Cylindrical can body and induction heating catalyst device

A cylindrical can body capable of housing a honeycomb structure therein, the cylindrical can body comprising:

• a coil for induction-heating the honeycomb structure;
• a cylindrical member made of an insulating material;
• and
• a cylindrical metal member capable of housing the coil and the cylindrical member therein,
• wherein, in a cross section parallel to an axial direction of the cylindrical member,
• (i) the coil is provided radially outward from an inner circumferential surface of the cylindrical member, and at least a part of the coil is embedded in the cross section of the cylindrical member;
• or
• (ii) the coil is provided on an outer circumferential portion of the cylindrical member,
• wherein the insulating material comprises any one of silicon nitride, sialon, silicon carbide, cordierite, zirconia and mullite as a main component, or a composite material thereof as a main component, and
• wherein the cylindrical member has a thickness of 10 to 30 mm.