Advances in the Polymer-derived Continuous SiC Fibers

To prepare continuous silicon caxbide fibers, four methods were reviewed, of which polymer route is taking its predominace these days. The polymer route to ceramic fibers, usually containing steps of polymer synthesis, melt spinning, curing and pyrolysis, was thoroughly studied. The development of the fibers was discussed and new generation fibers for ultrahigh-temperature applications, which is the main advance in this field, were remarked by Hi-Nicalon, Hi-Nicalon type S, Sylramic, Tyranno SA and Siboramic. Current situation of the polymer-derit.ed continuous SiC fibers at home and abroad, as well as their prospects and countermeasures, were also dicussed in the paper.