Plasma-assisted process of ceramization of polymer precursor on surface, surface comprising ceramic polymer
US11313040B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 24, 2017 |
| Grant date | Apr 26, 2022 |
| Priority date | — |
| Expiry date | Mar 24, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C18/127
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention lies in the fields of chemistry and materials engineering. More specifically, the present invention describes a process of heat treatment of polymeric precursors including as active phases particle charge or a mixture of active phases with inert phases called “fillers”. It is also described a surface including ceramic polymer obtained by said process. The volumetric positive variation resulting from the formation of new phases, which for their formation, incorporate atoms from the gaseous phase, contributes to a minor shrinkage of the composition during the heat treatment process. The process of the present invention allows obtaining the desired phases in smaller treatment times and lower temperatures, when compared to a thermal treatment process as conventional pyrolysis (PC) due to the presence of highly reactive species, as for example atomic nitrogen produced by the dissociation of nitrogen molecules in the plasma environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.