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

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。

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.