Study on Controllable Tribological Behaviors of Self-Lubricating Laminated Composites

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Study on Controllable Tribological Behaviors of Self-Lubricating Laminated Composites

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- Study on Controllable Tribological Behaviors of Self-Lubricating Laminated Composites
- Vol. 46, Issue 11, Pages: 53-57(2012)
- 作者机构：
  
  西安交通大学润滑理论及轴承研究所,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TH117.1
- Online First：10 November 2012，
  
  Published：2012
- 稿件说明：
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Study on Controllable Tribological Behaviors of Self-Lubricating Laminated Composites[J]. 2012, 46(11): 53-57.
DOI：

Study on Controllable Tribological Behaviors of Self-Lubricating Laminated Composites[J]. 2012, 46(11): 53-57. DOI：

摘要

以硅钢叠片为强性层

以含MoS

、石墨和环氧树脂构成的复合自润滑材料为塑性层

采用叠装-粘接工艺制备了强性层-塑性层相间的叠层复合材料.通过控制叠片数量

得到了塑性层含量可调的叠层复合材料.采用球-盘摩擦实验机对叠层复合材料的干摩擦性能进行了评价

结果表明:与无塑性层的叠层复合材料相比

含塑性层的叠层复合材料的摩擦学性能得到了明显改善.在载荷为6 N、往复频率为4 Hz的条件下

塑性层的面积比为40%的叠层复合材料的摩擦系数为0.15

磨损率为3.8×10

-7

/(N·m)

比无塑性层的叠层复合材料分别降低了76.7% 和96%.由磨痕表面的能谱分析发现

叠层复合材料的强性层表面含有C、S、Mo等元素

而在塑性层表面含有Fe、Si等元素

表明在摩擦热作用下塑性层的润滑剂渗出

并转移到摩擦表面形成转移膜

同时塑性层具有嵌藏金属磨屑的能力.在强性层与塑性层的协同作用下

叠层复合材料具有优异的耐磨减摩性能.

Abstract

Laminated composites reinforced with strong layers and plastic layers are prepared with lamination-bonding process. The strong layer is composed of silicon steel

and the plastic layer is composed of self-lubricating polymer composites fabricated with epoxy resin

MoS

and graphite powders. Dry tribological behaviors of the laminated composites are evaluated by a pin-on-disc tester. The results indicate that the laminated composites are endowed with remarkably low friction and wear

which have a low coefficient of friction of 0.15 and a low wear rate of 3.8×10

-7

/(N·m)

in the case of 40% filling ratio. C

S and Mo are found in the strong layers at wear scars. Fe and Si are examined in the plastic laye

rs with energy dispersive spectroscopy. It is revealed that the self-lubricating ingredients permeate and transfer to the contact interface under rubbing heat and the plastic layer has trapped metal wear debris. The laminated composites show good wear resistance and anti-friction performances due to the synergistic effect of strong layer and the plastic layer.

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references

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