INORGANIC FIBERS FOR FIBER BUNDLES, PROCESS FOR PRODUCTION OF THE INORGANIC FIBERS, INORGANIC FIBER BUNDLES FOR COMPOSITE MATERIAL PRODUCED USING THE INORGANIC FIBERS, AND CERAMIC-BASED COMPOSITE MATERIAL REINFORCED BY THE FIBER BUNDLES

摘要

Disclosed are an inorganic fiber for fiber bundles which suppresses a decrease in the fiber strength due to damage of the fiber during the production of an inorganic fiber bundle for composite materials, avoids contact between the fibers in a fiber bundle during the production of a composite material, and is capable of forming an interface layer with the matrix over the entire surface of the fibers, a method for producing the inorganic fiber for the fiber bundles, and a ceramic-based composite material which uses an inorganic fiber bundle for composite materials including the inorganic fiber for fiber bundles, as a reinforcing fiber and a ceramic as a matrix, and exhibits sufficient strength, sufficient fracture energy and excellent durability when the composite material is subjected to stress in a high temperature oxidizing atmosphere. Also disclosed are an inorganic fiber for fiber bundles that constitutes an inorganic fiber bundle for composite materials, which meanders in the longitudinal direction and has a meandering pitch of 3 mm to 40 mm and a meandering width of 0.1 mm to 5 mm, and a method for producing the inorganic fiber for fiber bundles.