本文目的在於探討雷射鏟花油袋幾何特徵在缺油潤滑中對硬軌磨潤性能之影響，以奈秒雷射於低碳鋼試片表面加工不同幾何特徵的油袋，並使用迴轉式磨耗試驗機，將低碳鋼試片與黃銅試片，在滑動速度(0.42 m/s)、外視壓力(5.21MPa)、面接觸和缺油潤滑(0.3 ml)的條件下進行磨擦試驗，模擬硬軌運動情形，並透過掃描電子式顯微鏡、能量散步光譜儀等分析儀器觀察其磨耗機制，藉此評估不同油袋幾何特徵對於硬軌磨潤性能之影響。
研究結果顯示當表面皆具有油袋時，在滑動過程中，滑動面會因物理吸附效應，而將油袋中之潤滑油帶入摩擦區，以減緩失油潤滑的現象，使整個滑動過程中，兩接觸表面保有一定的潤滑液，維持平穩的摩擦係數。
其中當油袋出口端深度h1為0μm、油袋底部傾角為0.16°時，物理楔面之漸縮區指向滑動方向時，能產生明顯微液動壓之效應，進而降低摩擦係數，提升磨潤性能。

This study aims to investigate the effect of the geometric characteristics of the oil pockets scraped by laser under starved lubrication on the tribological performance. The different surface patterns on the low carbon steel were fabricated by nano-second pulsed laser. The frictional test were conducted using a rotating type tribometer. The friction behaviors were investigated by against copper under starved lubrication condition with nominal contact pressure of 5.21MPa and sliding speed of 0.42 m/s. The machine tool slideway oil (SHELL Tonna S2 M 32) was used as lubricant.
The experiment results showed that the sliding surface will bring the lubricant from the oil pocket into the friction zone by the physical adsorption effect, resulting in maintaining a stable friction performance.
The experiment results indicated that the surface pattern with physical wedge (the outlet depth of 0 μm and the inclination angle of the bottom of 0.16° ) could enhance micro hydrodynamic effect during sliding contact, resulting in decreased the friction coefficient.

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