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无机材料学报

无机材料学报

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低温烧结AW-Al2O3生物活性水基流延膜

+曾宇平; 江东亮; GreilPeter+   

  1. 中国科学院上海硅酸盐研究所高性能结构陶瓷; 超微结构开放实验室 上海 200050; +University Erlangen Nuremberg, Institute of Materials Science D-91058 Erlangen; Germany
  • 收稿日期:1998-01-07 修回日期:1999-02-08 出版日期:1999-08-20 网络出版日期:1999-08-20

Aqueous Tape casting of Bio activity A/W-Al2O 3 with Low Temperature Sintering

ZENG Yu-Ping, JIANG Dong-Liang, Grail Peter   

  1. State Key Lab of High Performance Cearmics and Superfine Structure; Shanghai Institute of Ceramics; Chinese Academy of Sciences Shanghai 200050 China; + The University of Nuernberg-erlangen, Materials Sciences Department, D-91058 Erlangen, Germany
  • Received:1998-01-07 Revised:1999-02-08 Published:1999-08-20 Online:1999-08-20

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摘要： 为了实现 Ａｌ２ Ｏ３ 和羟基磷灰石（ Ｈ Ａ Ｐ） 的同步烧结， 必须降底 Ａｌ２ Ｏ３ 的烧结温度， 选用具有生物活性和较低熔点的 Ａ/Ｗ 生物玻璃作为 Ａｌ２ Ｏ３ 液相烧结的添加剂， 利用流延成型工艺， 制得了适合流延成型的水基 Ａ/ Ｗ- Ａｌ２ Ｏ３ 浆料及流延膜， 分析了影响浆料及流延成型的各种因素在烧结过程中， 由于玻璃挥发而导致失重， 所以样品的密度受烧结温度和烧结时间的影响， 但在１３００‘ Ｃ 时，１０ｗｔ％ Ａ/ Ｗ-Ａｌ２ Ｏ３ 的烧结密度可达９９１７ ％ 因此在１３００‘ Ｃ 左右可以实现 Ａｌ２ Ｏ３ 和 Ｈ Ａ Ｐ 的同步烧结，使制备具有多孔 Ｈ Ａ Ｐ和 Ａｌ２ Ｏ３ 衬底的多层生物活性植入体成为可能

关键词: 流延成型, 浆料, 生物玻璃, 生物活性植入体

Abstract: For the synchronous sinter of Al2O3 and HAP, it is necessary to decrease the sintering temperature of Al2O3 to prevent decomposition of HAP.
A/W bioglass which has low melting point and bioactivity was selected as the liquid phase sintering additive, perfect A/W-Al2O3 slurries and A/W-Al2O3
tapes were fabricated and various factors which havegreat effect on the properties of slurries and the processing of tape casting
were investigated. Because the bioglass evaporates easily at high temperature, the densities of sample are greatly effected by sintering time and temperature.
But the relative density of the samples prepared at 1300℃ can be reached up to 99.17%, therefore, the A/W-Al2O3 and HAP tapes can be sintered
together at low temperature, it is possible to prepare the laminated bioactivity implant with porous bioactive HAP and A/W-Al2O3 substrate.

Key words: tape casting, slurry, bioglass, bioactivity, implant

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