Direct-on enamels with reduces content of cobalt oxide

The effect of oxides of variable valence on the adhesion strength and elasticity of soilless fluorine-free coatings has been studied. The possibility of reducing the content of cobalt oxide in the composition of enamels due to the introduction of oxides of variable valence (NiO, CuO, MnO ₂ ) in the optimal ratio without deteriorating the technological and operational properties of glass enamel coatings has been established. Tab. 1, ill. 2, bibliography: 5 titles.