FIELD: metallurgy.
SUBSTANCE: method can be implemented for protection of items out of titanium alloys from oxidising in air up to 700°C and from hot salt corrosion at temperature to 550°C in aircraft, machine building, instrument making and automobile industry. The method consists in producing anode-oxide surface on items out of titanium alloys by means of electro-chemical treatment at voltage not less, than 200 V in electrolyte containing g/l: phosphoric acid 20-35, sulphuric acid 365-385, molybdenum-acid sodium 2.5-12.0, tungsten-acid sodium 3.5-16.5 and rhenium acid 2.5-12.5.
EFFECT: production of anode-acid coating consisted of TiO2 with structure of anatase protecting surface of items out of titanium alloys, including those complex alloyed, from oxidising and hot salt corrosion during their operation under raised temperature.
3 tbl, 1 ex
| Title | Year | Author | Number |
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