کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5365139 1388325 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dissolution of synthetic and bovine bone-derived hydroxyapatites fabricated by hot-pressing
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Dissolution of synthetic and bovine bone-derived hydroxyapatites fabricated by hot-pressing
چکیده انگلیسی

Dissolving behavior of hydroxyapatite (HA) ceramics prepared from bovine bone (BHA) was investigated and compared with synthetic HA. BHA power was obtained by calcining at 800 °C for 1 h to remove organics and then attritor-milling for 24 h. Synthetic HA and BHA powders were prepared by hot-pressing at 1000 °C for 0.5 h under the pressure of 30 MPa in Ar atmosphere. Sintered densities of the synthetic HA and the BHA were about 96% and 95%, respectively. The BHA consisted of mainly HA and small amount of magnesium oxide. Immersion test revealed that there was no clear evidence of dissolution for the BHA, whereas extensive dissolution on the surface of the synthetic HA occurred in buffered water. Accordingly, dense hydroxyapatite from bovine bone was more stable than synthetic HA in liquid environment.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 255, Issue 2, 15 November 2008, Pages 589-592
نویسندگان
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