کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
12353 791 2005 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Constitutive modeling of the densification and the grain growth of hydroxyapatite ceramics
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
Constitutive modeling of the densification and the grain growth of hydroxyapatite ceramics
چکیده انگلیسی

In the present work, constitutive models for densification and grain growth were employed to investigate the sintering behavior of pure hydroxyapatite ceramics. For densification study, lattice diffusion, grain-boundary diffusion, and interface reaction mechanisms, and for grain-growth study, surface diffusion mechanism, were considered respectively. Hydroxyapatite ceramics were pressurelessly sintered. The sintering results were discussed and compared with the modeling results. Based on the constitutive models employed and the experimental results obtained, grain-boundary diffusion was identified as the dominant mechanism for the densification of the investigated hydroxyapatite. The grain-growth model provided a good prediction to the grain growth of the investigated hydroxyapatite. The activation energies for densification and grain growth of hydroxyapatite ceramics were evaluated as 1150±40 and 1020±40 KJ mol−1, respectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biomaterials - Volume 26, Issue 14, May 2005, Pages 1613–1621
نویسندگان
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