Microporous ceramic materials and the producing method of the same
US7008576B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2003 |
| Grant date | Mar 7, 2006 |
| Priority date | — |
| Expiry date | Jun 17, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B38/0022
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Microporous ceramic materials used in structural materials, high-temperature filters, electrode materials or preform materials for infiltration by homogeneously mixing and molding a ceramic precursor powder polymer. The powder is saturated by introducing fluid to a pressure vessel. The fluid is super saturated by adjusting pressure in the vessel. Micropores are formed in the molded bodies by evolving the fluid from the molded bodies by heating and hardening the molded bodies. The hardened molded bodies are heated to pyrolysis. Pore characteristics (e.g., pore size and pore size distribution) suitable to target materials are controlled by adjusting pressure at a non-critical state without requiring additional processes or devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.