FIELD: protective coatings. SUBSTANCE: coating has borosilicate glass of the following composition, wt. -% : SiO2 10-20; B2O3 50-70; PbO 5-15; MgO 5-10; Na2O 5-10; Al2O3 1-5. Content of all components must be at the following ratio, wt. -% : borosilicate glass 10-28; amorphous boron 4-16; boron nitride 1-6; phosphoric acid 10-20, and diluent - the rest. Use of proposed composition provides cold hardening of coating. EFFECT: decreased labour expenditure. 2 tbl
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Authors
Dates
1994-05-15—Published
1991-07-25—Filed