Method of firing green structures containing organics
US6287510A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 23, 1999 |
| Grant date | Sep 11, 2001 |
| Priority date | — |
| Expiry date | Nov 23, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/195
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of forming an article involves forming a mixture of components powder materials, organic binder, solvent for the binder, non-solvent with respect to at least the binder, the solvent, and the powder materials, wherein the non-solvent is lower in viscosity than the binder combined with the solvent, mixing and plasticizing, and shaping to form a green structure. The green structure is dried and fired to impart strength and form the product article. The firing is done by heating to a first temperature of less than 200.degree. C. at a heating rate of no greater than 1.degree. C. per minute, heating from the first temperature to a second temperature of 200.degree. C. to 300.degree. C. at a heating rate of 2.degree. C. per minute to 20.degree. C. per minute, heating from the second temperature to a third temperature of above 300.degree. C. to about 500.degree. C. at a heating rate of no greater than 1.degree. C. per minute, and heating from the third temperature to a fourth temperature of greater than about 500.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.