Structure and Corrosion Resistance of Ti-Ta-Nb Coatings Obtained by Electron Beam Cladding in the Air-Atmosphere

• DOI: 10.4028/www.scientific.net/amm.682.100
• Publication Date: 2014-10-27T09:35:30Z
• Authors: A.A. Ruktuev; V.V. Samoylenko; M.G. Golkovski
• Keywords: Cladding (metalworking)

The results of structural investigations, mechanical properties and corrosion resistance testing materials produced by the electron beam cladding tantalum niobium powders on cp-titanium substrates are presented in this paper. treatment resulted formation remelted alloyed layers ~2 mm thickness. Any voids or cracks were not observed coatings. Dendritic segregation elements during process occurred, however microstructure was represented fine laminar-type crystals. X-ray diffraction analysis showed presence α’-, α”- β-phases. Formation such structure is explained a high crystallization rate. Microhardness cladded equal to ~ 350 HV while base material hardness level 170 HV. estimated based sample mass loss. A concentrated solution (68%) HNO 3 at boiling temperature used as medium. It found that alloying titanium with 16 wt. % Ta 5 Nb decreased rate factor 24 against adding 96.