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| 摘要: |
| 采用SRV摩擦磨损试验机考察了激光改性球墨铸铁（QT450－10）的抗磨性能。结果表明，激光处理的球墨铸铁具有理想的表面形貌和较高的表面硬度，在润滑油添加剂的作用下，其抗磨性能提高1－2个数量级。对常用的6种添加剂的测试发现，其抗磨能力依次为二烷基二硫代磷酸锌（ZDDP）＝二烷基二硫代磷酸钼（MoDTP）＞磷酸三甲酚酯（TCP）＞硼化油酸甘油酸（BOG）＞硫化异丁烯（SO）＞氯化石蜡（CP）＞液体石蜡（LP），承载能力顺序与此类似。同时采用SEM和EDS对磨斑表面形貌和元素的面分布进了研究。 |
| 关键词: 激光改性 极压抗磨添加剂 球墨铸铁 抗磨性能 |
| DOI： |
| 分类号:TG143.5 |
| 基金项目:国家自然科学基金项目(29901006) |
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| Study on Effect of Lubricating Additives on Wear-Resistance of Nodular Cast Iron Modified by Laser Microprecision Treatement |
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XIA Yanqiu LIU Weimin XUE Qunji Lin ziguang
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| Abstract: |
| Nodular cast iron specimens were treated by laser microprecision technology. The friction and wear behavior of the modified samples were investigated on a SRV testing machine. The results showed that laser microprecision treatment can offer nodular cast iron a good surface topography and high rigidity, which are beneficial to tribology properties under lubrication with additives. The wear-resistance can be increased one or two orders of magnitude. This paper selested 6 additives in liquid paraffin oil their wear-resistance are ranged by the order: Zinc dialkydithiophosphate (ZDDP)>Molybdenum dialkydithiophosphate (MoDTP) >Tricresyl phosphate (TCP)>sulphurized olefin(SO)> boroning oleic acid glyceride(BOG)>chlorinated paraffin(CP). In addition, the surface topography and element distribution were analyzed by Scanning electrical microscope(SEM) and Energy dispersive X-ray analysis(EDS) as well. |
| Key words: Laser microprecision treatement,extreme pressure anti-wear additives,nodular cast iron |
