A Novel Tribological Test Method for Micro Journal Bearing System

一種新型的微細軸頸軸承磨潤性質測試方法

林原慶(Yuan-Ching Lin) ； 蕭毅忠(Yi-Zhong Hsiau) ； 楊志堅(Jhih-Jian Yang) ； 陳俊男(Jiun-Nan Chen)

《中國機械工程學刊》 34卷4期 (2013/08) Pp. 271-276

摘要

本研究中利用粉末冶金製程製作銅基與碳化鎢基微細頸軸承，並提出一種新式頸軸承磨潤性質評估方法。磨耗試驗中，先使用雷射光束在一具有五個自由度的平台上校正磨耗試片位置，以增加實驗數據之可靠度。接續再加載輕負荷及高轉速等參數，進行乾磨耗試驗。試驗過程中，以雷射系統截取試片摩擦係數，並比較各試片之耐磨耗能力。實驗結果顯示，碳化鎢基軸承具有較佳的耐磨耗性能；然而，銅基軸承搭配鍍氮化鈦軸的試驗具較低的摩擦係數。

並列摘要

This study proposes a new test rig and a new approach to evaluate the tribological properties of micro journal bearings. Cu-based and WC-based micro bearings were fabricated by powder metallurgy (P/M) to test their tribological properties. The micro journal bearing system was tested under very light loading and high-speed dry sliding conditions to determine its coefficient of friction and wear resistance properties. In this study, an adjustable platform with five degrees of freedom associated with a system for aligning laser beams was used to adjust the tribological test rig to increase the reliability of results obtained in the test. Furthermore, a new method of measuring the friction coefficient of friction pairs by a laser system was proposed. Experiment results reveal that the WC-based microbearing had better wear resistance properties than the Cu-based microbearing, but the Cu-based microberaing with a TiN coating journal had a lower coefficient of friction.

並列關鍵字

Microbearing ； microfriction ； microfabrication