Dissolving Ceramic With Acid

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Dissolving ceramic with acid.

Porcelain one of the stronger ceramics won t really react with any acid except hf hydrofluoric acid as you see in breaking bad. It is commonly used to etch glass and silicon. 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. I am a student and the sandblaster is currently being repaired so i am looking for a solution to this.

From my experience we needed to dissolve etched alumina on top of aluminum. So we mostly used a mixture of phosphoric acid 6 wt and chromic acid 1 8 wt at 50 o c. There are many types of ceramics. 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.

A liquid free flowing flux which can dissolve the ceramic is only one part of a successful smelt albeit a big part. The time depended on the. Elemental fluorine is produced from it. I need to dissolve ceramic shell from a bronze cast and i was wondering if there is a liquid solution available to remove the remaining shell.

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.