Porous SiC-Preforms by Intergranular Binding with Preceramic Polymers

2004 ◽  
Vol 6 (3) ◽  
pp. 167-172 ◽  
Author(s):  
M. Thünemann ◽  
A. Herzog ◽  
U. Vogt ◽  
O. Beffort
Keyword(s):  
Preceramic Polymers ◽  
Porous Sic

Fabrication of porous SiC-based ceramic microchannels via pyrolysis of templated preceramic polymers

2006 ◽  
Vol 21 (6) ◽  
pp. 1543-1549 ◽  
Author(s):  
Quoc Dat Nghiem ◽  
Amit Asthana ◽  
In-Kyung Sung ◽  
Dong-Pyo. Kim
Keyword(s):  
Early Stage ◽  
Inert Atmosphere ◽  
Silicon Carbonitride ◽  
Silica Spheres ◽  
Void Space ◽  
Polystyrene Spheres ◽  
Ceramic Phase ◽  
Preceramic Polymers ◽  
Polymer Sphere ◽  
Porous Sic

This article reports conversion chemistry of preceramic polymer to ceramic phase during the fabrication of high-temperature stable silicon carbide and silicon carbonitride monolithic porous microchannels. The micromolding in capillariesmethod is used to fabricate porous channels by the initial infiltration of a solution of 1.5-μm diameter silica spheres or 1-μm diameter polystyrene spheres into polydimethylsiloxane channels followed by filling the void space among the spheres by using viscous commercial polymeric precursors. Subsequently, the polymer-sphere composite channel was cured and pyrolysed at 1200 °C under inert atmosphere, and final wet etching step of silica spheres with 10% hydrofluoric acid solution developed the pore structures by removing the silica spheres, whereas polystyrene sphere decomposes at the early stage of pyrolysis.

Determination of creep mechanisms in various silicon carbides via TEM

1986 ◽  
Vol 44 ◽  
pp. 484-487
Author(s):  
C. H. Carter ◽  
J. E. Lane ◽  
J. Bentley ◽  
R. F. Davis
Keyword(s):  
Heat Exchangers ◽  
Sintered Material ◽  
Polycrystalline Material ◽  
Chemical Vapor ◽  
Graphite Substrate ◽  
Second Phase ◽  
Reaction Bonding ◽  
Creep Mechanisms ◽  
Porous Sic

Silicon carbide (SiC) is the generic name for a material which is produced and fabricated by a number of processing routes. One of the three SiC materials investigated at NCSU is Norton Company's NC-430, which is produced by reaction-bonding of Si vapor with a porous SiC host which also contains free C. The Si combines with the free C to form additional SiC and a second phase of free Si. Chemical vapor deposition (CVD) of CH3SiCI3 onto a graphite substrate was employed to produce the second SiC investigated. This process yielded a theoretically dense polycrystalline material with highly oriented grains. The third SiC was a pressureless sintered material (SOHIO Hexoloy) which contains B and excess C as sintering additives. These materials are candidates for applications such as components for gas turbine, adiabatic diesel and sterling engines, recouperators and heat exchangers.

ANALYSIS OF GAS PERMEABILITY FOR LIQUID PHASE-SINTERED POROUS SiC COMPACT

2014 ◽  
Vol 17 (8) ◽  
pp. 705-713 ◽  
Author(s):  
Hikaru Maeda ◽  
Yoshihiro Hirata ◽  
Soichiro Sameshima ◽  
Taro Shimonosono
Keyword(s):  
Liquid Phase ◽  
Gas Permeability ◽  
Porous Sic

Effect of Si Addition on Resistivity of Porous SiC-Si Composite for Heating Element Application

2015 ◽  
Vol 25 (5) ◽  
pp. 258-263
Author(s):  
Shinhee Jun ◽  
◽  
Wonjoo Lee ◽  
Young-Min Kong
Keyword(s):  
Heating Element ◽  
Porous Sic ◽  
Si Addition

scholarly journals Multifunctional porous SiC nanowire scaffolds

2021 ◽  
Author(s):  
Yu Chen ◽  
Oluwafunmilola Ola ◽  
Guangsheng Liu ◽  
Lei Han ◽  
Mian Zahid Hussain ◽  
...  
Keyword(s):  
Porous Sic

Processing and Elastic Property Characterization of Porous SiC Preform for Interpenetrating Metal/Ceramic Composites

2012 ◽  
Vol 95 (10) ◽  
pp. 3078-3083 ◽  
Author(s):  
Siddhartha Roy ◽  
Karl Günter Schell ◽  
Ethel Claudia Bucharsky ◽  
Pascal Hettich ◽  
Stefan Dietrich ◽  
...  
Keyword(s):  
Elastic Property ◽  
Ceramic Composites ◽  
Metal Ceramic ◽  
Porous Sic ◽  
Property Characterization

Emission related to exciton-polariton coupling in porous SiC

2011 ◽  
Vol 8 (6) ◽  
pp. 1974-1977 ◽  
Author(s):  
T. V. Torchynska ◽  
A. Diaz Cano ◽  
J. A. Yescas Hernandez ◽  
Yu. V. Vorobiev ◽  
L. V. Shcherbyna
Keyword(s):  
Porous Sic

Facile one-pot formation of ceramic fibres from preceramic polymers by pressurised gyration

2015 ◽  
Vol 41 (4) ◽  
pp. 6067-6073 ◽  
Author(s):  
Suntharavathanan Mahalingam ◽  
Giovanni Pierin ◽  
Paolo Colombo ◽  
Mohan Edirisinghe
Keyword(s):  
One Pot ◽  
Preceramic Polymers
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