Refractory composite materials protected against oxidising at high temperature, precursors of the said materials, their preparation
US6331362A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 1999 |
| Grant date | Dec 18, 2001 |
| Priority date | — |
| Expiry date | Apr 21, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2993
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention provides: PA1 refractory composite materials protected against oxidation at high temperature; said materials are of the type made by a solid process and include, in characteristic manner, over their entire outside surface, a complex layer containing at least one silicate corresponding to a densification additive used to make them, silica, and a vitreous boron-containing silicate phase; PA1 precursors or intermediates for preparing said materials; said precursors including, in characteristic manner, over their entire outside surface, at least one layer of a precursor for borosilicate glass or a layer of borosilicate glass; and PA1 a method of preparing said materials (by preparing said precursors) and a method of preparing said precursors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.