Purpose

The purpose of this study is to investigate the effects of load and rotation speed on dry sliding of silicon nitride, including a series of tribological behaviors (friction coefficient, wear rate, temperature rise, etc.) and wear mechanism. Through the analysis of the above characteristics, the influence law of load and speed on them and the internal relationship between them are determined, and then the best comprehensive performance parameters of silicon nitride full-ceramic spherical plain bearings in dry sliding are predicted, which can provide guidance for the operation condition of silicon nitride full-ceramic spherical plain bearings in dry sliding.

Design/methodology/approach

The experimental study of different loads and rotation speeds under dry friction conditions was carried out by the using ball-disk sliding test method.

Findings

With the increase of load, the friction coefficient of silicon nitride friction pair and the wear rate of silicon nitride ball decrease continuously. With the increase of rotation speed, the friction coefficient of silicon nitride friction pair first increases and then decreases, and the wear of silicon nitride ball first increases and then decreases. With the increase of load and rotation speed, the wear mechanism eventually changes to adhesive wear.

Originality/value

Because of the low timeliness and inefficiency of bearing experiments, this work adopts a simple ball-disk model to comprehensively explore the influence rules of different conditions, which provides a theoretical basis for the subsequent practical application of silicon nitride full-ceramic spherical plain bearings.

中文翻译：

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载荷和转速对氮化硅干滑动影响的实验研究

目的

本研究的目的是研究载荷和转速对氮化硅干滑动的影响，包括一系列摩擦学行为（摩擦系数、磨损率、温升等）和磨损机制。通过对上述特性的分析，确定载荷和速度对它们的影响规律以及它们之间的内在关系，进而预测出氮化硅全瓷关节轴承干滑动的最佳综合性能参数，从而可以得出为氮化硅全陶瓷球面滑动轴承在干滑动中的运行条件提供指导。

设计/方法/方法

采用球盘滑动试验方法对干摩擦条件下不同载荷和转速的试验研究。

发现

随着载荷的增加，氮化硅摩擦副的摩擦系数和氮化硅球的磨损率不断降低。随着转速的增加，氮化硅摩擦副的摩擦系数先增大后减小，氮化硅球的磨损先增大后减小。随着载荷和转速的增加，磨损机制最终转变为粘着磨损。

原创性/价值

由于轴承实验时效性低、效率低，本工作采用简单的球盘模型，综合探讨了不同工况的影响规律，为后续氮化硅全瓷关节轴承的实际应用提供了理论依据。