摘要
通过增加模拟体液中钙盐和磷盐的浓度,在模拟体液中合成了晶须状类骨纳米羟基磷灰石(HAp)粉体。利用X射线衍射(XRD)和红外吸收光谱(FTIR)分析粉体的物相组成和基本特征,利用透射电子显微镜(TEM)和高分辨透射电子显微镜(HRTEM)观察晶须的形貌、尺寸与生长方向,将粉体在500～900℃不同温度下热处理,研究其热稳定性。结果表明,晶须状羟基磷灰石的平均长径比为25∶1(长100nm,直径4nm),晶须沿c轴方向生长;热处理温度超过700℃,羟基磷灰石易发生分解。
Bone-like HAp whiskers was prepared by simulated body fluid (SBF) method using CaCl2 and K2HPO4 · 3H2O as precursors. Characterization of the HAp was evaluated by using X-ray diffraction (XRD) and Fourier transform infra-red spectroscopy (FTIR). The morphology, size and growing direction of the HAp whisker were observed by Transmission Electron Microscopy (TEM) and High-resolution Transmission Electron Microscopy (HRTEM). Thermal stability of the HAp was investigated at different sintering temperatures. It is found that the ratio of length to diameter of the HAp whisker is 25:1 (length 100 nm, diameter 4 nm) and its growing direction is along c axis. The HAp could be decomposed when the sintering temperature is above 700°C.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2005年第4期8-11,共4页
Transactions of Materials and Heat Treatment
基金
国家自然科学基金资助项目(50372035)
山东省科学技术发展计划资助项目(011120106)
关键词
模拟体液
纳米羟基磷灰石
晶须
生长方向
热稳定性
Biomaterials
Body fluids
Crystal whiskers
Fourier transform infrared spectroscopy
Nanostructured materials
Sintering
Synthesis (chemical)
Thermodynamic stability
Transmission electron microscopy
X ray diffraction analysis
