在鋁酸鈉電解液中藉由微弧氧化在6061鋁合金表面上形成具有高硬度的陶瓷氧化層，以改善6061鋁合金的耐磨性。但多孔隙且非常粗糙的陶瓷層表面，並不利於實際應用。本研究改變不同的電流密度來評估微弧氧化層的冶金性質、機械性質及磨潤性能，以求得最佳的電流密度。並在磨耗試驗中使用不同潤滑劑與封孔處理，用以降低對磨件之損傷，藉由不同材料及形式的對磨件進行磨耗試驗，分析不同製程參數對微弧氧化層磨潤性能的影響。
試驗結果顯示，電流密度15A/dm2條件下形成的微弧氧化陶瓷層硬度最高、耐磨耗性能最好，並以此電流密度，製作封孔處理試驗用試片。而封孔處理試片的磨耗結果顯示，三種封孔試片的膜層磨痕深度及對磨件磨耗量皆有下降，其中混合封孔比石蠟封孔與二硫化鎢封孔之效果更佳，明顯的降低微弧氧化層的磨痕深度和對磨件磨耗量，其摩擦係數甚至可降至約0.2。在線接觸狀態下(較低最大接觸應力)，無論採用軸承鋼柱或氧化鋯柱對磨件，混合封孔試片皆表現出最佳的磨潤性能。在點接觸狀態下(較高最大接觸應力)，採用軸承鋼球對磨件時，混合封孔試片表現出最佳的磨潤性能;然而採用氧化鋯球對磨件時，則是石蠟封孔試片表現出最佳的磨潤性能，這與對磨件之材料性質有關。

A ceramic coating with high hardness was made on 6061 aluminum alloy by micro-arc oxidation(MAO) in aluminate electrolyte, which improved the wear resistance of aluminum alloy. However, the surface of coating was porous and rough, which was disadvantageous for practical applications. In this work, different current densities were used to study the formation mechanism of the MAO and obtain the best ceramic coating. Different lubricants and sealing process were used in wear test to reduce the damage of the counterparts. The wear tests were carried out by using different materials and shapes of counterparts to analyze the influence of different parameters on the tribological performance of the ceramic layer.
The results showed that the MAO coating formed at 15A/dm2 shows the highest hardness and the best tribological performance, and use this current density to produce the specimen for sealing treatment. The wear test showed that the wear volume and depth of the three sealing specimens are reduced, and the mixed sealing is the best, which greatly reduces the wear volume, depth and friction coefficient that can be reduced to about 0.2. In line contact, mixed sealing coating showed excellent tribological performance by using 52100 alloy steel or zirconia counterparts. However, in point contact, the effect of the lubricant-sealing coating is gradually decreased due to high contact stress.

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