摘要
钇稳定的二氧化镐中分别掺杂1％，5％，15％的羟基磷灰石来制备生物性能良好，且具有较好的机械强度和断裂韧性的生物复合材料以满足承载方面的需要。对其力学性能、微观结构和生物性能进行了研究，用扫描电镜（SEM）、x射线衍射仪（XRD）等对复合材料进行了分析。结果表明掺杂羟基磷灰石的复合材料的维氏硬度远远高于单一羟基磷灰石的硬度，几乎接近于二氧化镐的硬度。最大的抗弯强度为976.21MPa，K1c为5.2—10.4MPa·m^1/2。生物模拟试验表明该种复合材料具有良好的骨传导作用，具有生物活性，是一种较理想的骨植入材料。
Yttria - stabilized zirconia （YSZ） ceramic doped with 1%, 5 %, 15 % amount of hydroxyapatite （ HA）, repectively,were developed in order to produce a composite biomaterial with a high bioactivity as well as sufficient mechanical strength for load - bearing applications. The maximum Vickers hardness for HA - doped YSZ （HA -Z）composite was much greater than that of HA ceramics and almost the same as that of YSZ. The maxi- mum bending strength was 976.21 MPa, and K1c was between 5.2—10.4MPa·m^1/2. The entire covering by bone-like apatite after a 8 -day immersion in simulated body fluid suggested that the HA -Z composite had bioactivities.
出处
《昆明理工大学学报（理工版）》
北大核心
2009年第6期15-18,共4页
Journal of Kunming University of Science and Technology(Natural Science Edition)
