Loads carrying capacity map for the surface texture design of SiC thrust bearing sliding in water
Loads carrying capacity map for the surface texture design of SiC thrust bearing sliding in water
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DOI：
10.1016/s0301-679x(02)00145-7
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发表时间：
2003-03-01
影响因子：
6.2
通讯作者：
Aizawa, K
中科院分区：
文献类型：
--
作者：
Wang, XL;Kato, K;Aizawa, K
水润滑碳化硅具有环保、节能的特点，有望广泛应用于液压系统的滑动轴承和机械密封。本研究的目的是寻找提高水中SiC轴承承载能力的最佳表面织构。选择均匀分布在正方形阵列中的微坑作为织构图案，并通过反应离子刻蚀在其中一个接触面上形成微坑。通过模拟推力轴承工作状态的实验，研究了微凹坑对推力轴承由流体动力润滑模式向混合润滑模式转变临界载荷的影响。结果以承载能力图的形式进行总结。结果表明，微坑存在一个最佳的几何和分布范围，在该范围内，微坑的承载能力至少比未织构表面提高两倍。(C) 2002 Elsevier Science Ltd.版权所有。
Water lubricated silicon carbide is expected to be widely used for sliding bearings and mechanical seals in hydraulic systems since it is environmentally friendly and saves energy. The purpose of this study is to find the optimum surface texture to improve the load carrying capacity of SiC bearings working in water. Micro-pits, evenly distributed in a square array, were selected as the texture pattern, and formed on one of the contact surfaces by reactive ion etching. Experiments, which simulate the working condition of thrust bearings, were carried out to evaluate the effects of the micro-pits on the critical load of the transition of the lubrication mode from hydrodynamic to mixed. The results are summarized in the form of a load carrying capacity map. It was found that an optimum geometric and distributive range of micro-pits exists, where the load carrying capacity can be increased at least twice over that of an untextured surface. (C) 2002 Elsevier Science Ltd. All rights reserved.