This study aims to improve the wear resistance of nickel-aluminum bronze (NAB) substrates by micro-arc oxidation (MAO). As this treatment is difficult to apply to NAB surface, cold spraying (CS) was first used to deposit aluminum with a purity of 99.5% onto the NAB substrates. The aluminum-coated substrate was then treated by MAO to convert the aluminum layer into Al2O3 coating in order to enhance the wear resistance. The tribological behavior of NAB substrates with or without the alumina coating was evaluated with a dry sliding wear test using a ball-on-flat reciprocating tester with varied testing loads ranging from 1 to 5 N. The results demonstrated that the oxide layer (Al2O3) formed on the aluminum layer enhanced the wear resistance of NAB alloy against 100Cr6 steel ball. Compared to uncoated NAB alloy, the wear resistance (inverse of wear rate) of the NAB alloy with the MAO coating was at least nine times higher than that of the uncoated NAB alloy at all testing loads.

这项研究旨在通过微弧氧化（MAO）改善镍铝青铜（NAB）基材的耐磨性。由于这种处理难以应用于NAB表面，因此首先使用冷喷涂（CS）将纯度为99.5％的铝沉积到NAB基板上。然后，通过MAO处理涂覆铝的基材，以将铝层转化为Al 2 O 3涂层，以提高耐磨性。使用干式滑动往复式测试仪在1至5 N的变化测试负载下，通过干式滑动磨损测试，评估了带有或不带有氧化铝涂层的NAB基材的摩擦学性能。结果表明，氧化物层（Al2O3）在铝层上形成的合金增强了NAB合金对100Cr6钢球的耐磨性。与未涂层的NAB合金相比，