大孔径高孔隙率烧结泡沫钛的造孔剂研究述评-中国材料进展

文章信息/Info

Title:: Research Review of Space Holders of Sintered Titanium Foams with Large Pores and High Porosity

Author(s):: XIAO Jian1; QIU Guibao2; 1.School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China ?2. College of Materials Science & Engineering, Chongqing University, Chongqing 400044, China

Keywords:: porous material; metal foam; titanium alloy; powder metallurgy; space holder

摘要:: 大孔径高孔隙率烧结泡沫钛具有传统松装烧结多孔钛不可比拟的新奇物理化学性能，在航空航天、生物医学、新能源汽车和环境保护等领域有着广阔的应用前景。在作者及团队研究工作的基础上，对国内外用于制备大孔径高孔隙率泡沫钛材料的造孔剂进行了述评。总结了造孔剂的种类并根据它们的属性进行了分类，分析相关文献，筛选出了使用最为广泛的尿素、碳酸氢铵和氯化钠3种造孔剂，并重点介绍了它们的特性、脱除过程和制备的泡沫钛的结构特征，通过比较指出了造孔剂的发展趋势。

Abstract:: Because of their novel physical and chemical properties when compared with conventional loose sintered porous titanium, titanium foams with large pores and high porosity are attractive in fields of aerospace, biomedicine, new energy automobile and environmental protection. On the basis of the writers research, this paper gives a review on space holders in preparation of titanium foams. First of all, the category of space holders was summarized and classified in accordance with their attributes. Then the most extensive kinds of space holders: carbamide, NH4HCO3 and NaCl, were sieved from analyzing literatures and their speciality, removal process and structure features of obtained titanium foams were emphatically introduced. Finally the future development trends of space holders were pointed out.