采用非平衡磁控溅射与多弧离子镀技术分别在SDC90模具钢表面制备CrTiAlN与TiAlN涂层,采用SEM、XRD及M200等观察与测定涂层的微观形貌与组织、承载能力及摩擦磨损性能.研究表明:CrTiAlN涂层致密、无柱状晶,AlTiN涂层存在黑色颗粒,有轻微的柱状晶,粗糙度和厚度略高于前者;涂层显著提高了模具钢的表面硬度(1 887 ～2 482 HVo.245N)及承载能力,其中CrTiAlN涂层韧性优于AlTiN涂层;强、韧表面有效降低模具钢的磨损体积与磨损率,磨损18 h后CrTiAlN与AlTiN涂层的磨损体积分别为基体的48％和28％,磨损率分别为基体的60％和28％;高硬度的AlTiN涂层显示出更好的耐磨性能;磨损机制主要为疲劳磨损.
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