本文目的在於探討不同濃度的磷系(P)、硫系(S)及二烷基二硫代磷酸鋅(zinc dialkyl dithiophsphates, ZDDP)添加劑對聚烷基二醇合成油(Polyalkylene glycol, PAG)與礦物油(Mineral Oil, MN)不同溫度條件之耐極壓性能，並使用軸承鋼與氧化鋯陶瓷球進行四球滑動磨耗實驗，分析不同材料之磨耗型態，藉此評估油品之磨潤性能。
試驗結果顯示在較輕負載及室溫下，PAG冷凍油與MN礦物油已經具備良好的磨潤性能，加入添加劑不一定能提升其磨潤能力，但在較高負載及高溫下，基礎油之磨潤能力降低，此時加入適當濃度的添加劑皆能有效提升耐極壓及抗磨耗能力。
陶瓷球因具有燒結結構，在極壓狀態下會發生不同於鋼材的磨耗型態，並造成大量的磨耗，而加入磷系添加劑能有效提升磨潤能力，硫系添加劑則無法發揮其效能。

This investigation studies the effect of the percentage of sulfur-based, phosphorus-based and ZDDP-based (zinc dialkyl dithiophsphates) additives mixed in PAG (polyalkylene glycol oil) and MN (mineral oil) by using AISI 52100 stabilized and ceramics (ZrO2) for four-ball wear test specimens to figure out the tribological performance in the wear test.
According to the experimental results, PAG and MN comes with good tribological performance on low load in room temperature. When load or temperature raised, the extreme pressure resistance and anti-wear resistance of PAG and MN will decline fast. In the meantime, mixing appropriate percentage of additives in PAG and MN will improve tribological performance.
Because of the structure of ZrO2 by sintering, thus atypical wear performance caused serious wear scar in the wear tests, nevertheless, mixing phosphorus additives in PAG will improve tribological performance.

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