کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7869815 | 1509175 | 2015 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Low elastic modulus Ti-Ta alloys for load-bearing permanent implants: Enhancing the biodegradation resistance by electrochemical surface engineering
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
بیومتریال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Low elastic modulus Ti-Ta alloys for load-bearing permanent implants: Enhancing the biodegradation resistance by electrochemical surface engineering Low elastic modulus Ti-Ta alloys for load-bearing permanent implants: Enhancing the biodegradation resistance by electrochemical surface engineering](/preview/png/7869815.png)
چکیده انگلیسی
In this study, the in vitro degradation behaviour of titanium-tantalum (Ti-Ta) alloys (10-30 wt.% Ta) was investigated and compared with conventional implant materials, i.e., commercially pure titanium (Cp-Ti) and titanium-aluminium-vanadium (Ti6Al4V) alloy. Among the three Ti-Ta alloys studied, the Ti20Ta (6.3 Ã 10â 4 mm/y) exhibited the lowest degradation rate, followed by Ti30Ta (1.2 Ã 10â 3 mm/y) and Ti10Ta (1.4 Ã 10â 3 mm/y). All the Ti-Ta alloys exhibited lower degradation rate than that of Cp-Ti (1.8 Ã 10â 3 mm/y), which suggests that Ta addition to Ti is beneficial. As compared to Ti6Al4V alloy (8.1 Ã 10â 4 mm/y), the degradation rate of Ti20Ta alloy was lower by ~ 22%. However, the Ti30Ta alloy, which has closer elastic modulus to that of natural bone, showed ~ 48% higher degradation rate than that of Ti6Al4V alloy. Hence, to improve the degradation performance of Ti30Ta alloy, an intermediate thin porous layer was formed electrochemically on the alloy followed by calcium phosphate (CaP) electrodeposition. The coated Ti30Ta alloy (3.8 Ã 10â 3 mm/y) showed ~ 53% lower degradation rate than that of Ti6Al4V alloy. Thus, the study suggests that CaP coated Ti30Ta alloy can be a viable material for load-bearing permanent implants.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: C - Volume 46, 1 January 2015, Pages 226-231
Journal: Materials Science and Engineering: C - Volume 46, 1 January 2015, Pages 226-231
نویسندگان
Jazmin Kesteven, M. Bobby Kannan, Rhys Walter, Hadis Khakbaz, Han-Choel Choe,