Methods for synthesizing bulk, composite and hybrid structures from polymeric ceramic precursors as well as other polymeric substances and compounds
US8293048B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Sep 1, 2009 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | Dec 7, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
This invention relates to polymer derived ceramics (PDC's) and more particularly, to methods and product made by using polymeric derived ceramic precursors to synthesize dense, crack-free bulk ceramics in a technique using sacrificial molds, coating processes, replication processes, assembly processes and finishing processes; where gas release paths are created and maintained during these processes to release gases generated during pyrolysis of the ceramic precursor. It is a primary objective of the present invention to provide a well defined method to create PDC voxels which are interconnected as a bulk (high density) material. Such a material is effectively a lattice with face centered cubic or hexagonal close pack geometry. A second objective of the present invention is to provide a method for bulk, high density material to be combined with fully dense material in a hybrid material. A third objective of the present invention is to provide a method for different types of bulk and fully dense materials, and other items (optionally), to be combined in to a composite material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.