Anodic oxide coating – protection of titanium alloys against hot salt corrosion

Zakharova L.V.
UDC
621.793:620.193.27
DOI
10.18577/2307-6046-2015-0-10-2-2
Article PDF (Russian) (919.09 KB)
How to cite
Zakharova L.V. Anodic oxide coating – protection of titanium alloys against hot salt corrosion // Proceedings of VIAM. 2015. No. 10. DOI: 10.18577/2307-6046-2015-0-10-2-2. URL: https://test.viam.ru/en/journal/2015/10/2
Abstract

Titanium alloys are widely applied in products of aviation engineering operating during long term in all climates including sea climate conditions, where deposition of sea salt on their surface can cause hot salt corrosion at elevated temperatures (≥250°C) accompanied with titanium surface embrittlement. Taking into account the potential danger of hot salt corrosion for high-loaded parts from titanium alloys operating in sea climate conditions at temperatures ≥250°C, the opportunity of identifying of coatings able to protect such parts from the influence of salt deposits seems to be of interest. This paper shows the possibility of protection of the surface of titanium alloys by anodic oxide coating of 10–15 μm in thickness against the impact of NaCl deposits (the main component of sea salt) at temperatures under 500°C, tensile stress and alternating loads.

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