Coating material for honeycomb structure, outer peripheral coating of honeycomb structure and honeycomb structure with outer peripheral coating

摘要

PROBLEM TO BE SOLVED: To improve the toughness of an outer peripheral coating of a honeycomb structure and effectively suppress the occurrence of cracks in the outer peripheral coating during drying and heat treatment, a coating material for a honeycomb structure, an outer peripheral coating of the honeycomb structure and a honeycomb structure. The challenge is to provide. SOLUTION: A first ceramic fiber having an average axial length of 80 to 200 μm is 1 to 10% by mass in an inorganic raw material, and a second ceramic fiber having an average axial length of 50 to 70 μm is inorganic. A coating material for a honeycomb structure containing 0.1 to 15% by mass in the raw material. [Selection diagram] Fig. 2