A STRENGTH EVALUATION OF SIC FIBERS PREPARED BY RFCVD

Large-diameter SiC Fibers have been prepared using chemical vapor depo sition by radio-frequency heating; this article focuses on the evoluti on of fiber strength in the preparatory and secondary treatment stages of this preparation. Fibers that are produced by this process show hi gh tensile strength (>3,500 MPa) for various gauge lengths. furthermor e, these fibers exhibit good strength retention capability during a wi de range of high temperatures. In keeping with the goal to develop cos t-effective metal/resin matrix composites of high quality using such f ibers, a substantial amount of work on surface modification has been c arried out, and, in fact, also dominates the direction of radio-freque ncy chemical vapor deposition-SiC fibers developments.