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首页> 外文会议>29th Leeds-Lyon Symposium on Tribology Sep 3-6, 2002 University of Leeds, UK >Wear particles produced in repeated contact of two asperities
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Wear particles produced in repeated contact of two asperities

机译：两次粗糙接触时产生的磨损颗粒

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摘要

Wear particles produced in repeated contact of aluminium with two pyramidal asperities are studied with image analysis. Four types of wear particles which reflect four different wear mechanisms can be identified with morphological parameters. Type 1 wear occurs only in two-asperity contact, and the particles had thin fibrous shape. Type 2 wear particles are small fragments produced at side ridges. Type 3 wear particles are from a wedge formed in front of the contact, and are of relatively thick, bulky shape. Type 4 wear is cutting caused by asperities with smaller tip angles, yielding chips of characteristic shapes. The criterion of identification based on the-morphological parameters is applied to wear particles produced in a conventional ball-on-disk test, in which most particles are identified as Types 2 and 3 though Type 1 particles also exist. It is suggested that several additional processes, including stacking of loose particles within small gaps between sliding surfaces and adhesion of the particles on the surfaces, work to make wear more complex than those with two asperities.
机译：通过图像分析研究了铝与两个金字塔形粗糙体重复接触产生的磨损颗粒。可以用形态学参数识别出反映四种不同磨损机理的四种磨损颗粒。 1型磨损仅发生在两次粗糙接触中，并且颗粒呈细纤维状。 2型磨损颗粒是在侧脊处产生的小碎片。 3型磨损颗粒来自触点前面形成的楔形，并且形状相对较厚，体积大。 4型磨损是由具有较小尖端角度的粗糙面引起的切削，从而产生了具有特征形状的切屑。基于形态学参数的识别标准适用于常规圆盘试验中产生的磨损颗粒，其中大多数颗粒被识别为2型和3型，尽管也存在1型颗粒。提出了一些额外的方法，包括将松散的颗粒堆积在滑动表面之间的小间隙内以及颗粒在表面上的粘附，这些方法会使磨损变得比具有两个粗糙表面的磨损更为复杂。

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