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多孔HAp-(β-Ca3(PO4)2)-Si3N4生物复合材料的力学性能与微观结构 预览 被引量:2

The Mechanical Properties and Microstructure of Porous Scaffold Made of HAp-(β-Ca3(PO4)2)-Si3N4 Biocomposite
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摘要 利用有机泡沫浸渍结合无压烧结的方法成功制备了大孔径、高孔隙率,不同氮化硅含量的HAp-(-βCa3(PO4)2)-Si3N4生物复合材料。测定了复合材料的抗压强度、显微硬度和孔隙率等性能。发现复合材料具有一定的抗压强度,其孔隙率较高,均超过45%。随着复合材料中氮化硅含量的增加,复合材料的孔隙率呈现出上升的趋势,但其显微硬度和抗压强度则先升高后降低。利用SEM观察了复合材料的断口形貌,发现复合材料中孔径从几十微米到500μm左右,孔隙相互贯通,可满足工程支架材料的要求。  HAp-(β-Ca3(PO4)2)-Si3N4 biocomposite with bigger pores and higher porosity was prepared by the method of organic foam soakage and pressureless sintering.The compressive strength,microhardness and porosity of the composite was mensurated.The composite has definite compressive strength and higher porosity which exceed 45%.With the increasing of Si3N4 the porosity of the composite expressed ascending trend but the compressive strength and microhardness decreased first and ascended later.The fracture mode of the composite was observed by SEM.The pores are penetrative and the diameter of most pores in the composite is between several micron and five hundred micron.The porosity and compressive strength of the scaffold should be desirable for bone tissue engineering.
作者 刘爱红 李爱民 孙康宁 LIU Ai-hong,LI Ai-min,SUN Kang-ning (1 Key Laboratory For Liquid Structure and Heredity of Materials Ministry of Education,Shandong University,Jinan 250061,China;2 Engineering Ceramics Key Laboratory of Shandong Province,Shandong University,Jinan 250061,China)
出处 《材料工程》 EI CAS CSCD 北大核心 2007年第10期 14-17,共4页 Journal of Materials Engineering
基金 国家自然科学基金资助项目(30540061,50672051)
关键词 羟基磷灰石(HAp) β-TCP(β-Ca3(PO4)2) 氮化硅(Si3N4) 多孔材料 hydroxyapatite(HAp) β-TCP(β-Ca3(PO4)2) silicon nitride Si3N4 porous material
作者简介 刘爱红(1981-),女,博士研究生,主要从事生物医学材料领域的研究工作,联系地址:山东省济南市山东大学(南校区)材料学院工程陶瓷实验室(250061)。
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