کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5465691 | 1398881 | 2016 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
In vitro corrosion performance of PEO coated Ti and Ti6Al4V used for dental and orthopaedic implants
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: In vitro corrosion performance of PEO coated Ti and Ti6Al4V used for dental and orthopaedic implants In vitro corrosion performance of PEO coated Ti and Ti6Al4V used for dental and orthopaedic implants](/preview/png/5465691.png)
چکیده انگلیسی
The present work describes the characteristics of 5-10 μm-thick plasma electrolytic oxidation (PEO) coatings with graded Ca/P ratio generated on titanium of commercial grades I (c.p. Ti) and V (Ti6Al4V) and some of the aspects of their bioactivity and corrosion resistance in vitro in long-term (up to 8 weeks) normal and short-term (1 week) inflammatory conditions. Simulated body fluid (SBF) and artificial saliva at 37 °C were used as corrosive media; inflammatory conditions were simulated by controlling the pH and introducing hydrogen peroxide (usual metabolism product of inflammation-inducing bacteria). Additionally, the saliva was modified with fluoride ions. DC and AC electrochemical tests were used to characterize the corrosion protection mechanism of the coatings. Metal ion release (Ti4 +, Al3 + and V5 +) from PEO coated materials during their in vitro immersion in normal and inflammatory SBF was evaluated by ICP-MS. PEO coatings on Ti6Al4V alloy inhibited the liberation of titanium compared with non-coated alloy both at short-term inflammatory and long-term normal immersion conditions; but the liberation of aluminium and vanadium was greater from the coated than non-coated alloy at both conditions, due to the presence of these ions in the coatings. The PEO-coated c.p. Ti exhibited considerably higher stability with respect to Ti4 + ion release in SBF at all conditions compared with the PEO-coated Ti6Al4V.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 307, Part C, 15 December 2016, Pages 1255-1264
Journal: Surface and Coatings Technology - Volume 307, Part C, 15 December 2016, Pages 1255-1264
نویسندگان
E. Matykina, R. Arrabal, B. Mingo, M. Mohedano, A. Pardo, M.C. Merino,