Ceramic Soluble Salts

The changing from soluble to crystallization and back damages the surface of the ceramic because salt crystals are larger than liquid salt and therefore will shrink and expand the ceramic body.

Ceramic soluble salts.

The most common method of removal is by soaking the ceramic in deionized water for extended periods of time. Feb 16 2020 explore ceramic art community noticebo s board water soluble metal salt effects followed by 1601 people on pinterest. Barium carbonate can be used to precipitate the salts inside the clay matrix so they do not come to the surface on drying. Soluble salts respond to changes in humidity both high and low.

When soluble salts are present within the ceramic structure at a percentage considered threatening the conservator must remove them. This problem is common in many terra cotta materials but can also surface in others. See more ideas about metal salts ceramics ceramic sculpture. This terra cotta clay vitrifies here at 1957f cone 03.

How bad can efflorescence of soluble salts of fired ceramic surfaces be. Mark goudy and liza riddle are a couple from berkeley california who are blazing a new frontier in ceramic arts with their explorations into the applications of soluble metal salts. The water dissolves the salt and draws it out of the ceramic. If the ceramic is subjected to cycles of drying and wetting the salt compounds will crystallize and mobilize alternatively producing severe pressures on the ceramic body from within the pores ultimately.