泡沫钛力学性能重复性初探  

Primary investigation on mechanical reproducibility of titanium foams

作　　者：肖健[1] 崔豪[1] 邱贵宝[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400044

出　　处：《功能材料》2015年第22期22015-22021,共7页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51174243);中央高校基本科研业务资助项目(106112015CDJZR135502)

摘　　要：重复性生产是实现新材料大规模商业化应用的重要前提。泡沫钛作为新近出现的一类新型泡沫金属,在生物医学骨科植入替代材料和电池催化剂载体等领域已展现出了诱人的应用前景。对造孔剂技术制备泡沫钛力学性能的重复性进行了初步探索。结果表明,孔隙率具有可重复性,而压缩性能如弹性模量和抗压强度的重复性差。讨论发现,力学性能重复性差主要归因于工艺中微细结构和孔壁缺陷不可控等因素造成的。从工艺的角度看,增大造孔剂的含量或减小其尺寸大小,是提高泡沫钛力学性能重复性的一个可行路径。Repetitive manufacturing is the important premise of a novel material with a large-scale commercial applications.Titanium foam served as a novel metal foam has been obtained a attractive application prospect in fields of biomedical bone substitutes and catalyst carrier in battery.In this article,the mechanical reproducibility of titanium foams prepared by the well-established space holder technique was initially investigated.The results show that the porosity was reproducible while the reproducibility of mechanical properties as Young's modulus and compressive strength of titanium foams were poor.It was found that the poor reproducibility of mechanical properties was mostly attributed to the uncontrollable factors as the microstructure and cell-walls defects obtained from the preparation process.From the point of view of process,it is a feasible path to improve the mechanical reproducibility of titanium foams through increasing the content or decreasing the size of the spacer holder material.

关 键 词：多孔材料 钛 泡沫 力学性能 重复性 

分 类 号：TG146.2[一般工业技术—材料科学与工程]