COMPOSITE INORGANIC FIBER AND METHOD FOR PRODUCING SAME, AND COMPOSITE INORGANIC FIBER PROCESSED ARTICLE AND METHOD FOR PRODUCING SAME

摘要

Disclosed are: a composite inorganic fiber having corrosion resistance and durability under high temperatures, which can be used as a reinforcing material for composite materials, a material for a heat filter for blocking a heat current or a material for a heat reflector which emits radiation heat when heated; a method for producing the composite inorganic fiber; a composite inorganic fiber processed article; and a method for producing the composite inorganic fiber processed article. Specifically disclosed is a composite inorganic fiber (10) which has a multilayer structure including an inner shell structure (11) having heat resistance and an outer shell structure (12) having heat resistance and corrosion resistance. The thermal expansion coefficient of the inorganic material constituting the outer shell structure (12) is within the range of ±10% of the thermal expansion coefficient of the inorganic material constituting the inner shell structure, and the thickness of the outer shell structure is 0.2-10 µm (inclusive).