采用强流脉冲电子束表面改性技术对TiAlN涂层刀具表面进行轰击处理.利用扫描电镜、X射线衍射仪研究轰击次数对TiAlN涂层刀具表面形貌、涂层厚度及物相组成的影响,检测TiAlN涂层的显微硬度和粗糙度,并对轰击前后涂层刀具的切削性能进行分析.结果表明:随着轰击次数的增加,涂层的厚度减小,涂层表面在微区范围内更致密、光滑,显微硬度则先小幅提高后急剧下降,而涂层的物相组成基本保持不变.与原始刀具的切削性能相比,轰击后的涂层刀具切削速率小幅提高,而刀具后刀面磨损有所下降.
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