کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8027370 1517620 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Titanium dioxide nanotubes/calcium silicate composite coatings prepared by alternative loop immersion method
ترجمه فارسی عنوان
نانولوله های دی اکسید تیتانیوم / پوشش های کامپوزیت سیلیکات کلسیم تهیه شده با استفاده از روش غوطه وری حلقه جایگزین
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
چکیده انگلیسی
Titania nanotube arrays (TNTs) using self-ordering electrochemical anodization have attracted considerable attention for the development of advanced implants in bone therapies. In this study, titania nanotubes/calcium silicate coating on titanium (Ti) was prepared by a two-step procedure involving the fabrication of TNTs arrays by electrochemical anodization of Ti followed by the formation of CaSiO3 coating over the TNTs by a simple process called “alternative loop immersion method (ALIM)”. To study the effect of ALIM, TNT arrays with different crystal structures were produced by repeated cycles of soaking and zinc (Zn) doping. The results showed that the amount of CaSiO3 deposited increased with the number of immersion treatments. The ability of CaSiO3 to induce the formation of apatite layer was excellent and more significant in the case of ALIM treated amorphous TNTs compared to that of anatase TNTs. Moreover, Zn doped CaSiO3 prepared by adding a certain concentration of zinc nitrate into the soaking system exhibited higher chemical stability and enhanced antibacterial activity. In consideration of the potential clinical applications, in vitro bioactivity was confirmed for the TNTs/CaSiO3 composite by simulated body fluid test, and the result showed that CaSiO3 coating significantly enhanced the apatite-forming ability of TNT arrays.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 258, 15 November 2014, Pages 624-630
نویسندگان
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