Accession Number : ADD008556

Title :   Protective Coating.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Manty,Brian A ; Anderson,Vernon G

Report Date : 29 Dec 1980

Pagination or Media Count : 22

Abstract : Method and protective coating composition for preventing or minimizing combustion or melting of titanium and combustible alloys thereof. Two layers of coatings are applied, the first layer preventing diffusion of the second layer into the titanium or alloy even at elevated temperature, and the second layer suppressing titanium combustion. The first layer contains chromium, molybdenum, niobium, tantalum, vanadium, zirconium, platinum, or rhodium or a combination thereof or alloy of any of these metals. The second layer contains copper, aluminum, gold, nickel, silver, cobalt or a combination thereof or alloy of any of these metals. By preventing diffusion of the second layer into the substrate, the first layer prevents degradation of substrate engineering or mechanical properties. When in an operating aircraft engine molten or burning titanium or other material arrives at the surface of the second layer, the second layer melts directly underneath the molten material which then is moved downstream by the engine airflow, leaving behind a non-melted substrate. (Author)

Descriptors :   *Patent applications, *Metal coatings, *Titanium, Combustion, Thermal resistance, Titanium alloys, Substrates, Layers, Construction materials, Aircraft engines

Subject Categories : Coatings, Colorants and Finishes
      Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE