| 摘要 |
FIELD: protective coatings. SUBSTANCE: aqueous solution for anticorrosive coatings containing compound Co(NH<SB>3</SB>)<SB>6</SB>X, where X is Cl, Br, NO<SB>3</SB>, CN, SCN, 1/3 PO<SB>4</SB>, ? SO<SB>4</SB>, C<SB>2</SB>H<SB>3</SB>O<SB>2</SB>, or ? CO<SB>3</SB>, is prepared by interaction of Co(II) salt with Mg(NO<SB>3</SB>)<SB>2</SB>, <EMI ID=0.309 HE=6 WI=27 TI=CHI>, NaNO<SB>3</SB>, KNO<SB>3</SB>, or LiNO<SB>3</SB>. Concentration of cobalt salt varies from 0.01 M to saturation limit and that of metal nitrate from 0.03 to 2.5 M. According to invention, ammonium acetate is added to concentration from 0.06 to 6.0 M, pH of solution ranging from 5.0 to 9.0. Aluminum substrate is exposed to solution at 20 to 72 C for 3 to 60 min in presence of hydrogen peroxide, washed, and dried. EFFECT: increased density of coating having good adhesion to substrate, and eliminated harmful sewage. 21 cl, 8 dwg
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