Micro- and nanocomposite Ti-Al-N/Ni-Cr-B-Si-Fe-based protective coatings: Structure and properties

Autor: F. F. Komarov, A. P. Shipilenko, Yu. Zh. Tuleushev, T V Kirik, A. D. Pogrebnyak, V. M. Beresnev, A. A. Drobyshevskaya, S.N. Dub, M. K. Kylyshkanov
Rok vydání: 2011
Předmět:
Zdroj: Technical Physics. 56:1023-1030
ISSN: 1090-6525
1063-7842
Popis: A new type of nanocomposite Ti-Al-N/Ni-Cr-B-Si-Fe-based coatings 70–90 μm thick produced by combined magnetron sputtering and a plasma detonation technology is created and studied. Phases Ti3AlN + Ti3Al2N2 and the phases caused by the interaction of plasma with a thick Al3Ti + Ni3Ti coating are detected in the coatings. The TiAlN phase has a grain size of 18–24 nm, and other phases has a grain size of 35–90 nm. The elastic modulus of the Ti-Al-N coating is E = 342 ± 1 GPa and its average hardness is H = 20.8 ± 1.8 GPa. The corrosion rate of this coating is very low, 4.8 μg/year, which is about three orders of magnitude lower than that of stainless steel (substrate). Wear tests performed according to the cylinder-surface scheme demonstrate high wear resistance and high adhesion between the thick and thin coatings.
Databáze: OpenAIRE