Sintering of Zirconia Coated Hydroxyapatite Particles
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- MATSUNO Takashi
- School of Medicine, Kitasato University
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- WATANABE Kenichi
- Nara Machinery Co., Ltd.
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- ONO Kenji
- Nara Machinery Co., Ltd.
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- KOISHI Masumi
- Faculty of Industrial Science and Technology, Science University of Tokyo
Bibliographic Information
- Other Title
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- ジルコニア被覆水酸アパタイト微粒子の焼結
- ジルコニア ヒフク スイサン アパタイト ビリュウシ ノ ショウケツ
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Abstract
The surface of relatively large-sized spherical fine HAP particles (Dm=9.32μm) were coated with smallsized fine PSZ particles (Dm=0.12μm) by a dry impact blending method. The surface of the HAP particles were found to be coated completely with the fine PSZ particles. The HAP/PSZ composite particles were sintered. The fracture toughness, microstructure and crystal phases of the sintered body were investigated. The fracture toughness of the sintered body consisting of 100% HAP was 1.1MPa·m1/2, although those of the sintered bodies with HAP/PSZ weight ratios of 10/2, 10/5 and 10/10 (made by hot pressing) were 1.8, 1.8 and 2.8MPa·m1/2, respectively. Direct particle connections were seldom observed, electron-microscopically, among the fine HAP particles in the sintered body of the composite particles. The sintered body comprises a three-dimensional and continuously-reticulate PSZ phase in which the spherical fine HAP particles are scattered. X-ray diffractometry revealed that the sintered bodies with HAP/PSZ molar ratios of 10/2, 10/5 and 10/10 made by the hot pressing consisted of HAP and PSZ (tetragonal zirconia) only. It could be understood, from these observations, that toughening by PSZ still remain effective in the sintered body of the composite particles.
Journal
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- Journal of the Ceramic Society of Japan
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Journal of the Ceramic Society of Japan 104 (1214), 945-948, 1996
The Ceramic Society of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390282680255648256
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- NII Article ID
- 110002291377
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- NII Book ID
- AN10040326
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- ISSN
- 18821022
- 09145400
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- NDL BIB ID
- 4047285
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed