Formation of Hydroxyapatite Whiskers by Hydrothermal Homogeneous Precipitation Using Acetamide
作者： Hongquan Zhang , Brian W. Darvell
DOI: 10.1111/J.1551-2916.2010.04338.X
关键词: Materials science 、 Mineralogy 、 Crystal growth 、 Whiskers 、 Nucleation 、 Chemical engineering 、 Supersaturation 、 Hydrothermal circulation 、 Aqueous solution 、 Acetamide 、 Precipitation (chemistry)
摘要: Well-crystallized, compositionally homogeneous HA whiskers with uniform morphology and high aspect ratio were successfully prepared by hydrothermal precipitation from aqueous solution using acetamide (AA). The product had a mean length of 116 μm an 102. nucleation crystal growth such studied quenching the various temperatures. It was found that nuclei could be formed at about 120°C, while stable well-grown whisker-like only occurred above 140°C. same crystallographic characteristics as normal crystals. No other phase than detected. Compared widely used wet chemical routes, slow hydrolysis AA provided continuous environment low degree supersaturation, facilitating rapid long directly solution, free any interference phases. showed spiral growth, preferential c-axis orientation.
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