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Hydridosiloxanes as precursors to ceramic products

Patent ·
OSTI ID:870979
 [1];  [2];  [3]
  1. San Jose, CA
  2. Piedmont, CA
  3. Palo Alto, CA
+ Show Author Affiliations

A method is provided for preparing ceramic precursors from hydridosiloxane starting materials and then pyrolyzing these precursors to give rise to silicious ceramic materials. Si--H bonds present in the hydridosiloxane starting materials are catalytically activated, and the activated hydrogen atoms may then be replaced with nonhydrogen substituents. These preceramic materials are pyrolyzed in a selected atmosphere to give the desired ceramic product. Ceramic products which may be prepared by this technique include silica, silicon oxynitride, silicon carbide, metal silicates, and mullite.

Assignee:
SRI International (Menlo Park, CA)
Patent Number(s):
US 5635250
OSTI ID:
870979
Country of Publication:
United States
Language:
English

References (8)

Microcrystalline Ceramic Composites by Active Filler Controlled Reaction Pyrolysis of Polymers journal January 1992
Improved Rim Processing with Silicone Internal Mold Release Technology journal September 1984
Reaction Bonding and Mechanical Properties of Mullite/Silicon Carbide Composites journal November 1994
Applications of Transition Metal Compounds in the Preparation of Useful Silicon-Containing Ceramics book November 1993
Reaction bonding of aluminum oxide (RBAO) composites: Processing, reaction mechanisms and properties journal January 1994
Processing, Properties and Structural Development of Polymer-Derived Fiber-Reinforced SiC book November 1993
Application of preceramic polymers in powder metallurgy: their use as low-loss binders and for the in situ formation of dispersed ceramic phases in the metal matrix journal January 1994
Microstructure Development of Oxycarbide Composites during Active-Filler-Controlled Polymer Pyrolysis journal January 1993

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Related Subjects

/427/501/
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