PROTECTIVE COATING FOR COPPER

摘要

FIELD: industrial use of protective coating. SUBSTANCE: protective coating comprises, wt %: SiO2, 30.5-54.5; B2O3, 7.0-13.0; Na2O, 11.0-14.0; K2O, 8.0-11.0; Al2O3, 6.0-7.0; CaO, 4.0-5.0; BaO, 7.0-8.0; Fe3O4, 1.0-5.0; MnO2, 1.0-5.0; Co2O3, 0.5-1.5. EFFECT: greater strength of cohesion of coating with copper substrate and increased heat resistance thereof. 3 ex