Principle of reducing burning point of ceramics by cosolvent
The flux for ceramics is mainly alkali metal, alkaline earth metal, which is more conventional can reduce the melting temperature of ceramic materials, their mechanism of action is S-O tetrahedral metal ions into SIO2, the structure is no longer completely close, free oxygen colleagues solved, there will be helps to lower the melting temperature of the glaze melt.
In addition, common fluxes are boric acid, borax and other boron oxides, and lead oxides, of course. Boron has a strong fluxing effect with lead.
They lower the melting point of the mechanism is basically the same, are S-O B-O or Pb-O tetrahedron tetrahedron itself and directly connected to the SiO2, in the process of connecting the original tetrahedral configuration changes, resulting in a decline in SiO2 stability, thereby reducing the melting temperature.
