在前期研究工作的基础上,着重讨论了不同颗粒体积分数对Al2O3/钢基复合材料900 ℃下高温磨料磨损抗力的影响.结果表明:适当的颗粒体积分数(39 %左右)的复合材料因颗粒对基体保护好,起主要抗磨作用,因而高温抗磨性较好;较高或较低颗粒体积分数的复合材料因颗粒脱落或基体磨损严重使得其高温抗磨性较低.
Based on previous work, abrasive wear resistance of Al2O3/steel composites with different Al2O3 particle volume fraction (VOF) at 900 ℃ was investigated. It can be got from the experimental results that a suitable particle volume fraction is important to protect the metal matrix from wear at elevated temperature. The less the particle VOF, the poorer the abrasive wear of the composites due to bulk matrix easily worn off by grits. The more the particle VOF, however, the poorer the abrasive wear of the composites, too. The reason is that Al2O3 particles are easily dug out by grits during wearing. When the particle VOF is 39 %, the wear resistance of test composites is excellent.
参考文献
| [1] | 杜健. α-Al2O3/耐热钢基铸造复合材料界面现象的研究[D].西安:西安交通大学,1996. |
| [2] | 王恩泽,郑燕青,邢建东,等. 铸渗法制备颗粒增强钢基复合材料的研究[J]. 复合材料学报, 1998,15(2):12-17. |
| [3] | 鲍崇高,王恩泽,高义民,等. 陶瓷颗粒表面沉积层的性能研究[J]. 复合材料学报,2000,17(3):116-119. |
| [4] | 周庆德,饶启昌,苏俊义. 铬系抗磨铸铁[M]. 西安:西安交通大学出版社,1986.87-101. |
| [5] | 王华明. 铸渗法制备WC颗粒/金属基表面复合材料的研究[D].西安: 西安交通大学, 1986. |
| [6] | 武文忠. 抗高温磨料磨损合金及其磨损试验研究[D].西安: 西安交通大学, 1996. |
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