Method for producing coated ceramic and firing furnace for carrying out said method

A method for producing a coated ceramic, comprising:

• a step A of preparing a pillar-shaped ceramic having a first end surface, a second end surface, and a side surface, wherein a coating material is applied to at least a part of one or both of the first end surface and the second end surface;
• a step B of preparing an assembly in which the ceramic and at least one heat-generating member are entirely covered with a heat-insulating material, on a condition that the at least one heat-generating member is disposed facing one or both of the first end surface and the second end surface to which the coating material is applied, and the heat-insulating material is in contact with the side surface and surrounds the side surface;
• and
• a step C of firing the coating material applied to at least the part of one or both of the first end surface and the second end surface facing the at least one heat-generating member by generating heat from the at least one heat-generating member of the assembly.