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硅掺杂羟基磷灰石包覆镁合金的微波制备
Microwave Preparation of Silicon-Substituted Hydroxyapatite Coated Magnesium Alloy
  
DOI:10.16253/j.cnki.37-1226/tq.2016.06.009
中文关键词:  硅掺杂羟基磷灰石  镁合金  微波  耐蚀性能  生物性能
英文关键词:Silicon-substituted hydroxyapatite coating  Magnesium alloy  Microwave preparation  Corrosion resistance  Biological performance
基金项目:国家自然科学基金 (51372166和81271954)。
作者单位
申偲伯 天津大学 先进陶瓷与加工技术教育部重点实验室天津300072 
蔡 舒 天津大学 先进陶瓷与加工技术教育部重点实验室天津300072 
许国华 上海长征医院上海200003 
凌 瑞 天津大学 先进陶瓷与加工技术教育部重点实验室天津300072 
叶炜琪 天津大学 先进陶瓷与加工技术教育部重点实验室天津300072 
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中文摘要:
      以Ca(NO3)2×4H2O为钙源、Na2HPO4×12H2O为磷源、Na2SiO3为硅源,采用微波液相化学法在镁合金表面制备了硅掺杂羟基磷灰石双层涂层。涂层表层为絮状晶体,底层为长片状晶体,涂层的厚度约为9.9 μm。研究了微波溶液中Na2SiO3添加量和微波溶液的pH值对硅掺杂羟基磷灰石涂层的结构和性能的影响。结果表明,与羟基磷灰石相比,硅掺杂羟基磷灰石涂层提高了对镁合金的保护作用,促进了成骨细胞的增殖和分化。
英文摘要:
      In order to improve the corrosion resistance and biological performance of degradable magnesium alloy, in this work, silicon-substituted hydroxyapatite bilayer coatings were prepared on magnesium alloy via microwave aqueous chemical route for only 10 min with Ca(NO3)2×4H2O, Na2HPO4×12H2O and Na2SiO3 as the raw materials. The coating consists of cotton-like crystals as the surface layer and strip-like crystals as the bottom layer, and the coating thickness is about 9.9μm. The influence of Na2SiO3 addition and pH value of the microwave solution on the structure and performance of the coated magnesium alloy were investigated. The results indicated that, compared with hydroxyapatite coating, silicon-substituted hydroxyapatite coating improved the protective effect to magnesium alloy as well as enhanced the osteoblast proliferation and differentiation.
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