Patent ID: 8277895

Claim:
A method for manufacturing a ceramic honeycomb structure having a plurality of cells separated by porous ceramic partition walls, the honeycomb structure being covered by a coating material, and the method comprising: a coating material adjustment step for obtaining a coating material by mixing at least water with a ceramic powder aggregate having only one peak in a particle size distribution curve, an average particle size of 23 to 39 μm, and a particle size distribution width of 15 to 33 in the case that the particle size distribution width of a powder is defined as a value obtained by dividing half-value width of peak height in a particle size distribution curve obtained by plotting particle size-based frequency by the peak height; a coating material application step for applying the coating material to cover the outer periphery of a honeycomb structure having a plurality of cells separated by porous ceramic partition walls; and a coating material heat-drying step for forming an outer wall by heat-drying the coating material after the coating material application step.