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Enhancement of The Bioactivity of Tantalum by Pre-Calcification
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State Key Laboratory of Material Processing and Die and Mould Technology,Huazhong University of Science and Technology

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    Abstract:

    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.

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[Wang Wenkai, Hu Shubing. Enhancement of The Bioactivity of Tantalum by Pre-Calcification[J]. Rare Metal Materials and Engineering,2019,48(7):2352~2357.]
DOI:10.12442/j. issn.1002-185X.20180100

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History
  • Received:January 26,2018
  • Revised:February 13,2018
  • Adopted:March 12,2018
  • Online: August 01,2019
  • Published: