TITANIUM ALLOY SURFACE PHOSPHATIZATION METHOD Russian patent published in 2007 - IPC C23C22/36 

FIELD: metal surface chemical treatment.

SUBSTANCE: invention relates to chemical treatment of titanium alloy surfaces and can be used in aircraft, spatial, and automotive industries, in ship building and other industrial fields. Method comprises degreasing, water rinsing, and phosphatization of titanium alloy surface with composition containing, g/L: PO₄ ^-3 4.0-75.0, Zn⁺² 3.0-16.0, SO₄ ^-2 2.0-7.0, NO₃ ^-1 _{41.0-206.0, F^-1 1.0-3.5, (C4H4O6)^-2 1.8-9.0, and ultrafine polytetrafluoroethylene 800-1000.}

EFFECT: increased adhesiveness of vertical surfaces of titanium alloys under lacquer coatings and enabled restoration of decorative coating when performing repair of articles under field conditions with no contact with other metals within a structure.

3 cl, 1 tbl