| 摘要 |
PURPOSE: To obtain the subject fibers by coating carbonaceous fibers with a specific metal oxide so as to withstand chemical degradation at high temperatures. CONSTITUTION: The fibers are obtained by coating carbonaceous fibers of carbide, graphite or carbon with a metal oxide withstanding chemical degradation at temperatures of >=1,600 deg.C (e.g. oxide of Be, Mg, Al, Sc, Y, La, lanthanides, Th, Zr, Hf, or the, like) to form a non-porous layer on each of the fibers so as to be about 250Åin the minimum thickness to ensure the carbonaceous fibers to withstand chemical degradation at temperatures of >=1,600 deg.C. |
