Many components experience sliding or rotating contact with other parts or with their environments. Their performance often degrades during service because their dimensions are altered by wear. Furthermore, the friction at the contact surface wastes energy. To mitigate these problems, hard coatings may be applied to contact surfaces to increase their wear resistance, and surfaces are often covered with a lubricant to reduce friction. At Ames National Laboratory, a nanocomposite boron-aluminum-magnesium ceramic alloy coating (AlMgB14 + TiB2) has been developed that provides a superhard, wear-resistant surface that also has an exceptionally low coefficient of friction. Tests show that these boride coatings offer a combination of wear resistance and low friction unmatched by other hard mate - rials (e.g., tungsten carbide, cubic boron nitride, or diamondlike carbon).
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机译：许多组件会与其他零件或其环境发生滑动或旋转接触。在使用过程中，它们的性能通常会下降，因为其尺寸会因磨损而改变。此外，接触表面上的摩擦浪费能量。为了减轻这些问题，可以在接触表面上施加硬涂层以增加其耐磨性，并且通常在表面覆盖润滑剂以减少摩擦。在埃姆斯国家实验室（Ames National Laboratory），开发了一种纳米复合硼铝镁陶瓷合金涂层（AlMgB14 + TiB2），该涂层可提供超硬，耐磨的表面，并且摩擦系数也极低。测试表明，这些硼化物涂层兼具耐磨性和低摩擦性能，是其他硬质材料（例如，碳化钨，立方氮化硼或类金刚石碳）无法比拟的。
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