采用TiH_2粉末和造孔剂NH_4HCO_3烧结多孔钛_英文_.pdf

Rare Metal Materials and Engineering Volume 40, Suppl. 2, July 2011 Cite this article as: Rare Metal Materials and Engineering, 2011, 40(S2): 084-086. ARTICLE Powder Sintering of Porous Ti Compact from TiH Powder 2 and Pore Forming Agent NH HCO 4 3 Li Yonghua, Fan Tao, Zhang Ning Shenyang Ligong University, Shenyang 110159, China Abstract: Porous Ti compact was fabricated from the mixed powder of TiH and pore forming agent NH HCO using a powder 2 4 3 sintering method. The research results indicate that the addition of NH HCO powder has little effect on the phase compositions of the 4 3 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 NH4HCO3 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. Key words: powder sintering; porosity; compressive property; pore characteristics Biomedical compact metals such as Ti and its alloys, of pore forming agent amount on the phase composition,