کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1475066 991108 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dehydroxylation of hydroxyapatite in dense bulk ceramics sintered by spark plasma sintering
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Dehydroxylation of hydroxyapatite in dense bulk ceramics sintered by spark plasma sintering
چکیده انگلیسی

Dense transparent hydroxyapatite (HAp) nanoceramic samples were prepared by spark plasma sintering of a commercial available granulated nanopowder. This made it possible for investigating the dehydroxylation behaviours of HAp in fully dense bulks. Post-SPS thermal annealing was performed in a temperature interval of 800 to 1100 °C in air. The phase analysis and microstructural characterization revealed that the dehydroxylation in fully dense HAp was initiated above 900 °C and its kinetics seems to be determined by the water vapour diffusion. Accordingly, a gradient structure consisting of porous interiors and a peculiar surface topography reflecting the water vapour escaping patterns were observed in samples experienced severe dehydroxylation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 32, Issue 11, August 2012, Pages 2691–2696
نویسندگان
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