TEM characterization of hot-pressed ZrB2-SiC-AlN composites
نویسندگان
چکیده
منابع مشابه
Effect of Repeated Thermal Shock on Mechanical Properties of ZrB2-SiC-BN Ceramic Composites
ZrB2-20 vol.% SiC-10 vol.% h-BN (particles) ceramic composites (ZSB) were fabricated by hot pressing under inert gas protected. ZSB samples with mean size 75 × 55 × 40 mm(3) were heated using current heating method and then cooled down to low temperature by circulating water. ZSB samples repeatedly went through thermal shock with 10-50 times under various conditions, respectively. Diverse effec...
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2014 Temperature dependence of electrical conductivity has been studied for hot pressed AlN ceramic having different volume percentage of porosity (0.2 to 15 %) in the temperature range (500 K to 950 K). It has been observed that electrical conductivity decreases by two orders of magnitude as the volume percentage of porosity increases from 0.2 to 15 %. The effect of moisture on electrical cond...
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برای بهبود خواص سینتری و مکانیکی کامپوزیت های بر پایه ZrB2 به آن SiC، MoSi2 و AlN افزوده می شود. در این تحقیق فرمولاسیون پایه حاوی ZrB2 میکرونی، SiC نانومتری (20% حجمی) و کمک سینتر MoSi2(4درصد وزنی) بود که به آن مقادیر مختلف AlN ویسکری (%10-0 حجمی) افزوده شد. شکل دهی نمونه ها با پرس تک محوره و سپس پرس ایزواستایک سرد (CIP) با فشار MPa 20 انجام شد. سینتر نمونه ها در دمای C°2100 به مدت یک ساعت و ...
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ژورنال
عنوان ژورنال: Results in Physics
سال: 2020
ISSN: 2211-3797
DOI: 10.1016/j.rinp.2020.103348