Raising pyrolysis yield of preceramic polymers of silicon carbonitride

1995 ◽  
Vol 30 (17) ◽  
pp. 4463-4468 ◽  
Author(s):  
Der-Lern Yang ◽  
Dah-Shyang Tsai ◽  
Hui-Chi Liu
Keyword(s):  
Silicon Carbonitride ◽  
Preceramic Polymers

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.

Blue-violet emission of silicon carbonitride thin films prepared by sputtering and annealing treatment

2021 ◽  
Vol 546 ◽  
pp. 149121
Author(s):  
Qiang Li ◽  
Cheng Chen ◽  
Manzhang Xu ◽  
Yingnan Wang ◽  
Xuewen Wang ◽  
...  
Keyword(s):  
Thin Films ◽  
Annealing Treatment ◽  
Silicon Carbonitride ◽  
Violet Emission

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

Friction and Wear Behavior of Silicon Carbonitride Processed From the Polymer-Derived Ceramic Route

2005 ◽  
Author(s):  
Tsali Cross ◽  
Somuri Prasad ◽  
Rishi Raj
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Friction And Wear ◽  
Wear Behavior ◽  
Silicon Carbonitride ◽  
Linear Wear ◽  
Polymer Derived Ceramic ◽  
Organometallic Precursors ◽  
Future Work ◽  
Contact Pressures

Polymer derived ceramics (PDC’s) are processed from liquid organometallic precursors by cross-linking the polymers into infusible solids, followed by controlled pyrolysis. No previous work regarding their tribology has been reported. Further, the synthesis of PDC’s as thin films, and the role that the nanostructure plays on the mechanical properties has not been reported. The objective of this research was to evaluate the fundamental tribological behavior of polymer derived SiCN in both bulk and thin film form. Friction and wear evaluations were made on bulk materials and thin films using a Si3N4 ballon-disk linear wear tester at various contact pressures and in different environments that contained various amounts of humidity. The micro/nanostructure was characterized by FTIR, microRaman, and scanning electron microscopy. Bulk SiCN gave a low friction coefficient and good wear resistance in humid environments but showed significant fracture and gouging in dry environments at higher contact pressures. Although there is ambiguity regarding the tribology of the thin films there seems to be a dependence upon the nitrogen content within the materials derived from the polymeric stage. The future work will focus on optimizing processing conditions of thin films and investigating the role that nitrogen plays in both bulk and thin film SiCN materials.

scholarly journals Effect of argon ion bombardment on amorphous silicon carbonitride films

2014 ◽  
Vol 480 ◽  
pp. 012021
Author(s):  
R G S Batocki ◽  
R P Mota ◽  
R Y Honda ◽  
D C R Santos
Keyword(s):  
Amorphous Silicon ◽  
Ion Bombardment ◽  
Silicon Carbonitride ◽  
Argon Ion Bombardment ◽  
Argon Ion

RPECVD thin silicon carbonitride films using hexamethyldisilazane

1999 ◽  
Vol 09 (PR8) ◽  
pp. Pr8-769-Pr8-775 ◽  
Author(s):  
N. I. Fainer ◽  
M. L. Kosinova ◽  
Yu. M. Rumyantsev ◽  
F. A. Kuznetsov
Keyword(s):  
Silicon Carbonitride ◽  
Thin Silicon

Preparation of preceramic polymers via the metalation of poly(dimethylsilene)

1991 ◽  
Vol 10 (3) ◽  
pp. 551-558 ◽  
Author(s):  
Dietmar. Seyferth ◽  
Heinrich. Lang
Keyword(s):  
Preceramic Polymers
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