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remove SiO2 layer which occurs naturally on the Si3N4 powders

remove SiO2 layer which occurs naturally on the Si3N4 powders

remove SiO2 layer which occurs naturally on the Si3N4 powders

(OP)
Hi,

I want to remove SiO2 layer which occurs naturally on the Si3N4 powders. But I do not want to use HF because it is not safe. Is it possible to remove SiO2 by using any other acids/bases?
Any information is appreciated. Thanks for all.

RE: remove SiO2 layer which occurs naturally on the Si3N4 powders

As far as I can remember, HF is pretty much it for liquid etchants.  Plasma etching might be another avenue.

TTFN

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