| 摘要 |
<p>A tubular body for holding nuclear fuel in a nuclear reactor is provided. The tubular body consists of a tubular fiber-reinforced carbonaceous substrate (6) including an aggregate formed of ceramic fibers (3) and a carbonaceous material (4) filled into interstices between the ceramic fibers, and a SiC layer (8) formed at least on an outer surface of the tubular fiber-reinforced carbonaceous substrate. Silicon atoms are diffused from a boundary region between the fiber-reinforced carbonaceous substrate and the SiC layer (8) to an inside of the fiber-reinforced carbonaceous substrate.</p> |
