Alumina-silica based fiber, ceramic fiber, ceramic fiber aggregation, holding seal material and manufacturing methods thereof, as well as manufacturing method of alumina fiber aggregation

摘要

A holding seal material which has ceramic fibers aggregated into a mat shape (4) as a constituent element, and is placed in a gap between a ceramic body capable of allowing a fluid to flow through the inside thereof (2) and a metal shell (3) covering the outer circumference of the ceramic body, wherein said ceramic fibers are partially bonded to each other by a ceramic adhesive.