泥浆中磨粒对Al_2O_3增强Y-TZP复合陶瓷材料耐磨性的影响(英文)  

Effect of Abrasive Particles in Slurry on the Wear Resistance of Alumina-reinforced Y-TZP Composites

作　　者：梁小平[1] 葛志平[1] 靳正国[1] 杨正方[1] 袁启明[1] 

机构地区：[1]天津大学先进陶瓷与加工技术教育部重点实验室

出　　处：《人工晶体学报》2004年第4期601-604,共4页Journal of Synthetic Crystals

基　　金：MajorProjectsupportedby 863Program (No .2 0 0 2A330 82 )

摘　　要：在不同磨粒的 5 %NaOH泥浆中 ,采用销 盘式摩擦磨损试验机考察了磨粒对氧化铝增强四方氧化锆多晶陶瓷材料 (ADZ)耐磨性的影响进行了研究。结果表明 :尖锐SiO2 磨粒对ADZ复合陶瓷材料磨损的影响要比球形SiO2 磨粒严重得多 ,磨料硬度是影响陶瓷材料磨损率的重要因素 ,磨损率随磨粒硬度的提高而增大。在不同形状的SiO2磨粒的泥浆中 ,ADZ陶瓷材料的主要磨损机理为塑性变形和微犁削。在高硬度Al2 O3 磨料的泥浆中 ,ADZ陶瓷材料磨损表面以断裂机制占主导地位。The effect of the properties of abrasive particles in slurry, including the morphology and hardness, on the wear resistance of alumina-reinforced yttria-stabilized zirconia polycrystals (3Y-TZP/10wt%Al_2O_3, 10ADZ) was investigated in 5%NaOH slurry containing different abrasive particles using a pin-on-plate tribometer. The results showed that the wear resistance of ADZ ceramic depends on the properties of the abrasive particles. As expected, the wear resistance is increased with hardness of abrasive particles decreasing, but it is also influenced by the other, more subtle differences in the morphology, that is, the sharper the abrasive particle the higher wear rate. The main wear mechanism of ADZ in SiO_2 particle slurry is plastic deformation and microploughing, but the removal of material is controlled by brittle fracture in the Al_2O_3 slurry.

关 键 词：销-盘式摩擦磨损试验机 磨粒 氧化铝增强Y-TZP复合陶瓷材料 耐磨性 泥浆 硬度 

分 类 号：TQ174.758[化学工程—陶瓷工业]