Dissolving Ceramic With Acid

Aluminium or light alloy e g.

Dissolving ceramic with acid.

A liquid free flowing flux which can dissolve the ceramic is only one part of a successful smelt albeit a big part. Molten naoh for more multiple material and for more precise stuff i use either 70 hf or the same with adding sulfuric acid and the more cruel and devastating way being molten oxone there are some disadvantages of the last. The time depended on the. It is commonly used to etch glass and silicon.

I am a student and the sandblaster is currently being repaired so i am looking for a solution to this. Ceramic core materials are selectively dissolved from light metal e g. From my experience we needed to dissolve etched alumina on top of aluminum. Aluminium alloy castings which are themselves susceptible to attack by caustic alkali solutions by providing the core material with a substance containing hydrogen donor group which is capable of producing nascent hydrogen and contacting the core with fused anhydrous caustic alkalis.

Stronger acids such as fluoroantimonic acid might be able to dissolv. There are many types of ceramics. Elemental fluorine is produced from it. Hydrofluoric acid is a solution of hydrogen fluoride hf in water solutions of hf are colourless acidic and highly corrosive it is used to make most fluorine containing compounds.

So we mostly used a mixture of phosphoric acid 6 wt and chromic acid 1 8 wt at 50 o c.