Dense/Porous Layered Apatite Ceramics Prepared by Post-Sintering
Dense/Porous Layered Apatite Ceramics Prepared by Post-Sintering
复制标题
后烧结制备致密/多孔层状磷灰石陶瓷
DOI：
10.2109/jcersj.97.566
复制
发表时间：
1989
期刊：
影响因子：
--
通讯作者：
M. Yoshimura
中科院分区：
文献类型：
--
作者：
K. Ioku;S. Sōmiya;M. Yoshimura
以两种烧结性能不同的羟基磷灰石粉末为原料，制备了多孔层致密羟基磷灰石陶瓷。在1050℃的空气中正常烧结3h后，在1000℃下，在200MPa氩气下加热加热1h，制备出无荚膜的陶瓷。水热法合成的高烧结性HAp粉末提供了陶瓷的致密层，而低烧结性的商用HAp粗粉提供了多孔层。陶瓷致密层的相对密度为99.9%以上，透明度为0.54μm；多孔层的孔隙度为43%左右，孔径为1 ~ 10μm。
Dense Hydroxyapatite (HAp) ceramics with porous layer were prepared from two types of HAp powders with different sinterability. The ceramics were prepared by post-sintering by HIP'ing at 1000°C, under 200MPa of Ar for 1h without any capsules, after normal sintering in air at 1050°C for 3h. The HAp powders with high sinterability synthesized hydrothermally provided the dense layer of the ceramics, and the commercial HAp coarse powders with lower sinterability provided the porous layer. The dense layer of the ceramics showed transparency with above 99.9% relative density with a median grain size of 0.54μm, while the porous layer of the ceramics showed about 43% porosity with the pore size of about 1 to 10μm.