| 摘要 |
FIELD: chemistry.SUBSTANCE: solution for metal surface phosphating contains, g/l: Zn4.55-8.0, PO7.8-14.0, NO?9.1-16.0, Mn1.17-2.8, Ni0.07-0.2, F0.52-0.8, carboxylic acid 0.19-0.3, water - the remaining part, with ratio of Mnions to Znions constituting (0.257-0.615):(1.0-1.758). As carboxylic acid solution contains dioxysuccinic, oxalic or citric acid.EFFECT: invention makes it possible to obtain finely crystalline phosphate film with optimal weight of phosphate coating at temperature of phosphating 55-70 degrees, and provides obtaining of coatings with high protective and wear-resistant properties.2 cl, 2 tbl |
