Composite ceramics and ceramic particles and method for producing ceramic particles and bulk ceramic particles
US10392311B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2017 |
| Grant date | Aug 27, 2019 |
| Priority date | — |
| Expiry date | Oct 6, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/95
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Methods for producing Polymer Derived Ceramic (PDCs) particles and bulk ceramic components and compositions from partially cured gelatinous polymer ceramic precursors and unique bulk composite PDC ceramics and unique PDC ceramic particles in size and composition. Methods of making fully dense PDCs over approximately 2 μm to approximately 300 mm in diameter for applications such as but not limited to proppants, hybrid ball bearings, catalysts, and the like. Methods can include emulsion processes or spray processes to produce PDCs. The ceramic particles and compositions can be shaped and chemically and materially augmented with enhancement particles in the liquid resin or gelatinous polymeric state before being pyrolyzed into ceramic components. Nano-sized ceramic particles are formed from the green body produced by methods for making bulk, dense composite ceramics. The resulting ceramic components have a very smooth surface and are fully dense, not porous as ceramic components from the sol-gel process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.