(山東理工大學(xué) 材料科學(xué)與工程學(xué)院，淄博 255091)
摘 要: 以生物碳酸鈣作為鈣源，采用均勻沉淀法，制備多孔羥基磷灰石(HA)球晶。利用SEM、XRD、FT-IR和光學(xué)顯微鏡研究球晶的形貌、尺寸、成分和相組成。結(jié)果表明，球晶由片狀含碳酸HA納米晶體組成，平均直徑為5~15 μm，大小均勻、分散性好、結(jié)構(gòu)精致、對(duì)稱性好。在正交偏光鏡間球晶呈現(xiàn)黑十字消光，用補(bǔ)色法則測得為正光性球晶。
關(guān)鍵字: 生物碳酸鈣；羥基磷灰石球晶；均勻沉淀法；十字消光
（School of Materials Science and Engineering, Shandong University of Technology, Zibo 255091, China）
Abstract:Hydroxyapatite (HA) spherulites were prepared by homogeneous precipitation method using biological calcium carbonate as a raw material. The morphology, size, structure and phase of the HA spherulites were characterized by SEM, XRD, FT-IR and polarized light microscopy. The result show that the HA spherulites with delicate structure and supreme symmetry are formed by self-assembly of plate-shaped HA nanocrystals. The average diameter of HA spherulites with even sizes and better dispersibility is 5-15 μm. The HA spherulites present a black cross extinction between the crossed polarizers microscopes, and they are optically positive spherulites by compensation principle.
Key words: biological calcium carbonate; hydroxyapatite spherulites; homogeneous precipitation method; cross extinction
