生物可降解Zn-Nb复合材料的制备及性能研究  

Preparation and Properties of Biodegradable Zn-Nb Composite Materials

作　　者：韩书扬 姚润华 杭瑞强 姚晓红[1] HAN Shuyang;YAO Runhua;HANG Ruiqiang;YAO Xiaohong(Shanxi Key Laboratory of Biomedical Metal Materials,College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原理工大学材料科学与工程学院医用金属材料山西省重点实验室,太原030024

出　　处：《太原理工大学学报》2022年第4期588-599,共12页Journal of Taiyuan University of Technology

基　　金：中央引导地方科技发展资金项目(YDZJSX2021A019);山西省自然科学基金面上项目(20210302123100)。

摘　　要：以Zn粉和Nb粉为原料,通过真空热压烧结工艺制备了Zn-xNb(x=0,0.5,1,3,5,10)复合材料,对其表面形貌和物相进行表征,并探究了Nb的添加对材料力学性能、腐蚀降解行为以及细胞相容性的影响。结果表明:Nb颗粒呈层片状分布于Zn基体中;随着Nb含量的增加,复合材料的压缩屈服强度先增加后降低,其中Zn-0.5Nb性能最佳;Nb含量的增加促进了复合材料的降解;相比于纯Zn,可能是由于Nb的添加减少了Zn^(2+)的释放,因此Nb含量越高的试样表现出越好的细胞相容性。Zn-xNb(x=0, 0.5, 1, 3, 5, 10%) composites were prepared by vacuum heating-press sintering process with Zn and Nb powders as raw materials. The surface morphology and phases of the composites were characterized. The effects of Nb addition on the mechanical properties, corrosion degradation behavior, and cytocompatibility of the composites were investigated. The results show that the Nb particles are distributed in the Zn matrix in a lamellar shape. With the increase of Nb content, the compressive yield strength of the composite increases first and then decreases, and Zn-0.5 Nb shows the best performance. The increase of Nb content accelerates the degradation of the composites. Compared with pure Zn, the samples with high Nb content show better cytocompatibility, probably owing to the addition of Nb reducing the release of Zn.

关 键 词：热压烧结 生物可降解材料 锌-铌复合材料 腐蚀降解行为 细胞相容性 

分 类 号：TB331[一般工业技术—材料科学与工程]