کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1577478 1514800 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of sintering temperature on microstructure and properties of SiO2 ceramic incorporated with boron nitride nanotubes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Influence of sintering temperature on microstructure and properties of SiO2 ceramic incorporated with boron nitride nanotubes
چکیده انگلیسی

Silica (SiO2) ceramic containing 5 wt% boron nitride nanotubes (BNNTs) was fabricated by hot pressing at 1200–1450 °C. The influences of the sintering temperature on phase composition, relative density, microstructure and mechanical and dielectric properties were investigated, respectively. As the increase of sintering temperature, mechanical properties varied dramatically, while the relative density and dielectric constant increased during the range of sintering temperature. The composite sintered at 1400 °C exhibited superior properties, attaining flexure strength of 120.5 MPa, fracture toughness of 1.21 MPa m1/2, dielectric constant of 4 and relative density of 92%. Particularly, flexure strength and fracture toughness were about 230.8% and 208.6% higher than those of monolithic SiO2, respectively.


► SiO2 matrix containing 5 wt% BNNTs was fabricated at 1300–1450 °C.
► Microstructure and properties (mechanical and dielectric) were investigated.
► The most superior mechanical and dielectric properties were attained at 1400 °C.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 543, 1 May 2012, Pages 271–276
نویسندگان
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