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首页> 外文期刊>Applied Surface Science >A study of calcium carbonate/multiwalled-carbon nanotubes/chitosan composite coatings on Ti-6Al-4V alloy for orthopedic implants
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A study of calcium carbonate/multiwalled-carbon nanotubes/chitosan composite coatings on Ti-6Al-4V alloy for orthopedic implants

机译：用于骨科植入物的Ti-6Al-4V合金上的碳酸钙/多壁碳纳米管/壳聚糖复合涂层的研究

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摘要

In an attempt to increase the stability, bioactivity and corrosion resistance of Ti-6Al-4V alloy, chi-tosan (CS) biocomposite coatings reinforced with multiwalled-carbon nanotubes (MWCNTs), and calcium carbonate (CaCO_3) for surface modification were utilized by electroless deposition. Scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR) reveals the formation of a compact and highly crosslinked coatings. Electrochemical techniques were used to investigate the coats stability and resistivity for orthopedic implants in simulated body fluid (SBF). The results show that E_(st) value is more positive in the following order: CaCO_3/MWCNHs/CS>CS/MWCNTs>CS> MWCNTs. The calculated i_(corr) was 0.02 nAcm~(-2) for CaCO_3/MWCNTs/CS which suggested a high corrosion resistance.
机译：为了提高Ti-6Al-4V合金的稳定性，生物活性和耐蚀性，通过多壁碳纳米管（MWCNT）增强的壳聚糖（CS）生物复合涂层和用于表面改性的碳酸钙（CaCO_3）被采用化学沉积。扫描电子显微镜（SEM），傅立叶变换红外光谱（FTIR）揭示了致密且高度交联的涂层的形成。电化学技术用于研究模拟体液（SBF）中整形外科植入物的涂层稳定性和电阻率。结果表明，E_（st）值按以下顺序更正：CaCO_3 / MWCNHs / CS> CS / MWCNT> CS> MWCNT。 CaCO_3 / MWCNTs / CS的i_（corr）为0.02 nAcm〜（-2），具有较高的耐蚀性。

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  • 来源
    《Applied Surface Science》 |2013年第ptab期|309-316|共8页
  • 作者

    Rasha A. Ahmed; Amany M. Fekry; R.A. Farghali;

  • 作者单位

    Chemistry Department, Faculty of Science, Taif University, Saudi Arabia,Forensic Chemistry Laboratories, Medico Legal Department, Ministry of Justice, Cairo, Egypt;

    Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt;

    Chemistry Department, Faculty of Science, Taif University, Saudi Arabia,Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Carbon nanotube; Chitosan; Calcium carbonate; Electrochemical impedance;

    机译：碳纳米管;壳聚糖碳酸钙;电化学阻抗;

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