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Title: Hydridosiloxanes as precursors to ceramic products

Abstract

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.

Inventors:
 [1];  [2];  [3]
  1. San Jose, CA
  2. Piedmont, CA
  3. Palo Alto, CA
Publication Date:
OSTI Identifier:
870979
Patent Number(s):
US 5635250
Assignee:
SRI International (Menlo Park, CA)
DOE Contract Number:  
N00014-85C-0668
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
hydridosiloxanes; precursors; ceramic; products; method; provided; preparing; hydridosiloxane; starting; materials; pyrolyzing; rise; silicious; si-h; bonds; catalytically; activated; hydrogen; atoms; replaced; nonhydrogen; substituents; preceramic; pyrolyzed; selected; atmosphere; desired; product; prepared; technique; silica; silicon; oxynitride; carbide; metal; silicates; mullite; ceramic products; ceramic product; hydrogen atoms; starting material; ceramic material; silicon carbide; ceramic materials; starting materials; ceramic precursor; hydrogen atom; silicon oxynitride; selected atmosphere; preparing ceramic; ceramic mater; /427/501/

Citation Formats

Blum, Yigal D, Johnson, Sylvia M, and Gusman, Michael I. Hydridosiloxanes as precursors to ceramic products. United States: N. p., 1997. Web.
Blum, Yigal D, Johnson, Sylvia M, & Gusman, Michael I. Hydridosiloxanes as precursors to ceramic products. United States.
Blum, Yigal D, Johnson, Sylvia M, and Gusman, Michael I. 1997. "Hydridosiloxanes as precursors to ceramic products". United States. https://www.osti.gov/servlets/purl/870979.
@article{osti_870979,
title = {Hydridosiloxanes as precursors to ceramic products},
author = {Blum, Yigal D and Johnson, Sylvia M and Gusman, Michael I},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/870979}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {1}
}

Works referenced in this record:

Microcrystalline Ceramic Composites by Active Filler Controlled Reaction Pyrolysis of Polymers
journal, January 1992


Microstructure Development of Oxycarbide Composites during Active-Filler-Controlled Polymer Pyrolysis
journal, January 1993


Reaction Bonding and Mechanical Properties of Mullite/Silicon Carbide Composites
journal, November 1994


Reaction bonding of aluminum oxide (RBAO) composites: Processing, reaction mechanisms and properties
journal, January 1994


Improved Rim Processing with Silicone Internal Mold Release Technology
journal, September 1984