王文凯,胡树兵.预钙化处理提高钽的表面生物活性[J].稀有金属材料与工程,2019,48(7):2352~2357.[Wang Wenkai,Hu Shubing.Enhancement of The Bioactivity of Tantalum by Pre-Calcification[J].Rare Metal Materials and Engineering,2019,48(7):2352~2357.]
预钙化处理提高钽的表面生物活性
投稿时间:2018-01-26  修订日期:2018-02-13
中文关键词:    碱处理  预钙化  磷灰石
基金项目:国家重点基础研究发展计划(973)No.2014CB046704 资助
中文摘要:
      为提高钽的生物活性,对钽进行了NaOH溶液碱处理,利用模拟体液(SBF)浸泡实验探索碱处理的最佳浓度。碱处理后的钽又分别在CaCl2溶液和K2HPO4溶液中进行预钙化处理。钽经过0.7mol/L的碱处理后,在SBF中浸泡2周,表面即可被羟基磷灰石覆盖。经预钙化处理后,钽在SBF中浸泡4天,表面即可覆盖一层羟基磷灰石,说明预钙化大幅提高了钽的生物活性。其机理是预钙化处理可使样品表面迅速完成钙磷化合物的形核,浸入SBF以后羟基磷灰石可以迅速长大。
Enhancement of The Bioactivity of Tantalum by Pre-Calcification
英文关键词:tantalum  alkali treatment  pre-calcification  apatite
英文摘要:
      In order to improve the bioactivity of tantalum, NaOH solution was applied to tantalum, and the optimal concentration of alkali treatment was explored by simulating somatic fluid (SBF) soaking experiment. Alkali-treated tantalum was pre-calcified in CaCl2 solution and K2HPO4 solution, respectively. Tantalum after 0.7mol/L alkali treatment, soaked in SBF for 2 weeks, the surface can be covered with hydroxyapatite. After pre-calcification, tantalum soaked in SBF for 4 days, the surface can be covered with a layer of hydroxyapatite, indicating that pre-calcification substantially increase the bioactivity of tantalum. The mechanism is pre-calcification can make the sample surface quickly complete the nucleation of calcium and phosphorus compounds, immersed in SBF hydroxyapatite can grow rapidly.
作者单位E-mail
王文凯 华中科技大学材料成形与模具技术国家重点实验室 wangwenkai1221@163.com 
胡树兵 华中科技大学材料成形与模具技术国家重点实验室 hushubing@163.com 
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