Abstract

Tribological tests of a hybrid composite (Al–12Si)–40Sn prepared by sintering mixtures of powders of silumin and pure tin were carried out using the pin-on-disk scheme. It has been established that an increase in the sliding velocity decreases the wear intensity of the composite upon dry friction, while an increase of the load leads to the opposite result. The data obtained indicate that the main contribution to the wear of the composite comes from the delamination of strongly deformed subsurface layers of the material. With an increase in the sliding velocity, the mechanism of the wear does not change, but, because of the heat-induced softening of the material, wear particles of the steel counterbody are pressed into it that “plate” the surface of the sample and reduce its wear intensity.

中文翻译：

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滑动速度对干摩擦条件下烧结杂化复合材料（Al-12Si）-40Sn磨损强度的影响

摘要

使用针盘法对通过混合烧结硅铝粉和纯锡粉末的混合物制备的混合复合材料（Al-12Si）-40Sn进行了摩擦学测试。已经确定的是，滑动速度的增加降低了干摩擦时复合材料的磨损强度，而载荷的增加导致相反的结果。获得的数据表明，对复合材料磨损的主要贡献来自材料的强烈变形的表面层的分层。随着滑动速度的增加，磨损的机理不会改变，但是由于材料的热诱导软化，将钢制配体的磨损颗粒压入其中，从而“覆盖”了样品的表面并降低其磨损强度。