کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1428764 1509182 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electrophoretic deposition of zinc-substituted hydroxyapatite coatings
ترجمه فارسی عنوان
رسوب الکتروفورز پوشش های هیدروکسی آپاتیت روی جایگزین
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد بیومتریال
چکیده انگلیسی


• We investigate the Zn/Ca ratios for the synthesis of zinc-substituted HA.
• Zinc-substituted HA nanoparticles are used for electrophoretic deposition.
• Adding triethanolamine and HCl may aid electrophoretic deposition.
• Uniform dense coatings of zinc-substituted HA are obtained when Zn/Ca = 5%.

Zinc-substituted hydroxyapatite nanoparticles synthesized by the co-precipitation method were used to coat stainless steel plates by electrophoretic deposition in n-butanol with triethanolamine as a dispersant. The effect of zinc concentration in the synthesis on the morphology and microstructure of coatings was investigated. It is found that the deposition current densities significantly increase with the increasing zinc concentration. The zinc-substituted hydroxyapatite coatings were analyzed by X-ray diffraction, scanning electron microscopy and Fourier transform infrared spectroscopy. It is inferred that hydroxyapatite and triethanolamine predominate in the chemical composition of coatings. With the increasing Zn/Ca ratios, the contents of triethanolamine decrease in the final products. The triethanolamine can be burnt out by heat treatment. The tests of adhesive strength have confirmed good adhesion between the coatings and substrates. The formation of new apatite layer on the coatings has been observed after 7 days of immersion in a simulated body fluid. In summary, the results show that dense, uniform zinc-substituted hydroxyapatite coatings are obtained by electrophoretic deposition when the Zn/Ca ratio reaches 5%.

Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: C - Volume 39, 1 June 2014, Pages 67–72
نویسندگان
, , ,