采用TiH_2粉末和造孔剂NH_4HCO_3烧结多孔钛(英文)  

Powder Sintering of Porous Ti Compact from TiH_2 Powder and Pore Forming Agent NH_4HCO_3

作　　者：李永华[1] 范涛[1] 张宁[1] 

机构地区：[1]沈阳理工大学,辽宁沈阳110159

出　　处：《稀有金属材料与工程》2011年第S2期84-86,共3页Rare Metal Materials and Engineering

基　　金：Foundation items: the Office of Scientific and Technology in Liaoning Province in China (20061022);Office of Education in Liaoning Province in China(20081212)

摘　　要：采用 TiH2和造孔剂 NH4HCO3混合粉末,利用粉末烧结法制备了多孔钛。研究表明,NH4HCO3的添加对于烧结的多孔钛的相组成几乎没有影响。多孔钛的孔隙度、平均孔隙尺寸、压缩强度和压缩弹性模量随 NH4HCO3添加量的增加而急剧下降。多孔钛可用添加不同量的造孔剂来调整孔隙结构和力学性能。独特的孔隙结构和适宜的力学性能满足多孔植入材料的基本要求。表明烧结的多孔钛是有前景的多孔植入候选材料。Porous Ti compact was fabricated from the mixed powder of TiH2 and pore forming agent NH4 HCO3 using a powder sintering method. The research results indicate that the addition of NH4 HCO3 powder has little effect on the phase compositions of the sintered porous Ti compact. Porosity, mean pore size, compressive strength and elastic modulus in compression of the sintered porous Ti compacts decrease abruptly with more of NH4 HCO3 added. The unique porous structure and appropriate mechanical property adjusted by adding different amounts of pore forming agent for the sintered porous Ti compact meet the basic requirements of porous implant material. It indicates that the sintered porous Ti compact is a promising biomedical porous implant candidate.

关 键 词：粉末烧结 孔隙度 压缩性能 孔隙特性 

分 类 号：TF124.5[冶金工程—粉末冶金]