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Hydroxyapatite-Bioglass-Titanium Biomaterials Used as Dense Bulk in Double-layer Biomimetic Composite
作者姓名:Jianpeng ZOU  Jianming RUAN  Baiyun HUANG  Jianben LIU and Zhigang ZHAO State Key Laboratory for Powder Metallurgy  Central South University  Changsha  China
作者单位:Jianpeng ZOU,Jianming RUAN,Baiyun HUANG,Jianben LIU and Zhigang ZHAO State Key Laboratory for Powder Metallurgy,Central South University,Changsha 410083,China Department of Chemistry,Jishou University,Jishou 416000,China
摘    要:Sintering shrinkage, compressive strength, bending strength, chemical composition and their relationships with mi-crostructure of HA-Ti and HA-BG-Ti biomaterials were studied. The results show that sintering shrinkage curve of HA-BG-Ti composite changes just like S shape (23.1%-16.2%-21.8%-17.1%) with increase of Ti content, and sintering shrinkage of HA-BG-Ti composite is always higher than that of HA-Ti composite. The approach also indicates that compressive strength and bending strength of HA-BG-Ti composite are always higher than that of HA-Ti composite. Basically, with its compressive strength and bending strength equaling to 211.5 MPa and 132.1 MPa respectively, HA-10 vol. pct BG-60 vol. pct Ti composite can meet the mechanical properties requirements of the outer dense bulk. Furthermore, microstructure analysis shows that interfacial integration of HA-BG-Ti composite is better than that of HA-Ti composite. From X-ray diffraction (XRD) and SEM-EDAX analysis, brittle new phases including calcium ti


Hydroxyapatite-Bioglass-Titanium Biomaterials Used as Dense Bulk in Double-layer Biomimetic Composite
Jianpeng ZOU,Jianming RUAN,Baiyun HUANG,Jianben LIU and Zhigang ZHAO State Key Laboratory for Powder Metallurgy,Central South University,Changsha ,China.Hydroxyapatite-Bioglass-Titanium Biomaterials Used as Dense Bulk in Double-layer Biomimetic Composite[J].Journal of Materials Science & Technology,2004,20(5):627-630.
Authors:Jianpeng ZOU  Jianming RUAN  Baiyun HUANG  Jianben LIU  Zhigang ZHAO
Affiliation:State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China...
Abstract:Sintering shrinkage, compressive strength, bending strength, chemical composition and their relationships with microstructure of HA-Ti and HA-BG-Ti biomaterials were studied. The results show that sintering shrinkage curve of HA-BG-Ti composite changes just like S shape (23.1%-16.2%-21.8%-17.1%) with increase of Ti content, and sintering shrinkage of HA-BG-Ti composite is always higher than that of HA-Ti composite. The approach also indicates that compressive strength and bending strength of HA-BG-Ti composite are always higher than that of HA-Ti composite. Basically, with its compressive strength and bending strength equaling to 211.5 MPa and 132.1 MPa respectively, HA-10 vol. pct BG-60 vol. pct Ti composite can meet the mechanical properties requirements of the outer dense bulk. Furthermore, microstructure analysis shows that interfacial integration of HA-BG-Ti composite is better than that of HA-Ti composite. From X-ray diffraction (XRD) and SEM-EDAX analysis, brittle new phases including calcium titanate and calcium carbonate are detected in HA-Ti composite. New phases in HA-Ti composite and complex strong binding force accompanied by elemental diffusion of Si, Ti in HA-BG-Ti composite can explain theoretically the great difference of mechanical properties of HA-Ti and HA-BG-Ti composites.
Keywords:Hydroxyapatite-Titanium (HA-Ti)  Hydroxyapatite-Bidoglass-Titanium (HA-BG-Ti)  Sintering shrinkage  Mechanical properties  Microstructure  EDAX analysis
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