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首页> 外文会议>Society for Machinery Failure Prevention Technology Meeting; 20050418-21; Virginia Beach,VA(US) >FEASIBILITY OF ANODIC COATINGS ON AL_2O_3 FIBER REINFORCED ALUMINUM METAL MATRIX COMPOSITES FOR WEAR AND CORROSION RESISTANCE
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FEASIBILITY OF ANODIC COATINGS ON AL_2O_3 FIBER REINFORCED ALUMINUM METAL MATRIX COMPOSITES FOR WEAR AND CORROSION RESISTANCE

机译：在Al_2O_3纤维增强的铝金属基复合材料上进行阳极涂层的耐磨性和耐蚀性

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摘要

Aluminum and its alloys exposed to air are protected by a native oxide film that is heterogeneous in nature and does not provide adequate corrosion resistance. For this reason, anodized coatings are often used for corrosion as well as wear protection on aluminum alloys. While there is a wealth of information available about the effectiveness of anodized coatings on aluminum and aluminum alloys, little can be found about the coatings effectiveness on aluminum matrix composites. Metal matrix composites (MMC) in general, offer new challenges in corrosion protection. Depending on the fiber material, galvanic reactions can occur at the fiber/matrix interface that could accelerate the corrosion process. Fiber "pull-out" can also affect the surface by leaving behind crevices that can also lead to preferential corrosion sites. The object of this study is to investigate the effectiveness of a type III anodic hardcoat on a 3M NEXTEL (Al_2O_3) fiber reinforced aluminum matrix composite. The corrosion and wear properties will be presented and compared with an anodized monolithic baseline.
机译：铝及其暴露于空气中的合金受到天然氧化膜的保护，该氧化膜本质上是异质的，不能提供足够的耐腐蚀性。因此，阳极氧化涂层通常用于铝合金的腐蚀和磨损保护。尽管有大量关于铝和铝合金上阳极氧化涂层有效性的信息，但是关于铝基复合材料涂层有效性的信息却很少。通常，金属基复合材料（MMC）在防腐方面提出了新的挑战。根据纤维材料的不同，在纤维/基体界面会发生电反应，这会加速腐蚀过程。纤维的“拉出”也会通过留下缝隙而影响表面，这也会导致优先腐蚀部位。本研究的目的是研究3M NEXTEL（Al_2O_3）纤维增强铝基复合材料上III型阳极硬涂层的有效性。将显示腐蚀和磨损性能，并将其与阳极氧化的整体基线进行比较。

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