| 摘要 |
FIELD: metallurgy. ^ SUBSTANCE: method involves introduction of inhibitor to corrosive medium contacting with steel surface in concentration of 0.25-5.0 mg/l; at that, as inhibitor there used is ammonium salt of O,O-dialkylthiophosphoric acid of formula (RO)2P(S)SHA, where at R=i-C8H17O A=(C2H5)3N, at R=i-C4H90 A=(CH3)2NC12-14H25-29, at R=C12-14H25-29O A=(C2H5)3N, at R=i-C8H17O A=(CH3)2NC12-14H25-29, at R=i-C4H9O A=C12H25N2H2, or mixture in ratio of 3:1 of ammonium salts of O,O-dialkylthiophosphoric acids: (i-C4H9O)2P(S)SHC12H25NH2 and (i-C8H17O)2P(S)SHC12H25NH2. ^ EFFECT: method allows obtaining protective effect at using low concentrations of inhibitor and increasing inhibition efficiency in wide temperature range. ^ 3 cl, 2 tbl, 3 ex |
