temperature by increasing $AI_2O_3$ content. The temperature of apatite crystallization ($T_{p1}$) is increased by $AI_2O_3$ content, but the tempera¬ture of anorthite crystallization ($T_{p2}$) is not affected significantly. With increased of $AI_2O_3$, the apatite crystallization is decreased, but anorthite crystallization is increased.

키워드

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