کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7887064 1509787 2018 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structural transformations of boron trioxide under high pressure and high temperature
ترجمه فارسی عنوان
تغییرات ساختاری تری اکسید بور با فشار بالا و دمای بالا
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی
A systematic study of boron trioxide under high pressure and high temperature (HPHT) was conducted using a Chinese multi-anvil high-pressure apparatus (CHPA). The HPHT phase diagram was determined using X-ray diffraction measurements. Under high pressure (3.6-5.5 GPa) and low temperature (below 450 °C), the boron trioxide grains were reduced to the nanometer size and the hardness reaches to 13.9 GPa (5.5 GPa and 450 °C). The boroxol rings were produced only in the glass phase that was transformed from the α-B2O3 phase under HPHT. And the formation mechanism of boroxol rings was discussed according to Raman spectrum and crystal structure of α-B2O3 and β-B2O3.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 11, 1 August 2018, Pages 12491-12495
نویسندگان
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