|Description:||Decomposition of Barium Carbonate|
NotesThe mechanisms of decomposition for BaCO3, CaCO3 and SrCO3 are similar (although of course not at the same temperature; calcium carbonate, for example, is much lower than this). Decomposition of this material can be a concern (relating to glaze defects, for example) if the powder is used in ceramic clay bodies and contains granular +200 mesh material. This temperature is from Thermal Decomposition of Ionic Solids by Andrew K. Galwey, Michael E. Brown
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Barium Carbonate - BaCO3
Barium Carb, Witherite
A wide range of carbonates are used in ceramics and each of these has its own thermal history. Within that is a range where they decompose to give off...
Ceramic bodies and glazes contain materials that release carbon as they decompose on heating. Clays, gums, plasticizers are examples. These can still be burning out at higher temperatures than most people realize (cone 04 or higher). That burning generates gases, if glazes are beginning to melt befo...
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