Method of manufacturing white furnace boats for firing ceramic articles and novel furnace boats
US3959002A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 2, 1974 |
| Grant date | May 25, 1976 |
| Priority date | — |
| Expiry date | May 2, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B33/13
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for manufacturing white furnace boats which are used for firing ceramic articles at temperatures up to about 1700.degree. C. The furnace boat is made from a mixture of between 45% and 55% of synthetic corundum having a particle size of between 1 and 2 mm, between 25% and 35% of synthetic corundum having a particle size of between 0.1 and 0.2 mm, between 5% and 20% of kaolin having a particle size of 99% under 0.06 mm and 0.1% over 0.06 mm, and between 5% and 10% of quartz having a particle size of between 0.1 and 2 mm. The product white furnace boats are .alpha.-Al.sub.2 O.sub.3 in the amount of 60% to 70%, mullite in the amount of 20% to 30%, and a glass phase together with some cristobalite in the amount of 5% to 10%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.