“…Phosphatizing of non-ferrous metals, in particular brass, is used less frequently than phosphatization of ferrous metals. However, in the case of applying paint coatings, the preliminary application of a phosphate layer leads to a significant increase in the resistance of the applied coating, which is very important for non-ferrous metals with low adhesive properties [8][9][10][11][12][13][14][15][16][17][18][19][20].…”