干滑动摩擦下SiC/Al复合材料摩擦磨损性能 |
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引用本文: | 戴礼权,何国球,吕世泉,叶赟,刘晓山,卢棋. 干滑动摩擦下SiC/Al复合材料摩擦磨损性能[J]. 航空材料学报, 2016, 0(6): 61-67. DOI: 10.11868/j.issn.1005-5053.2016.6.010 |
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作者姓名: | 戴礼权 何国球 吕世泉 叶赟 刘晓山 卢棋 |
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作者单位: | 同济大学 材料科学与工程学院 上海市金属功能材料开发应用重点试验室,上海,201804 |
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摘 要: | 采用摩擦磨损试验机研究不同滑动距离下的SiC颗粒增强铝基复合材料( SiC体积含量为9%)的摩擦磨损性能。在载荷45 N(5 MPa)、转速200 r/min、转动距离分别为5000 r、10000 r以及20000 r条件下,进行连续干滑动摩擦实验。结果表明:在长程连续干滑动下,其摩擦系数变化可分为磨合区、缓慢上升区、加速上升区3个阶段;随着摩擦距离的增加,基体表面的温度急剧升高,进而发生黏着磨损,产生塑性流变区,多种摩擦方式并存使得该条件下摩擦系数与磨损量均增加。
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关 键 词: | SiC颗粒增强铝基复合材料 干滑动摩擦 塑性流变区 摩擦系数 磨损率 |
Tribological Investigation of SiC/Al Composite under Dry Sliding Friction |
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Abstract: | The effect of sliding distances on aluminum matrix composite reinforced by silicon carbide particle with volume fraction of 9% was investigated. Friction behavior and wear resistance of the composite with distances of 5000 r, 10000 r and 20000 r were stud-ied under dry sliding conditions of the same speed and load(200 r/min, 45 N). The results show that the friction coefficient in long-range sliding process displays three stages:wearing zone, stable zone and accelerating zone. The matrix surface produces severe adhe-sion because of the rising temperature and then leads plastic areas, in which both friction coefficient and wear rate are increased. |
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Keywords: | silicon carbide reinforced aluminum matrix composite continuous dry sliding friction plastic area friction coefficient wear rate |
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