Electrical Properties of Apatite Ceramics with a Microstructure Controlled by Y3+ Substitution
Electrical Properties of Apatite Ceramics with a Microstructure Controlled by Y3+ Substitution
复制标题
Y3取代控制微结构磷灰石陶瓷的电性能
DOI：
10.2109/jcersj1950.94.1092_837
复制
发表时间：
1986
影响因子：
1.1
通讯作者：
M. Nagai
中科院分区：
文献类型：
--
作者：
H. Owada;K. Yamashita;T. Umegaki;T. Kanazawa;M. Nagai
红外光谱表明，随着Y含量的增加，羟基伸缩吸收（3600 cm ~（-1））减弱，出现了较弱的羟基磷灰石吸收峰。XRD分析表明，Yx-Ca-HAp的结构为磷灰石相，在x=0 ~ 0.7范围内，电导率随Y含量的增加而增加，当Y含量为1.0时，电导率急剧下降。在x=1.0 ~ 2.0范围内，随Y ~（3+）含量的增加而略有增加。在x=1.0 ~ 2.0范围内，样品的导电激活能均大于其他区域（x≤0.7）的激活能，表明低Y ~（3+）浓度区（x≤0.7）样品的导电机制与其他区域（x≥1.0）的不同。
It was found by the IR spectra that absorption by OH stretching (3600cm-1) decreased with increase of yttrium content and weak absorption peaks of oxyhydroxyapatite appeared in Yx-Ca-HAp. It was confirmed by XRD analysis that structure of Yx-Ca-HAp consisted of only apatitic phase.Electrical conductivity increased with yttrium concentration in the region x=0-0.7, and it decreased abruptly with yttrium content to x=1.0. In the region btween x=1.0 and 2.0, it increased slightly with content of Y3+. Calculated activation energies of conduction of the samples in the region between x=1.0 and 2.0 were larger than that of ones in the other region (x≤0.7).The above results suggests that the conduction mechanism of the samples in the low Y3+ concentration region (x≤0.7) is different from that of the other (x≥1.0).