Fabrication and Mechanical Properties of Porous Ti/HA Composites for Bone Fixation Devices

被引：22
|
作者：
Nomura, Naoyuki [1 ]
Sakamoto, Kozue [2 ]
Takahashi, Katsuya [2 ]
Kato, Seiji [2 ]
Abe, Yasunori [3 ]
Doi, Hisashi [1 ]
Tsutsumi, Yusuke [1 ]
Kobayashi, Masahiro [2 ]
Kobayashi, Equo [4 ]
Kim, Woo-Jong [5 ]
Kim, Kyo-Han [5 ]
Hanawa, Takao [1 ,6 ]
机构：
[1] Tokyo Med & Dent Univ, Inst Biomat & Bioengn, Tokyo 1010062, Japan
[2] Chiba Inst Technol, Fac Engn, Dept Life & Environm Sci, Tsudanuma 2750016, Japan
[3] Tokyo Med & Dent Univ, Fac Dent, Tokyo 1138510, Japan
[4] Tokyo Med & Dent Univ, Grad Sch Engn, Dept Met & Ceram Sci, Tokyo 1528552, Japan
[5] Kyungpook Natl Univ, Sch Dent, Dept Dent Biomat, Taegu, South Korea
[6] Univ Tokyo, Grad Sch Engn, Tokyo 1138650, Japan
来源：
MATERIALS TRANSACTIONS | 2010年 / 51卷 / 08期
基金：
新加坡国家研究基金会;
关键词：
porous titanium compacts; hydroxylapatite (HA); composites; Young's modulus; DENTAL IMPLANTS; TITANIUM; HYDROXYAPATITE; ALLOYS;
D O I：
10.2320/matertrans.M2010092
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Porous Ti (pTi)/hydroxylapatite (HA) composites were fabricated by an infiltration method in a vacuum and sintering. The Young's modulus of the composites was evaluated before and after the immersion in Hanks' solution. The strength of the composites was also evaluated by four-point bending test. The Young's modulus of the compacts was governed by the porosity and was comparable to the human bone in the porosity range from 24 to 34%. The Young's modulus of sintered pTi/HA composites was larger than that of pTi. The Young's modulus of the sintered pTi/HA composites decreased after immersion in Hanks' solution. The proof and bending strengths of the sintered pTi/HA composites were larger than those of pTi. Solid solution hardening of Ti by oxygen contributed the increase of the proof strength. [doi:10.2320/matertrans.M2010092]
引用
收藏
页码：1449 / 1454
页数：6
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