The effect of zirconia reinforcing agents on the microstructure and mechanical properties of hydroxyapatite-based nanocomposites
The effect of zirconia reinforcing agents on the microstructure and mechanical properties of hydroxyapatite-based nanocomposites
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DOI：
10.1111/j.1551-2916.2005.00636.x
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发表时间：
2005-12-01
影响因子：
3.9
通讯作者：
Ying, JY
中科院分区：
文献类型：
--
作者：
Ahn, ES;Gleason, NJ;Ying, JY
在羟基磷灰石（HAP）的沉淀过程中引入水热处理的氧化锆胶体，制备了羟基磷灰石-氧化锆纳米复合材料。在氧化锆负荷量低于8 wt%时实现了氧化锆的高分散。当氧化锆含量为1.5 wt%时，维氏硬度得到优化。低载荷（1.5 wt%）的四方氧化锆能够将纳米晶HAP的弯曲强度从183 MPa提高到243 MPa。该hap -氧化锆纳米复合材料在50 MPa的负载下，在1000℃下烧结至满密度。HAP和氧化锆的平均晶粒尺寸保持在
A hydrothermally treated zirconia colloid was introduced during the precipitation of hydroxyapatite (HAP) to achieve an HAP-zirconia nanocomposite. High dispersion of zirconia was achieved at zirconia loadings below 8 wt%. Vickers hardness was optimized with a 1.5 wt% loading of zirconia. A low loading (1.5 wt%) of tetragonal zirconia was able to increase the bending strength of nanocrystalline HAP from 183 to 243 MPa. This HAP-zirconia nanocomposite was sintered to full density by 1000 degrees C under an applied load of 50 MPa. The average grain sizes of HAP and zirconia were maintained at