TY - JOUR
T1 - Wear resistance of NiCr/Cr3C2-20%WS2 coating on titanium alloy by laser cladding
AU - Wu, Shaohua
AU - Shi, Gaolian
AU - Lu, Xiaolong
AU - Liu, Xiubo
N1 - Publisher Copyright:
© 2016, Editorial Office of "Jinshu Rechuli". All right reserved.
PY - 2016/6/25
Y1 - 2016/6/25
N2 - To enhance the wear resistance of Ti6Al4V titanium alloy, and based on NiCr/Cr3C2-20%WS2 composite powders, self-lubricating anti-wear composite coating on titanium alloy was in-situ synthesized by laser cladding. Phase composition, microstructure, microhardness, tribological properties and counter-ball morphologies of the coating were investigated systematically. The results indicate that compared with laser claded NiCr/Cr3C2 composite coating (microhardness is 1167 HV0.5), the microhardness of the laser claded NiCr/Cr3C2-20%WS2 composite coating added 20% WS2 (1076 HV0.5) decreases slightly, however, the anti-wear and friction reduction properties of the coating improves greatly owing to self-lubricating precipitates Ti2SC and CrS. Meanwhile, wear surface of Si3N4 counter-ball is smooth and without obvious plastic deformation, which presents excellent self-lubricating anti-wear properties of the laser claded NiCr/Cr3C2-20%WS2 composite coating.
AB - To enhance the wear resistance of Ti6Al4V titanium alloy, and based on NiCr/Cr3C2-20%WS2 composite powders, self-lubricating anti-wear composite coating on titanium alloy was in-situ synthesized by laser cladding. Phase composition, microstructure, microhardness, tribological properties and counter-ball morphologies of the coating were investigated systematically. The results indicate that compared with laser claded NiCr/Cr3C2 composite coating (microhardness is 1167 HV0.5), the microhardness of the laser claded NiCr/Cr3C2-20%WS2 composite coating added 20% WS2 (1076 HV0.5) decreases slightly, however, the anti-wear and friction reduction properties of the coating improves greatly owing to self-lubricating precipitates Ti2SC and CrS. Meanwhile, wear surface of Si3N4 counter-ball is smooth and without obvious plastic deformation, which presents excellent self-lubricating anti-wear properties of the laser claded NiCr/Cr3C2-20%WS2 composite coating.
KW - Anti-wear composite coating
KW - Laser cladding
KW - Solid lubrication
KW - Titanium alloy
UR - http://www.scopus.com/inward/record.url?scp=84976902717&partnerID=8YFLogxK
U2 - 10.13251/j.issn.0254-6051.2016.06.018
DO - 10.13251/j.issn.0254-6051.2016.06.018
M3 - Article
AN - SCOPUS:84976902717
SN - 0254-6051
VL - 41
SP - 79
EP - 84
JO - Jinshu Rechuli/Heat Treatment of Metals
JF - Jinshu Rechuli/Heat Treatment of Metals
IS - 6
ER -