Preparation method of alumina fiber reinforced alumina foamed ceramic composite material containing interface strengthening structure

• Main Authors: XU DONG, ZHU LUYI, LIU BENXUE, WANG XINQIANG, ZHANG GUANGHUI
• Format: Patent
• Language: Chinese; English
• Published: 14.05.2024
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; NATURAL OR ARTIFICIAL THREADS OR FIBRES; REFRACTORIES; SLAG; SPINNING; TEXTILES; TREATMENT OF NATURAL STONE

The invention relates to a preparation method of an alumina fiber reinforced alumina foam ceramic composite material containing an interface strengthening structure, which comprises the following steps: firstly, preparing alumina nascent fiber which is a type of polymerized aluminum hydroxide colloid fiber in nature and has abundant hydroxyl groups on the surface; in the process of medium-temperature treatment and high-temperature firing of a foamed ceramic composite material green body, a hydroxyl group is used as a surface reaction active site and reacts with the foamed ceramic green body through a chemical cross-linking reaction between the foamed ceramic green body and a surface hydroxyl group to generate an interface strengthening structure; the technical problems that existing physical combination easily causes insufficient interface combination, cannot effectively transmit loads and easily generates microcracks are solved, the foamed ceramic composite material has the advantage of being high in strengt