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    • 1. 发明申请
    • ELECTRON BEAM POLISHING OF ALUMINUM
    • 铝的电子束抛光
    • WO2013142442A1
    • 2013-09-26
    • PCT/US2013/032860
    • 2013-03-18
    • APPLE INC.
    • LANCASTER-LAROCQUE, Simon R.RAHARJO, PurwadiUEMURA, Kensuke
    • C23F4/04C23F1/20H01L21/3065
    • B23K15/0013B44C1/227C25F3/20
    • A highly polished surface on an aluminum substrate is formed using any number of machining processes. During the machining process, intermetallic compounds are typically generated at a top surface area of the aluminum substrate caused by spot heat generated between the tool edge and the cut tip of the aluminum substrate during the cutting process. The intermetallic compounds can leave surface imperfections after conventional mechanical polishing operations that render the surface of the aluminum substrate difficult to obtain a desired high glossiness due to exfoliation of the intermetallic compounds from the top surface. In order to remove the effect of the intermetallic compounds, an electron beam is applied to the surface resulting in Joule heating to melt down a top surface zone. In this way, any tooling traces and intermetallic compounds are eliminated.
    • 使用任何数量的加工工艺形成铝基板上高度抛光的表面。 在加工过程中,金属间化合物通常在铝基板的顶表面区域产生,这是由于在切割过程中工具边缘与铝基板的切割尖端之间产生的点热引起的。 金属间化合物可以在常规机械抛光操作之后留下表面缺陷,使得铝基材的表面由于顶表面的金属间化合物的剥落而难以获得期望的高光泽度。 为了去除金属间化合物的影响,电子束被施加到表面,导致焦耳加热以使顶表面区域熔化。 以这种方式,消除了任何工具痕迹和金属间化合物。