Microstructure and tribological behaviors of MoN-Cu nanocomposite coatings sliding against Si3N4 ball under dry and oil-lubricated conditions

Functionalised h‐BN as an effective lubricant additive in PAO oil for MoN coating sliding against Si3N4 ball

“…Deionised water (99.9999%) was prepared in our laboratory. The MoN coating with around 3.0 μm thickness was deposited on 304 stainless steel (AISI 40300) substrates by DC magnetron sputtering according to our previous work 23 . The 304 stainless steel substrates with hardness of 210 HV were polished to a roughness less than 20 nm before deposition.…”

“…The 304 stainless steel substrates with hardness of 210 HV were polished to a roughness less than 20 nm before deposition. The deposited MoN coating on steel substrate using direct current magnetron sputtering had a hardness of 14.71 GPa and a surface roughness of 20 nm 23 …”

“…The Si 3 N 4 ceramic ball with a diameter of 6.0 mm and the disc of MoN coating deposited on 304 stainless steel substrate were used as friction pairs. The properties of the prepared MoN coating on steel substrate are presented in Table 1 23 . Prior to tribo‐test, the friction pairs comprising the ball and disc were cleaned by sonication with absolute ethanol.…”

“…The deposited MoN coating on steel substrate using direct current magnetron sputtering had a hardness of 14.71 GPa and a surface roughness of 20 nm. 23…”

“…The properties of the prepared MoN coating on steel substrate are presented in Table 1. 23 Prior to tribo-test, the friction pairs comprising the ball and disc were cleaned by sonication with absolute ethanol. All tribo-tests were performed at a load of 10N and rotating speed of 200 rpm for 3 hours unless otherwise noted.…”