Nissan Motor Company Limited

Nobuhiko Okoshi

Shin Fujii

Akira Oyamada

Satoshi Ambe

Shigeyoshi Nakagawa

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.

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Tochigi, Japan

Nobuhiko Okoshi