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Title: Ceramic composite coating

A thin, room-temperature-curing, ceramic composite for coating and patching etal substrates comprises a sol gel silica glass matrix filled with finely ground particles or fibers, preferably alumina. The sol gel glass is made by adding ethanol to water to form a first mixture, then separately adding ethanol to tetraethyl orthosilicate to form a second mixture, then slowly adding the first to the second mixture to make a third mixture, and making a slurry by adding the finely ground particles or fibers to the third mixture. The composite can be applied by spraying, brushing or trowelling. If applied to patch fine cracks, densification of the ceramic composite may be obtained to enhance sealing by applying heat during curing.
Inventors:
 [1]
  1. (Aiken, SC)
Issue Date:
OSTI Identifier:
870793
Assignee:
United States of America as represented by Department of Energy (Washington, DC) SRS
Patent Number(s):
US 5595945
Contract Number:
AC09-76SR00001
Research Org:
E I DUPONT DE NEMOURS & CO INC
Country of Publication:
United States
Language:
English
Subject:
ceramic; composite; coating; room-temperature-curing; patching; etal; substrates; comprises; sol; silica; glass; matrix; filled; finely; ground; particles; fibers; preferably; alumina; adding; ethanol; water; form; mixture; separately; tetraethyl; orthosilicate; slowly; third; slurry; applied; spraying; brushing; trowelling; patch; fine; cracks; densification; obtained; enhance; sealing; applying; heat; curing; composite coating; ceramic composite; glass matrix; tetraethyl orthosilicate; applying heat; silica glass; finely ground; ground particle; ground particles; /501/