کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9697393 1460824 2005 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study on diamond films with ultra high nucleation density deposited onto alumina, sapphire and quartz
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
Study on diamond films with ultra high nucleation density deposited onto alumina, sapphire and quartz
چکیده انگلیسی
The poor adhesion between the diamond and sapphire is attributed to the weak interface interaction between the film and the substrate and to the difference in the coefficient of thermal expansion. On the other hand, it is suggested that the reason for good adhesion between diamond film and alumina substrate is that high carbon diffusivity onto alumina grain boundaries allows strong touch-points at the grooves of alumina grains, and this prevents the delamination of the diamond film. This adhesion mechanism, promoted by submicron diamond grain-size, is allowed due to initial high nucleation density. The Raman spectroscopy analysis shows a similar evolution tendency of diamond Raman peak frequency in the diamond films on alumina and quartz: intrinsic stress decreases as deposition time increases.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Diamond and Related Materials - Volume 14, Issues 3–7, March–July 2005, Pages 323-327
نویسندگان
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