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Piranha solution
Etching tanks used to perform Piranha, hydrofluoric acid or RCA clean on 4-inch wafer batches at LAAS technological facility in Toulouse, France. Etching is used in microfabrication to chemically remove layers from the surface of a wafer during manufacturing. Etching is a critically important process module in fabrication, and every wafer ...
Sodium treated PTFE will degrade with exposure to UV radiation. Immediately after sodium treatment, the PTFE surface is dark brown. The weaker the etching solution, the lighter the color change and the weaker the bond will be. [1] When exposed to UV radiation, the treated PTFE will gradually return to its original white color.
Etching powder isn't a required, but it can help you remove the old glaze more easily and completely, which may allow the new glaze to adhere better. If your chosen kit does not come with etching ...
This page was last edited on 6 August 2007, at 19:43 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike License 4.0; additional terms may ...
RCA clean - Wikipedia ... RCA clean
Surface finishing
Phosphate conversion coating