NaF

Notas

In the context of ceramic and glass science, sodium fluoride (NaF) acts as a specialized additive rather than a foundational glass-forming oxide. Due to its high solubility in water, it is rarely utilized in aqueous glaze slurries, as its presence can lead to significant processing complications, including the alteration of rheology and potential precipitation issues. When incorporated into a melt, the fluoride ion functions primarily as a potent flux that lowers the viscosity of the glassy matrix, thereby facilitating rapid flow and surface leveling. However, sodium fluoride is volatile at high temperatures, often resulting in off-gassing that can induce surface defects such as pitting or pinholing. Consequently, its application in ceramic systems is highly restricted and typically requires precise atmospheric control to manage the release of fluorine-bearing vapors.