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(4) Plastically deformable ceramics A class of ternary synthetic ceramic materials with a slip system at room temperature to high temperature represented by Tii3SiC2. It has dual properties of metal and ceramics and has good thermal shock resistance, electrical conductivity, thermal conductivity, and high-temperature resistance. (Use temperature 1400 ° C), anti-oxidation, especially with processability, is new exotic material.
(5) Fiber and whisker-reinforced ceramic matrix composites These materials tolerate defects in the ceramic matrix, but the defects are not sensitive to crack propagation. It relies on the reinforcement of the fiber to maintain high strength and the fiber and matrix fracture process. The energy consumption increases the fracture toughness and fracture work of the material. This type of material is particularly widely used in important structural parts such as aerospace, aerospace parts, tools, molds, etc.
(6) Laminated structure ceramic matrix composite material This material is also called bionic multiphase ceramic porcelain. It is initially a structural composite material in which SiC sheets and graphite sheets are alternately laminated. Its fracture toughness and fracture work are several times to several tens of times higher than conventional ceramics, reaching 15 MPa·m 12 and 4250 J·m -2, respectively. The guiding idea is to artificially manufacture the defect layer (graphite) and use the defect layer to block the crack propagation. This is the latest research hotspot and has achieved good results.