کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5441090 1510376 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Densification of amorphous boron under pressure
ترجمه فارسی عنوان
تنش بورون آمورف تحت فشار
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی
The densification mechanism of amorphous boron under pressure is investigated using a constant pressure ab initio technique and found to be associated with two consecutive amorphous-to-amorphous phase transformations. Amorphous boron gradually transforms into a high density amorphous phase, followed by a first order phase transformation into another high density amorphous state. The high density amorphous phases of boron are not quenchable to ambient pressure. Most quasimolecular B12 icosahedra in the model are found to be stable at the highest the theoretical pressure of 280 GPa reached in the present work and thus the phase transformations are principally due to the re-structural arrangements in the parts of the model connecting B12 icosahedra.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 471, 1 September 2017, Pages 274-279
نویسندگان
,