| 摘要 |
<p>In a port liner having a depressed portion at an outer peripheral surface, a reinforcement is filled into the depression which meets either one or both of requirements that differences in coefficient of thermal expansion at 800 DEG C and Young's modulus between the reinforcement and the material of the liner body are in a range of +/-0.1% and in a range of +/-1,000 kgf/mm<2>, respectively. Alternatively, a stress-releasing slit may be formed in a wall of the port liner body.</p> |
