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冲击波改性的羟基磷灰石陶瓷及其体外溶解性能 预览 被引量:4

In vitro dissolution study on the shock-activating hydroxyapatite ceramic
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摘要 分析了经冲击波处理的羟基磷灰石粉末的活性,比较了由经过冲击波处理的羟基磷灰石粉末及未经冲击波处理的羟基磷灰石粉末烧结得到的两种陶瓷在模拟体液中的溶解性能.研究结果表明:利用冲击波技术处理羟基磷灰石,能达到使羟基磷灰石粉末细化与均化的目的,并在粉末内产生晶格畸变,提高烧结活性及强度,由这种粉末制得的陶瓷在模拟体液中溶解较弱,性能更加稳定. The activation of hydroxyapatite (HA) powder treated by shock wave was analyzed and the dissoluble properties of two kinds of ceramics made from the shocked- and unshocked-treatment HA powders were compared in this paper. The grain size refinement, homogenization and dislocation of lattice in shocked HA powders analyzed by XRD and SEM can promote sintering of HA ceramics, which can obviously enhance the strength of HA ceramics. Weight changes of HA powders from the shocked HA powders after immersing in simulated body fluid (SBF) were smaller, Ca2+ concentrations and pH values changes of SBF are also smaller than those of HA ceramics from the unshocked HA powders. The HA ceramics from the shocked HA powders were more stable in the SBF.
作者 廖其龙 郑昌琼 LIAO Qi-long~1, ZHENG Chang-qiong~2 (1. School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China; 2. College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China)
出处 《功能材料》 EI CAS CSCD 北大核心 2005年第1期 157-159,共3页 Journal of Functional Materials
关键词 羟基磷灰石 冲击波活化 溶解性能 生物医用陶瓷 Biomaterials Ceramic materials Dissolution Scanning electron microscopy Shock waves X ray diffraction analysis
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