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Measurements of Adhesion Force of Sliding materials under Engineering Conditions And Its Application

工程条件下滑动材料粘附力的测量及其应用

基本信息

批准号：
16560113
负责人：
SHIMA Masayuki
金额：
$ 1.86万
依托单位：
Tokyo University of Marine Science and Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2006
项目状态：
已结题

项目摘要

In this research, the measurements of adhesion force between several sliding materials and sharp angled diamond indenters are made under the engineering conditions, including a lubricated condition. In addition as an application of the measurements the relation between the coefficient of friction μ and the adhesion force, as well as the relation between μ and the the projected area of indentation are examined. Based on the results it is shown that the static coefficient of friction can be estimated by the indentation result. The conclusions obtained are as follows.1)The adhesive force is strongly affected by the angle of the indenter tip and grows larger at sharper indenter tips. The adhesive force is almost proportional to applied load at a constant angle of the indenter tip.2)The adhesive force is different for different counterpart materials. In particular, titanium alloy generates an adhesive force larger than that of other metals.3)The adhesive force is of the same order under lub … More ricant-free conditions and under lubrication. On the other hand, the adhesive force of the surface damaged by the fretting is lower in the presence of a lubricant.4)The generation of a larger adhesive force at sharper angles of the indenter tip is due to (a) the occurrence of a tighter adhesion by the development of more intensive plastic flows at sharper angles of the indenter tips and (b) the obstruction of the breakage of adhered material because of a smaller extent of the elastic recovery during unloading.5)The coefficient of adhesion of different materials shows a comparatively good correlation between them if adjusted by a parameter expressing the softening of material.6)The estimated coefficient of friction which is derived based on the projected area of indentation is almost equal to that obtained by the friction measurement.7)The normal pressure acting on the side of indenter is hardly affected by the coefficient of friction between them.8)The adhesive coefficient is of good correlation with the static coefficient of friction measured. Less

在本研究中，在工程条件下（包括润滑条件下）测量了几种滑动材料与尖角金刚石压头之间的粘附力。此外，作为测量的应用，还检查了摩擦系数 μ 和粘附力之间的关系，以及 μ 和压痕投影面积之间的关系。结果表明，可以通过压痕结果估算静摩擦系数。得到的结论如下：1)粘合力受压头尖端角度的影响很大，压头尖端越尖锐，粘合力越大。在压头尖端角度恒定的情况下，粘附力几乎与施加的载荷成正比。2）不同的对应材料的粘附力不同。特别是钛合金产生的附着力比其他金属大。3）无润滑条件下和润滑条件下的附着力处于同一数量级。另一方面，在存在润滑剂的情况下，被微动损坏的表面的粘附力较低。 4）在压头尖端的锐角处产生较大的粘附力是由于（a）通过在压头尖端的锐角处产生更强烈的塑性流动而发生更紧密的粘附，以及（b）由于弹性恢复程度较小而阻碍了粘附材料的破裂 5) 如果通过表示材料软化程度的参数来调节，不同材料的粘附系数之间表现出较好的相关性。 6) 根据压痕投影面积推算出的摩擦系数与摩擦测量所得的值几乎相等。 7) 作用在压头侧面的法向压力几乎不受它们之间的摩擦系数的影响。粘合系数与测得的静摩擦系数有良好的相关性。较少的