TY - JOUR
T1 - Effects of the counterface materials on the tribological characteristics of CNX coating deposited on plasma-nitrided Ti6Al4V
AU - Fu, Yong Qing
AU - Du, Hejun
PY - 2001/1/31
Y1 - 2001/1/31
N2 - Deposition of carbon nitride (CNX) films on plasma nitrided Ti6Al4V, i.e. Duplex treatment, was prepared in order to improve the tribological properties of Ti6Al4V. Pin-on-disk wear tests with different types of counterfaces, i.e. 52 100 steel balls, alumina balls and ultrahigh molecular weight polyethylene (UHMWPE) pins, were performed to evaluate the wear and friction characteristics of the duplex-treated coatings. Wear and friction tests showed that the duplex-treated coating system sliding with different counterfaces was effective in maintaining a favorable low and stable coefficient of friction and improving the wear resistance of Ti6Al4V. For the wear tests of sliding with steel balls, the transferring of materials from the steel ball was one of the main wear events. For the wear tests of the duplex-treated coating sliding with the alumina ball, the generation, compaction and graphitization of the coating debris layer (which acted as a lubricating third body) improved the friction property and wear resistance of the coating. For the wear tests of titanium substrate sliding with UHMWPE pins, severe abrasion was found on both titanium alloy and UHMWPE pin surfaces. With the application of the duplex-treated coating system on the titanium substrate, both the coefficient of friction and wear volumes of the two counterfaces were reduced significantly.
AB - Deposition of carbon nitride (CNX) films on plasma nitrided Ti6Al4V, i.e. Duplex treatment, was prepared in order to improve the tribological properties of Ti6Al4V. Pin-on-disk wear tests with different types of counterfaces, i.e. 52 100 steel balls, alumina balls and ultrahigh molecular weight polyethylene (UHMWPE) pins, were performed to evaluate the wear and friction characteristics of the duplex-treated coatings. Wear and friction tests showed that the duplex-treated coating system sliding with different counterfaces was effective in maintaining a favorable low and stable coefficient of friction and improving the wear resistance of Ti6Al4V. For the wear tests of sliding with steel balls, the transferring of materials from the steel ball was one of the main wear events. For the wear tests of the duplex-treated coating sliding with the alumina ball, the generation, compaction and graphitization of the coating debris layer (which acted as a lubricating third body) improved the friction property and wear resistance of the coating. For the wear tests of titanium substrate sliding with UHMWPE pins, severe abrasion was found on both titanium alloy and UHMWPE pin surfaces. With the application of the duplex-treated coating system on the titanium substrate, both the coefficient of friction and wear volumes of the two counterfaces were reduced significantly.
KW - Duplex treatment
KW - carbon nitride
KW - Ti6Al4V
KW - plasma nitriding
KW - tribology
U2 - 10.1016/S0921-5093(00)01372-1
DO - 10.1016/S0921-5093(00)01372-1
M3 - Article
VL - 298
SP - 16
EP - 25
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
SN - 0921-5093
IS - 1-2
ER -