Electron Microstructure Study of Z_rO₂-C_aO-Al₂O₃ Ceramics Materials

Abstract:

Study microcosmic structure feature of ceramics water-mouth new materials using electron micro analysis, analyze its effect to mechanical properties, prove big or small crystal grains are the main factor affecting materials, the existing of structure defect can improve fracture toughness of materials. In the latest years, in order to solve Al₂O₃ forming a tumor, we develop Z_rO₂-C_aO-Al₂O₃ ceramics water mouth new materials whose main composition is Z_rO₂.[1] The thermal conductivity of this material is low, heating stability is good, chemical properties are stable and it don’t soak with most melting metal, so it obtain good effect in practical application. Reducing Al₂O₃ phenomenon of forming a tumor happening, which can extend the water mouth using time limit. But this materials’ sintering temperature is high, bending strength and fracture toughness are not good. Immersion water mouth made by the materials will easily occur disruption phenomenon after using a period of time. In order to solve this problem, this essay study microstructure feature of the materials using electron micro analysis, provide scientific basis for improving materials’ quality.