Fabrication of Titanium Nitride/Apatite Functionally Graded Implants by Spark Plasma Sintering
Fabrication of Titanium Nitride/Apatite Functionally Graded Implants by Spark Plasma Sintering
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火花等离子烧结制备氮化钛/磷灰石功能梯度植入物
DOI：
10.2320/matertrans.45.3156
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发表时间：
2004
影响因子：
1.2
通讯作者：
T. Kawasaki
中科院分区：
文献类型：
--
作者：
H. Kondo;A. Yokoyama;M. Omori;A. Ohkubo;T. Hirai;F. Watari;M. Uo;T. Kawasaki
采用放电等离子烧结法（SPS）成功制备了氮化钛/羟基磷灰石功能梯度植入物（TiN/HAP）并对其性能进行了研究。通过在1100和1200℃、150 MPa压力下烧结制备了一端为TiN、另一端为HAP的功能梯度材料(FGM)。布氏硬度约为 H B 60，整个成分范围几乎一致。植入大鼠股骨骨干2周和8周后，几乎没有炎症，并且样品周围形成了新骨。通过使用TiN代替Ti，可以抑制烧结过程中HAP的分解，从而获得FGM的成功烧结和机械性能。
Titanium nitride/hydroxyapatite functionally graded implant (TiN/HAP) was successfully fabricated by spark plasma sintering method (SPS) and their properties were investigated. The functionally graded materials (FGM) withthe concentration from TiN at one end to HAP at the other were prepared by sintering at 1100 and 1200°C under the pressure of 150 MPa. The Brinell hardness was around H B 60, nearly uniform for the whole range of composition. After 2 and 8 week implantation in diaphysis of femur of rat, there was very little inflammation and the new bone was formed around the sample. By use of TiN instead of Ti, the decomposition of HAP during sintering process could be suppressed and the successful sintering of FGM and mechanical properties could be attained.