砂纸
薄脆饼
材料科学
钻石
抛光
复合材料
变化(天文学)
工程制图
工程类
物理
光电子学
天体物理学
作者
Yi-yang Zhou,Eugene C Davis
标识
DOI:10.1016/s0921-5107(99)00423-7
摘要
Abstract In silicon wafer polishing and CMP processes, polish pad dressing (conditioning) is often used to restore pad performance. In this report, variation of polish pad shape during dressing is studied by using diamond-plated cup wheels and sandpaper rings, respectively. Result shows that pad shape becomes concave after certain amount of dressing. The concavity increases with dressing time – longer dressing produces higher concavity. Moment induced by the frictional force between pad and dressing device is proposed to explain the pad shape variation.
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