Dissolving Ceramic With Acid

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.

Dissolving ceramic with acid.

Examples include the commonly used pharmaceutical antidepressant medication fluoxetine prozac and the material ptfe teflon. There are many types of ceramics. The time depended on the. Porcelain one of the stronger ceramics won t really react with any acid except hf hydrofluoric acid as you see in breaking bad.

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. Stronger acids such as fluoroantimonic acid might be able to dissolv. So we mostly used a mixture of phosphoric acid 6 wt and chromic acid 1 8 wt at 50 o c. From my experience we needed to dissolve etched alumina on top of aluminum.

Ceramic core materials are selectively dissolved from light metal e g. 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. A liquid free flowing flux which can dissolve the ceramic is only one part of a successful smelt albeit a big part. Elemental fluorine is produced from it.

It is commonly used to etch glass and silicon.