کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10629305 991051 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Grain size dependence of hardness and fracture toughness in pure near fully-dense boron carbide ceramics
ترجمه فارسی عنوان
وابستگی دانه به سختی و چقرمگی شکست در سرامیک کاربید بور کاملا جامد است
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی
Room temperature fracture toughness and hardness of spark plasma sintered pure B4C ceramics with grain sizes ranging from 120 nm to 17 μm have been studied. Vickers indentation and single edge V-notched beam (SEVNB) techniques have been used to measure hardness and fracture toughness, respectively. A critical analysis of the results derived from these two techniques has been carried out and the conditions for proper comparison of the derived results are discussed. The results have shown that hardness follows the Hall-Petch dependence with either grain size or twin spacing when the effect of porosity is corrected for. On the contrary, fracture toughness is found to be essentially grain size independent. The value of this quantity is ∼2 MPa m1/2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 36, Issue 7, June 2016, Pages 1829-1834
نویسندگان
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