PROTECTIVE TECHNICAL COATING FOR STEEL AND ALLOYS Russian patent published in 2009 - IPC C03C8/02 

FIELD: chemistry.

SUBSTANCE: present invention pertains to corrosion protective coatings during process heating when making high-quality components and intermediate products from steel and alloys. The coating contains the following, in wt %: Al₂O₃ - 17-33; CaO - 0.5-7,8; MgO - 0.5-5; 2CaOSiO₂ - 0.5-1; 3CaO·Al₂O₃ - 0.5-1; 2MgO·Al₂O₃·5SiO₂ - 5-10; CaO·6Al₂O₃ - 5-10; SiO₂ - constitutes the rest.

EFFECT: increased temperature stability and thermal insulation properties of the protective coatings for steel and alloys when heated to 1200°C.

4 ex, 2 tbl