Coating precursor and method for coating a substrate with a refractory layer
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United States of America Patent
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Jul 3, 2007
Grant Date -
Dec 9, 2004
app pub date -
Oct 14, 2002
filing date -
Oct 15, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The purpose of the invention is a coating precursor comprising a silicone resin and a mineral filler capable of chemically reacting so as to produce a solid layer on a substrate and a cohesive refractory layer after a calcination operation. The precursor may also include an additive capable of reducing its viscosity. Another purpose of the invention is a method for coating a given surface of a substrate with at least one refractory layer containing silicon in which the substrate is coated with a coating precursor according to the invention so as to form a green layer and a heat treatment is carried out to calcine the said green layer and to form a cohesive refractory layer. The invention is a means of obtaining a protective coating capable of resisting oxidising environments, liquid metal and a solid or molten salt.
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