Highly porous hydroxyapatite bioceramics with interconnected pore channels using camphene-based freeze casting
Highly porous hydroxyapatite bioceramics with interconnected pore channels using camphene-based freeze casting
复制标题
DOI：
10.1016/j.matlet.2006.08.065
复制
发表时间：
2007-05-01
影响因子：
3
通讯作者：
Kim, Hae-Won
中科院分区：
文献类型：
--
作者：
Lee, Eun-Jung;Koh, Young-Hag;Kim, Hae-Won
采用冷冻铸造法制备了多孔羟基磷灰石（HA）生物陶瓷。在该方法中，制备了具有不同HA含量（10、15和20体积%）的HA/石墨烯浆料。通过在60 ℃下球磨制备，然后在室温下浇铸到模具中。该方法允许制造的样品具有完全互连的孔道，这是通过经由升华去除冷冻的羟基磷灰石网络和通过在1250 ℃下烧结高度填充的HA粉末网络3小时来实现的致密HA壁。随着初始HA含量从10体积%增加到20体积%，孔隙率从75%降低到56%，而抗压强度从0.94 MPa显著提高到17 MPa。(c)2006 Elsevier B. V.保留所有权利。
We fabricated highly porous hydroxyapatite (HA) bioceramics using the camphene-based freeze casting method. In this method, HA/camphene slurries with various HA contents (10, 15, and 20 vol.%) were prepared by ball-milling at 60 degrees C and then cast into a mold at room-temperature. This method allowed the fabricated sample to have completely interconnected pore channels by removing the frozen camphene network via sublimation and dense HA walls by sintering the highly packed HA powder networks at 1250 degrees C for 3 h. As the initial HA content was increased from 10 to 20 vol.%, the porosity decreased from 75 to 56%, while the compressive strength remarkably increased from 0.94 to 17 MPa. (c) 2006 Elsevier B.V. All rights reserved.