摘要
研究了ZTA陶瓷材料的力学性能和摩擦磨损性能。采用共沉淀法制备了钇稳定氧化锆溶胶,再与市售国产氧化铝混合,700℃煅烧后得到ZTA粉料。m(Al2O3)∶m(ZrO2)=80∶20的复合材料在1500℃至1600℃常压烧结。通过XRD、SEM等分析手段研究了材料的显微结构与性能,研究结果表明:ZTA陶瓷材料在1600℃烧成后获得了最高的密度、最好的耐磨性和最佳的力学性能,其抗弯强度、断裂韧性和维氏硬度分别达到了830 MPa,12.7 MPa.m1/2和17.3 GPa。ZrO2的加入有利于提高氧化铝材料的力学性能和耐磨性。
The mechanical and wear properties of ZTA ceramics were studied in this work. The alumina powder was mixed with the Zr（OH）4 prepared by precipitation method. The mixture was calcined at 700℃. The m（Al2O3）：m（ZrO2=80：20 composites were sintered at different temperatures between 1500℃ and 1600℃ in air. The microstructure and properties of the samples were investigated by XRD and SEM. The results showed that the highest density, the best wear resistance, the maximum bending strength of 830MPa, the highest fracture toughness of 12.7 MPa· m1/2 and the highest hardness of 17.3GPa were obtained for the ZTA composite sintered at 1600℃. The mechanical and wear properties of Al2O3 were improved by added ZrO2.
出处
《陶瓷学报》
CAS
2008年第2期105-110,共6页
Journal of Ceramics
基金
广东省科技计划资助项目(编号:2007A010500009)
关键词
氧化铝
氧化锆
力学性能
耐磨性
Al2O3, ZrO2, mechanical property, wear property
