Preparation of porous Si3N4 ceramics via tailoring solid loading of Si3N4 slurry and Si3N4 poly-hollow microsphere content
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چکیده
منابع مشابه
Preparation and properties of clean Si3N4 surfaces
In situ chemical methods for preparing atomically-clean surfaces of Si3N4 thin films in ultra-high vacuum (UHV) have been studied using X-ray and ultraviolet photoemission, electron energy loss and Auger electron spectroscopies. Prior to the UHV studies, the films (grown ex situ on Si(1 0 0) wafers by low-pressure chemical vapor deposition) were characterized using primarily infrared reflection...
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In this research, the rheological behavior and stability of suspensions containing Si3N4, Al2O3, Y2O3 and starch were investigated in order to use them in the starch consolidation casting of porous silicon nitride. Dolapix CE64 was used as the dispersant. Then, the effect of some parameters such as Si3N4 surface oxidation, dispersant content, solid loading and starch content on the viscosity an...
متن کاملHIGH TEMPERATURE ELASTIC STRAIN EVOLUTION IN Si3N4-BASED CERAMICS
Tension experiments in vacuum were performed on a monolithic Si3N4 sample at 1375°C and a 20Vol% SiCp-Si3N4 composite sample at 1400°C using the new SMARTS diffractometer at the Los Alamos Neutron Science Center. The deep penetration of neutrons facilitated these in-situ studies. In particular, the hkl-dependent strains were measured and the results interpreted by Eshelby-based modeling for the...
متن کاملComparative Study of Si3N4 and HfO2/Si3N4 Stacked Trapping Layer on Junctionless Poly-Si Flash Memory Device
Effects of Si3N4 trapping layer (NTL) and HfO2/Si3N4 bandgap-engineered trapping layer (BETL) on junctionless (JL) polycrystalline-based flash memory devices are investigated in this work. The programming speed is clearly improved by BETL but the erasing speed is only slightly improved. JL device with BETL performs better retention characteristics since the conduction band offset between Si3N4 ...
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c © 2008 by John von Neumann Institute for Computing Permission to make digital or hard copies of portions of this work for personal or classroom use is granted provided that the copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. To copy otherwise requires prior specific permission by the publisher ment...
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ژورنال
عنوان ژورنال: Journal of Advanced Ceramics
سال: 2015
ISSN: 2226-4108,2227-8508
DOI: 10.1007/s40145-015-0158-9