| 摘要 |
PROBLEM TO BE SOLVED: To obtain a carbon fiber-containing firing jig enhanced in the dispersibility of carbon fibers, increased in the binding strength of the carbon fibers to a matrix, improved in the strength and toughness of raw material and in the life of the jig, and prevented in generation of cracks, by using a graphite and ceramic composite material comprising a graphitic raw material, SiC, SiO2 , BN as another component, and the carbon fibers. SOLUTION: This carbon fiber-containing firing jig comprises a graphite and ceramic composite material comprising 5-20 wt.% of a graphite raw material, 10-70 wt.% of SiC, 1-30 wt.% of SiO2 , 1-5 wt.% of BN and 0.1-2 wt.% of carbon fibers. The dispersing of the carbon fibers whose surfaces are coated with a thermosetting resin improves the binding force of the fibers on their surfaces, enhances their binding strength to the matrix, expresses the large pulling resistance of the fibers and improves the strength and breaking toughness of the raw material. The carbon fibers to be compounded comprise either of PAN-based carbon fibers and pitch-based carbon fibers, and has a length of 2-30 mm. The coating resin is used for maintaining the binding force also after calcination, and the graphitic raw material comprises natural graphite, artificial graphite or kish graphite. |
