• 主题
高级搜索  >
历史搜索 清空历史
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 >Bioactivity Assessment of Hydroxyapatite Coatings Produced by Alkali Conversion of Monetite
【24h】

Bioactivity Assessment of Hydroxyapatite Coatings Produced by Alkali Conversion of Monetite

机译：莫纳石碱转化产生羟基磷灰石涂层的生物活性评估

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Commercially pure titanium sheets were coated with hydroxyapatite using three different routes: alkali conversion of monetite to hydroxyapatite utilising NH_4OH, KOH and NaOH solutions with pH=12.5. The hydroxyapatite coatings produced by each of the three different routes all exhibited similar morphologies and crystallinities, and hydroxyapatite was the only crystalline phase observed in all the coatings. The crystallinity and identification of the phases present were obtained by X-ray diffraction (XRD) analysis and the bioactivity was assessed according to the method developed by KOKUBO and co-workers. SEM analysis showed that all specimens exhibited areas with apatite precipitation from the SBF solution after 3 days immersion in SBF solution, irrespective of the alkaline solution used for the conversion process. This finding was confirmed by XRD analysis, which revealed a pattern corresponding to poorly-crystallinity hydroxyapatite. There appeared to be no effect of the ammonium, sodium or potassium ions from the different alkaline solutions used on the chemical conversion of monetite to hydroxyapatite on the properties of the resulting coating.
机译：使用三种不同的途径，用羟基磷灰石涂覆商业纯钛片材：利用pH = 12.5的NH_4OH，KOH和NaOH溶液将褐铁矿碱转化为羟基磷灰石。通过三种不同途径中的每一种生产的羟基磷灰石涂层都表现出相似的形态和结晶度，并且羟基磷灰石是在所有涂层中观察到的唯一结晶相。通过X射线衍射（XRD）分析获得存在的结晶度和鉴定相，并根据KOKUBO及其同事开发的方法评估生物活性。 SEM分析表明，所有样品在SBF溶液中浸泡3天后，均会从SBF溶液中沉淀出磷灰石，而与转化过程所用的碱性溶液无关。 XRD分析证实了这一发现，该分析揭示了对应于结晶度较差的羟基磷灰石的图案。似乎不同的碱性溶液中的铵离子，钠离子或钾离子对绿沸石到羟基磷灰石的化学转化对所得涂层的性能没有影响。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号