对Al2O3/Mo复合材料的微观形貌进行了分析,同时测试了Al2O3/Mo复合材料的磨损行为。结果表明,随Al2O3体积分数的增加,基体的密度先增大后减小,显微硬度逐渐增加,磨损过程中产生的切削、犁沟在数量、深度上都有一定程度的减少。当Al2O3的体积分数为3%时,随着磨粒粒度的减小,复合材料的比磨损率逐渐增加,Al2O3的体积分数较高（5%、10%、15%）时,比磨损率随磨料粒径的增大而呈现先增加后减少的趋势。材料的磨损量随载荷增加而增加,材料的磨损量的排列顺序不受载荷变化的影响。在同一载荷下,材料的磨损量随掺杂量的增加呈现下降趋势,但是随着掺杂量的不断增大,磨损量下降趋势减缓。
The microstructure of Al2O3/Mo composite was analyzed and the wear behavior was tested.The analysis results of wear data and wear morphology show that the amount of density first increases and then decreases gradually,but hardness increased with the increasing of the volumn fraction of Al2O3.There is some degree of reduction on the wear produced by the process of cutting,plowing.When the Al2O3 volume fraction is 3%,the specific wear rate of composites increases gradually with the particle size decreases.However,at higher Al2O3 volume fraction（5%,10%,15%）,the specific wear rate first increases and then decreases with the increasing of abrasive grain diameter.The wear loss increases with the increase of the load,while there is no influence on the order.On the same load,the wear loss shows a declining trend with the continuous increase of Al2O3 content,but the speed is slower.
参考文献
| [1] | 李荣久.陶瓷金属复合材料[M].北京:冶金工业出版社,2004:7-9. |
| [2] | 王东辉,袁晓波,李中奎.钼及钼合金研究与应用进展[J].稀有金属快报,2006,25(12):1-7. |
| [3] | 李国军,黄校先,郭景坤.Al2O3基金属陶瓷的研究现状[J].材料导报,2000,14(9):22-24. |
| [4] | Nawa M, Sekino T, Niihara K. Fabrication and mechanical behaviour of Al2O3/Mo nano- composites [J]. Journal of Materials Science, 1994, 29(12): 3185-3192. |
| [5] | 余大江,常春,刘俊涛,姜江.Mo/Al2O3复合材料的耐磨性[J].摩擦学学报,2009,29(5):442-446. |
| [6] | Sbaizero O, Pezzotti G, Nishida T. Fracture energy and R- curve behavior of Mo/Al2O3 composites [J]. Acta Mater, 1998, 46(2): 681-687. |
| [7] | 常春,余大江,刘少斌,刘俊涛,李木森.Mo/Al2O3材料的微观结构和抗腐蚀性[J].硅酸盐学报,2008,36(8):1124-1128. |
| [8] | 刘开琪,潘伟,樊震坤,张会军,石汝军,殷书建,任允鹏.Mo-Al2O3金属陶瓷的氧化和渣蚀行为研究[J].稀有金属材料与工程,2007,36(1):238-240. |
| [9] | 代宝珠,魏世忠,徐流杰,彭光辉,李继文,张国赏.Al2O3对钼合金组织与性能的影响[J].河南科技大学学报:自然科学版,2010,31(1):1-4. |
| [10] | 鲍崇高,王恩泽,高义民,邢建东.颗粒体积分数对Al2O3/钢基复合材料高温抗磨性影响[J].复合材料学报,2001,18(2):61-64. |
| [11] | 材料耐磨抗蚀及其表面技术丛书委员会.材料的磨粒磨损[M].北京:机械工业出版社,1990:31-38. |
| [12] | 尤显卿,任昊.颗粒增强钢基复合材料摩擦学研究进展[J].兵器材料科学与工程,2003,26(5):57-61. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%