نتایج جستجو برای: sic nanotube
تعداد نتایج: 29726 فیلتر نتایج به سال:
SiC porous granules were synthesized from activated granular charcoal and Si powder at 973K by using a Na flux. The SiC granules maintained the shape of the charcoal with a dimension of about 5mm in diameter and 7–10mm in length. X-ray diffraction showed the structure of the formed SiC to be cubic -type. Agglomerates of a few dozen nm of SiC grains and an electron diffraction ring pattern of -S...
ZnO/SiC heterojunctions show great potential for various optoelectronic applications (e.g., ultraviolet light emitting diodes, photodetectors, and solar cells). However, the lack of a detailed understanding of the ZnO/SiC interface prevents an efficient and rapid optimization of these devices. Here, intrinsic (but inherently n-type) ZnO were deposited via molecular beam epitaxy on n-type 6H-SiC...
Silicon carbide composites (SiC/SiC) are promising candidate materials for fusion reactors. For the practical application of this class of materials, a design basis for SiC/SiC composites needs to be developed because of inherent brittle-like fracture, i.e., quasi-ductility, which is totally different from ductility of metals. For this purpose, the failure behavior, i.e., matrix cracking behavi...
Silicon carbide (SiC) an industrial-scale product manufactured through the Acheson process, is largely employed in various applications. Its toxicity has been poorly investigated. Our study aims at characterizing the physico-chemical features and the in vitro impact on biological activity of five manufactured SiC powders: two coarse powders (SiC C1/C2), two fine powders (SiC F1/F2) and a powder...
electrical sensitivity of a boron nitride nanotube (bnnt) was examined toward c2h5oh molecules by using density functional theory (dft) calculations . it was founding that the adsorption energy(ead) of ethanol on the pristine nanotubes is about -51.5 kj / mol, but when the nanotube has been doped with si and al atoms , the adsorption and recovery time changed and the sensitivity of nano...
SiC single crystal is usually grown by sublimation (modified Lely method). There is a lotof remaining issues that should be solved. One is the technical problems of SiC single crystal growth process. And the other is the theoretical problem based on SiC physical properties. As the example of technical issues, in this paper, the example of design optimization for SiC sublimation growth is descri...
This paper presents a vision for the future of 3D packaging and integration of silicon carbide (SiC) power modules. Several major achievements and novel architectures in SiC modules from the past and present have been highlighted. Having considered these advancements, the major technology barriers preventing SiC power devices from performing to their fullest ability were identified. 3D wire bon...
Recently, energy saving is strongly required to prevent global warming. Electricity is the most common energy form and is necessary in our daily life and various activities, because it is comparatively easy to utilize in transmission and conversion after generation. Therefore, it is very important to reduce energy loss in electric power systems and improve their efficiency. The present power sy...
در این تحقیق نانو کامپوزیت sic- 3o2al با درصد حجمی 3%، 5%، 10% و 15% sicاز طریق مخلوط کردن میکرو پودر 3o2al و نانو پودر sic به روش زینتر بدون فشار در دمای ?c1750 ساخته شد. پودرهای آلومینا و کاربید سیلیسیم با یکدیگر بصورت سوسپانسیون آسیاب شدند. نمونه ها به روش پرس ایزو استاتیک سرد تولید شدند. نمونه ها در یک اتمسفر کنترل شده با گاز آرگون به روش زینتر بدون فشار در دمای ?c1750 زینتر شدند. خواص ریز ...
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