Produced synthesis steklomatrits to make white glass-ceramic enamel coatings for steel products with various color shades in the system R2O-RO-B2O3-Al2O3-SiO2-TiO2-P2O5-F- and investigated their spectrophotometric properties. We describe the basic features of different models of determining the color characteristics of the resulting coatings and choose the best for the objective of determining the parameters of color shades of white glass-ceramic enamel coatings for steel products.

Keywords: glass-ceramic enamel coating, protective coating for steel products, corrosion protection, spectrophotometric characteristics, color shades, whiteness, brightness, color models

  Laboratory technology was developed to fabricate flexible piezocomposites with ferroelectric phase - polymers having signal reception factorv • gv 5000 • 10-15 m2 / N. The values of the given coefficient were achieved by switching from a probabilistic (spontaneous) percolation to a correlated one in the process of forming material. This made the production of 0-1–3 piezocomposites, in which a part of piezophase has 0 connectivity, and the other part – 1 connectivity possible. To improve the efficiency of piezocomposite polarization before their manufacturing the surface of piezophase particles, which were obtained by the partial destruction of the porous frameworks, was treated with coupling agent, which did not only improve the polymer adhesion to piezophase, but also allowed the removal of water from the particle surface. The latter effect reduced the value of interfacial conductivity, i.e. prevented the voltage drop of the polarizing field. Matching of polymer conductivity and piezoceramic particles by determining the optimal polarization temperature was carried out as well.  

Keywords: piezocomposites, percolation, connectivity, electrophysical properties