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US08398779B2 Non destructive selective deposition removal of non-metallic deposits from aluminum containing substrates 有权
从含铝基材中非金属沉积物的非破坏性选择性沉积去除

Non destructive selective deposition removal of non-metallic deposits from aluminum containing substrates
Abstract:
Non-metallic deposits are selectively removed from aluminum containing substrates such as aluminum faceplates using a selective deposition removal (SDR) solution. The SDR solution does not substantially etch the faceplate holes, thereby preserving the hole diameter integrity and increasing the number of times the faceplate may be cleaned or refurbished while remaining within processing hole diameter tolerances. In an embodiment, the SDR solution comprises, in wt % of the solution, 15.5%+/−2% HF or buffered HF acid, 3.8%+/−0.5% NH4F pH buffer, 59.7%+/−5% ethylene glycol, and the balance H2O.
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