Method of producing large-sized ceramic honeycomb structure body by integration of small unit blocks
US4353854A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1980 |
| Grant date | Oct 12, 1982 |
| Priority date | — |
| Expiry date | Dec 5, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F21/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of producing a large-sized body of a ceramic honeycomb structure, comprising the steps of integrating unfired unit blocks each having a prismatic shape and a honeycomb structure with axial gas passages into a large-sized body by bonding the unit blocks to one another with a bonding agent and firing this body. The unit blocks are formed of a ceramic composition consisting of a powdered ceramic material and completely gasifiable substances, and essential components of the bonding agent are also completely gasifiable substances such as a combination of an organic binder material used in the ceramic composition and a solvent for this binder material. The gasifiable substances present in the large-sized body are completely dissipated by heating before the occurrence of sintering of the ceramic material by firing, so that the fired product is a wholly and homogeneously ceramic body of a honeycomb structure highly resistant to thermal shocks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.