论文简介：

毕业论文-铜基复合材料的制备及微动磨损特性，共33页，14689字
毕业设计说明书（论文）中文摘要
本文采用共沉淀法制备了Al2O3陶瓷颗粒弥散增强铜基复合材料，利用球-面接
触式摩擦磨损试验机研究了复合材料的摩擦磨损行为，研究了Al2O3的不同比例、
载荷等对复合材料硬度、摩擦系数和磨损量的影响，结果表明：铜基复合材料的
硬度和耐磨性均高于纯铜，强化相的加入提高了基体的抗磨损性能，随着陶瓷颗
粒含量的增加，铜基复合材料的耐磨损性能出现先升高后下降的趋势，Al2O3wt%
为 2%时，相对耐磨性ε达到最大值 3.2，其综合性能以Al2O3含量为 2%时最佳。摩
擦系数随载荷的增加呈现先上升后下降的趋势；铜基复合材料的摩擦磨损主要以
氧化磨损为主，并伴有少量的粘着磨损和磨粒磨损。
关键词
铜基复合材料，相对耐磨性，摩擦磨损，共沉淀法

毕业设计说明书（论文）外文摘要
Title
The preparation technology of copper-based composites and the
character of the inching wear
Abstract
In this thesis,the nano-Al2O3-dispersed strengthening copper-based composites was
prepared by using the method of co-precipitation.Frictional wear behavior of the
composite was studied by using ball-on-flat friction wear testing machine. The
influences of the load and proportion of Al2O3 on the hardness, friction coefficient and
wear-loss were investigated. The results showd that the hardness and wear resistance of
the composite samples were all higher than that of the pure copper, the strengthening
phase improved the anti-wear properties of matrix.The wear resistance of copper-based
composite increased firstly and then descended with the increasing content of Al2O3.
The relative wear resistance ε reached the maximum value 3.2 at Al2O32wt% and the
combination property were optimally at this content. The friction cofficient increased
firstly and then decreased as load increasing.The friction-wear of composite was
primary of oxidative wear,and accompany weals adherence wear and abrasion wear.
Keywords
copper-based composites, relatively wear resistance, frictional
wear,co-precipitation

目录
1 绪论 .....
1.1 铜基复合材料的研究进展 .....
1.2 颗粒增强铜基复合材料的制备方法 .......
1.2.1 粉末冶金法 .....
1.2.2 机械合金法 .....
1.2.3 热还原反应法 ...
1.2.4 原位反应合成法 .
1.2.5 喷射沉积法 .....
1.2.6 共沉淀法 .......
1.3 铜基复合材料的发展趋势 .....
1.4 本课题的研究目的 .
1.5 本课题的研究思路 .
2 纳米Cu/Al2O3复合粉体的制备 ....
2.1 实验原料 ......... 5
2.2 实验原理 ......... 6
2.3 实验设备 ......... 6
2.4 制备方法 ......... 6
2.4.1 CuO/Al2O3复合粉体的制备 ... 6
2.4.2 复合粉体的还原 . 7
2.5 检测手段 ......... 7
2.6 制备结果 ......... 8
3 铜基复合材料块体的制备 ....... 9
3.1 实验设备与模具 ... 9
3.2 粉体量的确定 .... 10
3.3 热压成型步骤 .... 10
3.4 热压烧结工艺 .... 11
4 铜基复合材料的力学性能 ...... 12
4.1 显微硬度测试 .... 12
4.2 Al2O3含量对硬度的影响 ...... 12
5 纳米Al2O3弥散强化铜基复合材料摩擦磨损性能 ........ 12
5.1 实验方法 ........ 13
5.2 实验方案与实验结果 ........ 14
5.3 Al2O3含量对复合材料摩擦系数和磨损量的影响 ...... 14
5.3.1 Al2O3 含量对复合材料摩擦系数的影响 . 14
5.3.2 Al2O3含量对复合材料磨损量的影响 .... 16
5.3.3 三维形貌和轮廓分析 ...... 17
5.4 载荷对复合材料摩擦系数和磨损量的影响 18
5.4.1 载荷对复合材料摩擦系数的影响 ......
5.4.2 载荷对复合材料磨损量的影响 ........
5.4.3 磨痕SEM、三维轮廓和磨损机理分析 ...
结 论 .....
致 谢 .....
参 考 文 献
在读期间取得的成果...

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