Sodium-ion-exchangedα-zirconium phosphate(Na-α-ZrP)was synthesized by using disodium hydrogen phosphate as the sodium source,which was an efficient ion exchange way.The tribological properties of Na-α-ZrP as an add...Sodium-ion-exchangedα-zirconium phosphate(Na-α-ZrP)was synthesized by using disodium hydrogen phosphate as the sodium source,which was an efficient ion exchange way.The tribological properties of Na-α-ZrP as an additive in lithium grease were investigated by a four-ball friction tester and a SRV tester,respectively.The synergistic effect of Na-α-ZrP with ZDDP was also studied.Results indicate that Na-α-ZrP can effectively improve the antiwear and friction-reducing properties of lithium grease.Combined with ZDDP,the grease demonstrated excellent anti-wear performance,especially under high loads.The possible wear mechanism was discussed by observing the worn surface using 3D optical profiler,scanning electron microscopy(SEM),energy-dispersive spectrometry(EDS),and X-ray photoelectron spectroscopy(XPS).The simple synthetic method and superior tribological performance make the Na-α-ZrP become a potential choice for lubricant additives.展开更多
基金This work was supported by the National Natural Science Foundation of China(No.21436008,No.21978186 and No.22078218)the Natural Science Foundation of Shanxi Province(No.201901D111122).
文摘Sodium-ion-exchangedα-zirconium phosphate(Na-α-ZrP)was synthesized by using disodium hydrogen phosphate as the sodium source,which was an efficient ion exchange way.The tribological properties of Na-α-ZrP as an additive in lithium grease were investigated by a four-ball friction tester and a SRV tester,respectively.The synergistic effect of Na-α-ZrP with ZDDP was also studied.Results indicate that Na-α-ZrP can effectively improve the antiwear and friction-reducing properties of lithium grease.Combined with ZDDP,the grease demonstrated excellent anti-wear performance,especially under high loads.The possible wear mechanism was discussed by observing the worn surface using 3D optical profiler,scanning electron microscopy(SEM),energy-dispersive spectrometry(EDS),and X-ray photoelectron spectroscopy(XPS).The simple synthetic method and superior tribological performance make the Na-α-ZrP become a potential choice for lubricant additives.
