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Surface modification of titanium alloy with the Ti 3 Al + TiB 2 /TiN composite coatings
Author(s) -
Li J. N.,
Chen C. Z.,
Cui B. B.,
Squartini T.
Publication year - 2011
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.3809
Subject(s) - tin , materials science , alloy , metallurgy , composite number , indentation hardness , coating , titanium alloy , substrate (aquarium) , titanium , microstructure , composite material , oceanography , geology
Laser cladding of the Ti 3 Al + TiB 2 pre‐placed alloy powder on the Ti–6Al–4 V alloy in nitrogen protective atmosphere can form the Ti 3 Al + TiB 2 /TiN composite coating, which can dramatically improve the wear resistance of the Ti–6Al–4 V alloy surface. In this study, the Ti 3 Al + TiB 2 /TiN composite coatings on the Ti–6Al–4 V alloy have been researched by means of X‐ray diffraction, SEM and energy dispersive spectrometry. It was found that there is a metallurgical combination between the Ti 3 Al + TiB 2 /TiN composite coating and the substrate. The microhardness of the Ti 3 Al + TiB 2 /TiN composite coatings were 3 ~ 4 times higher than that of the Ti–6Al–4 V alloy because of the actions of the Ti 3 Al + TiB 2 /TiN hard phases and the grain refinement strengthening. Moreover, the wear mass losses of the Ti 3 Al + TiB 2 /TiN composite coatings were much lower than that of the substrate. Copyright © 2011 John Wiley & Sons, Ltd.