Coating precursor and method for coating a substrate with a refractory layer
US7238390B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 14, 2002 |
| Grant date | Jul 3, 2007 |
| Priority date | — |
| Expiry date | Oct 14, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K3/013
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.