二氧化锆掺杂硅酸盐陶瓷增韧断裂韧性研究

Study on Fracture Toughness of Zirconia-Enhanced Ceramics

摘要: 本试验以天然硅酸盐矿物泥料为基体，以ZrO₂、Al₂O₃、MgO为添加剂，制备增韧普通陶瓷。通过探究添加剂的添加量研究提高陶瓷断裂韧性的最佳添加物配比。从而通过添加ZrO₂、Al₂O₃、MgO改良陶瓷坯料配方提高陶瓷的断裂韧性。试验结果表明：当添加剂的添加量在ZrO₂:Al₂O₃:MgO = 5:3:3 (即5%ZrO₂、3%Al₂O₃、3%MgO)时对增强陶瓷断裂韧性和耐腐蚀性的效果最佳。

Abstract: In this experiment, by exploring the amount of additives, the best additive ratio was found to im-prove the fracture toughness of ceramics, and on this basis, the corrosion resistance of ceramics was enhanced. The three crystal types of ZrO₂ will convert to each other with the change of temperature, and ZrO₂ will be from phase change toughening through the control of temperature, supplemented by the regulation of Al₂O₃ and MgO, to achieve the purpose of ceramic toughening. Therefore, the facture toughness of ceramics can be improved by adding ZrO₂, Al₂O₃ and MgO to improve the formulation of ceramic blank. When the amount of additive is ZrO₂:Al₂O₃:MgO = 5:3:3 (that is, 5% ZrO₂, 3% Al₂O₃, 3% MgO), it is considered the best to enhance the fracture toughness and corrosion resistance of ceramics.