Crystal growth on bioactive glass sputter-coated alumina in artificial saliva
Crystal growth on bioactive glass sputter-coated alumina in artificial saliva
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DOI：
10.4012/dmj.2013-120
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发表时间：
2013-10-01
影响因子：
2.5
通讯作者：
Mizoguchi, Itaru
中科院分区：
文献类型：
--
作者：
Iijima, Masahiro;Hashimoto, Masanori;Mizoguchi, Itaru
本文采用射频磁控溅射法在氧化铝圆盘上沉积生物活性玻璃，研究其在人工唾液中的成晶能力。将生物活性玻璃涂层样本浸入人工唾液中1周和6个月。用扫描电子显微镜（SEM）观察试样，用能谱仪（EDS）测定成分。通过拉曼光谱分析和显微X射线衍射分析在样品上形成的晶体。SEM照片显示，浸泡1周后，样品表面形成针状结构，浸泡6个月后，样品表面形成片状结构。EDS显示针状和片状结构都富含Ca和P。片状结构的拉曼和微XRD光谱显示可能对应于磷酸钙的峰。因此，当浸入人工唾液中时，生物活性玻璃涂层氧化铝产生了一种可能是磷酸钙的晶体。
In this work, a bioactive glass was deposited on the alumina disk specimens by radio-frequency magnetron sputtering to study crystal formation ability in artificial saliva. Bioactive glass-coated specimens were immersed in artificial saliva for 1 week and 6 months. The specimens were observed with a scanning electron microscope (SEM) and the composition was determined by energy dispersive spectroscopy (EDS). The crystals that formed on the specimens were analyzed by Raman spectroscopic analysis and Micro-X-ray diffraction. SEM photomicrographs showed the formation of needle-like structures after immersion for 1 week, and tabular structures formed on the surface of the specimen for 6 months. EDS showed that both the needle-like and tabular structures were enriched with Ca and P. Raman and Micro-XRD spectra for the tabular structure showed peaks that may correspond to calcium phosphate. Thus, when immersed in artificial saliva, bioactive glass-coated alumina produced a crystal which might be calcium phosphate.