Circumferential coating material, circumferential coated honeycomb structure

摘要

A circumferential coating material to be applied to a circumferential surface of a honeycomb structure made of ceramics formed by extrusion, the circumferential coating material including a ceramic raw material that forms a circumferential coating layer,wherein the ceramic raw material contains:a ceramic mixture of first ceramic particles having particulate shapes, and second ceramic particles having particulate shapes and an average particle diameter different from an average particle diameter of the first ceramic particles; anda fiber material having an elongated strip-like shape,wherein the ceramic mixture has particle size distribution including at least two local maximum values, andthe fiber material has an average fiber length ranging from 30 to 100 μm in a longitudinal direction.