| 摘要 |
PROBLEM TO BE SOLVED: To provide an exhaust pipe capable of lowering temperature of exhaust gas when the high temperature exhaust gas flows in the exhaust pipe. SOLUTION: This exhaust pipe has a tublar base material made of metal and a surface coating layer formed on an outer circumferential surface of the base material and composed of a crystalline inorganic material and an amorphous binder material, the crystalline inorganic material is distributed in the state of being multiply stacked one upon another in the direction of thickness of the surface coating layer, in the surface coating layer, the average thickness of the amorphous binder material located on the side of outer circumferential surface relative to the crystalline inorganic material is 20μm or less, and the exhaust gas flows through the interior of the exhaust pipe. COPYRIGHT: (C)2009,JPO&INPIT
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