Microchannelled hydroxyapatite components by sequential freeze drying and free pressureless spark plasma sintering
Microchannelled hydroxyapatite components by sequential freeze drying and free pressureless spark plasma sintering
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DOI：
10.1179/1743676111y.0000000067
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发表时间：
2012-08
影响因子：
2.2
通讯作者：
Y.S. Lin;Marc A. Meyers;E. Olevsky
中科院分区：
文献类型：
--
作者：
Y.S. Lin;Marc A. Meyers;E. Olevsky
开发了一种用于制备羟基磷灰石（HAP）基微通道结构的新型冷冻干燥、自由无压放电等离子烧结（FPSPS）工艺序列。处理后的试样，其特征在于通过扫描电子显微镜，X射线衍射，孔隙率测量和压缩测试。不同加载方向的抗压强度不同。在平行于通道方向的加载方向上的压缩强度高于在垂直于通道方向的加载方向上的压缩强度。因此，冷冻干燥和FPSPS条件的操作应该能够优化加工后的多孔HAP基微通道结构的最终性能。
Novel freeze drying, free pressureless spark plasma sintering (FPSPS) processing sequence is developed for the production of hydroxyapatite (HAP) based microchannelled structures. The processed specimens are characterised by scanning electron microscopy, X-ray diffraction, porosity measurements and compressive tests. The compressive strength is different for different loading orientations. The compressive strength is higher in the loading direction parallel to the channel direction than the compressive strength in the loading direction perpendicular to the channel direction. Manipulation of freeze drying and FPSPS conditions should thereby enable the optimisation of the final properties of the processed porous HAP based microchannelled structures.