摘要
研究了不同成分HA Ti和HA BG Ti复合生物材料的烧结收缩率、微观结构、物相结构与力学性能之间的关系。结果表明 :当钛含量达到 4 5 %～ 6 5 %时 ,HA Ti系复合材料的抗压强度达到最低值 76MPa左右 ,呈谷值分布 ,而HA BG Ti系复合材料的抗压强度却达到最大值 180MPa左右 ,呈峰值分布 ;HA Ti系复合材料的抗弯强度为 5 8～ 79MPa ,而HA BG Ti系复合材料的抗弯强度在钛含量为 4 5 %～ 6 5 %时出现最大值 16 4MPa ;HA BG Ti系的抗压强度和抗弯强度均高于HA Ti系的抗压强度和抗弯强度。物相分析和微观结构分析表明 :HA BG Ti复合陶材料中的HA Ti相间界面依靠生物玻璃以复杂的强键相结合 ,是HA BG Ti系复合材料的力学性能优于HA Ti二元系复合材料力学性能的原因。
Sintering shrinkage and strength as well as their relationships with microstructure of HA-Ti binary and HA-BG-Ti ternary biocomposites were studied. The results show that the compressive strengthes of HA-Ti binary and HA-BG-Ti ternary composites reach to the minimum of 76 MPa and the maximum of 180 MPa when Ti contents on the scale of 45% and 65% respectively. Comparing with the values between 58～79 MPa of HA-Ti binary composites' bending strength, HA-BG-Ti ternary composite's bending strength reaches to its maximum of 164 MPa when Ti contents equal to 45%～65% around. Brittle phase including calcium titanate and calcium carbonate and flaws impaire the combination between Ti and HA particles in HA-Ti binary. Otherwise, a complex strong binding force accompanied by elemental diffusion of Si and Ti in HA-BG-Ti ternary composites could theoritically explain the great difference of mechanical properties between HA-BG-Ti ternary composites and HA-Ti binary composites.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2003年第6期1361-1367,共7页
The Chinese Journal of Nonferrous Metals
基金
国家自然科学基金资助项目 (5 0 1740 5 9)
