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首页> 外文会议>13th International Symposium on Ceramics in Medicine and the Annual Meeting of the International Society for Ceramics in Medicine 22-26 November 2000 Bologna, Italy >Growth of Brushite Crystals in Sodium Silicate Gel and their Characterization
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Growth of Brushite Crystals in Sodium Silicate Gel and their Characterization

机译：硅酸钠凝胶中透钙磷石晶体的生长及其表征

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摘要

Brushite (CaHPO_4.2H_2O, DCPD) single crystals were grown in sodium silicate gel at room temperature. The single diffusion technique was employed in growing crystals. Suitable reactants such as ammonium di-hydrogen phosphate and calcium nitrate tetra hydrate were used as inner and outer reactants. Growth parameters, such as concentration of reactants, gel density and period of growth, were investigated. With 1M ammonium di-hydrogen phosphate and 2M calcium nitrate tetra hydrate, Brushite needles of the size up to 40mm in length were obtained in a period of 45 days. The crystals grown were confirmed to be Brushite by XRD and FTIR analyses. As determined by nano-indentation tests, these crystals had average modulus and hardness values of 22.5GPa and 1.75gPa, respectively.
机译：在室温下，在硅酸钠凝胶中生长透钙磷石（CaHPO_4.2H_2O，DCPD）单晶。单扩散技术被用于生长晶体。合适的反应物例如磷酸二氢铵和硝酸钙四水合物用作内部和外部反应物。研究了生长参数，例如反应物浓度，凝胶密度和生长时间。使用1M磷酸二氢铵和2M硝酸钙四水合物，可以在45天的时间内获得最大长度为40mm的透钙磷石针。通过XRD和FTIR分析证实生长的晶体为透钙磷石。通过纳米压痕测试确定，这些晶体的平均模量和硬度值分别为22.5GPa和1.75gPa。

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