无机材料学报

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微波等离子体烧结多孔HA/β-TCP双相生物陶瓷的研究

季金苟1,2; 冉均国1; 苟立1; 王方瑚1; 孙璐薇1   

  1. 1.四川大学无机材料系 成都 610065; 2. 重庆大学化学化工学院; 重庆 400044
  • 收稿日期:2003-07-28 修回日期:2003-11-17 出版日期:2004-07-20 网络出版日期:2004-07-20

Microwave Plasma Sintering of Porous HA/β-TCP Biphasic Bioceramics

JI Jin-Gou1,2; RAN Jun-Guo1; GOU Li1; WANG Fang-Hu1; SUN Lu-Wei1   

  1. 1.Department of Inorganic Materials; Sichuan University; Chengdu 610065; China; 2.College of Chemistry and Chemical Engineering; Chongqing University; Chongqing 400044; China
  • Received:2003-07-28 Revised:2003-11-17 Published:2004-07-20 Online:2004-07-20

摘要: 针对常规马弗炉烧结钙磷生物陶瓷温度高、烧结时间长,制品晶粒粗、强度和生物学活性难于同时提高的问题,采用微波等离子体新技术烧结了多孔HA/β-TCP双相生物陶瓷。实验结果显示,和常规马弗炉烧结法相比,微波等离子体烧结可在极短的加热时间内,制得线收缩率较大,晶粒尺寸小,抗压强度更大的多孔HA/β-TCP双相生物陶瓷。通过模拟体液的浸泡实验发现,其类骨磷灰石形成量也明显多于常规马弗炉烧结。这预示微波等离子体烧结是一种既能提高钙磷材料的力学强度,同时又可能增加其生物学活性的新烧结方法。

关键词: 多孔HA/β-TCP双相生物陶瓷, 微波等离子体, 烧结

Abstract: Aimed at solving the problems on sintering of Ca-P bioceramics by using a conventional furnace, such as high
sintering temperature, long holding time, large grain size and the difficulty to enhance the bioactive and the mechanical strength simultaneously,
porous HA/β-TCP biphasic bioceramics were prepared by using a microwave plasma method. The properties of specimens were compared to those of specimens
sintered by a conventional furnace. The comparison shows that plasma sintered specimens exhibit a higher linear shrinkage and densification
rate, smaller grain size and higher compressive strength. After incubating in SBF, the amount of bone-like apatite formed on the specimens sintered
by microwave plasma is more than that of specimens sintered by a conventional furnace. The results indicate that porous HA/β-TCP
biphasic bioceramics sintered by microwave plasma have better mechanical properties and also may have better biological properties.

Key words: porous HA/β-TCP biphasic bioceramic, microwave plasma, sintering

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