Tribofilm formation and mild wear by tribo-sintering of nanometer-sized oxide particles on rubbing steel surfaces
Tribofilm formation and mild wear by tribo-sintering of nanometer-sized oxide particles on rubbing steel surfaces
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DOI：
10.1016/j.wear.2006.03.046
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发表时间：
2007-01-04
期刊：
影响因子：
5
通讯作者：
Komai, K.
中科院分区：
文献类型：
--
作者：
Kato, H.;Komai, K.
本研究首次表明，在摩擦钢表面上提供纳米尺寸的 Fe2O3、SnO2、CuO 或 Bi2O3 氧化物颗粒会随着滑动距离诱导向轻度磨损的转变，并且磨损转变行为取决于所提供的氧化物的类型。轻微磨损是由于摩擦表面上形成了磨损保护摩擦膜，观察证实摩擦膜是由所提供的氧化物颗粒的摩擦烧结产生的。轻度磨损转变行为可以通过所提供的氧化物颗粒的烧结速率来解释，该烧结速率与氧化物中的氧扩散系数和颗粒直径有关。当所提供的氧化物具有高扩散率时，由于氧化物颗粒的高烧结速率，摩擦膜形成速率高，并且在短滑动距离处发生轻度磨损转变。对于 Fe2O3 氧化物，当提供更细的颗粒时，从严重磨损过渡到轻度磨损的滑动距离会减小，这表明细颗粒很容易在磨损表面上烧结。 (c) 2006 Elsevier B.V. 保留所有权利。
The present study is the first to show that the supply of nanometer-sized particles of Fe2O3, SnO2, CuO, or Bi2O3 oxide on rubbing steel surfaces induces transition to mild wear with sliding distance, and that the wear transition behavior depends on the type of supplied oxide. The mild wear is due to formation of the wear-protective tribofilm on the rubbing surfaces, and observations confirm that the tribofilms are produced by tribo-sintering of the supplied oxide particles. The mild wear transition behavior is explained by the sintering rate of the supplied oxide particles, which is related to the oxygen diffusion coefficient in the oxide and the particle diameter. When the supplied oxide is of high diffusivity, the tribofilm formation rate is high, owing to the high sintering rate of the oxide particles, and the mild wear transition occurs at a short sliding distance. In the case of Fe2O3 oxide, the sliding distance of the transition from severe to mild wear is decreased when finer particles are supplied, suggesting that fine particles are easily sintered on the wear surface. (c) 2006 Elsevier B.V. All rights reserved.