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Lubricants 2017, 5(3), 22;

Tribological Investigation of Layered Zirconium Phosphate in Anhydrous Calcium Grease

College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Authors to whom correspondence should be addressed.
Received: 9 June 2017 / Revised: 24 June 2017 / Accepted: 26 June 2017 / Published: 30 June 2017
(This article belongs to the Special Issue Lubricating Greases 2017)
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The tribological properties of α-zirconium phosphate particles as an additive in anhydrous calcium grease were studied by using an Optimol SRV-V oscillating reciprocating tester and a four-ball tester. Fortunately, α-Zr(HPO4)·H2O (α-ZrP) grease exhibits excellent properties in anti-friction and wear-resistant, load-carrying capacity, and extreme pressure properties. Scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDS) and 3D analysis show that α-ZrP particles appear to form a protective film allowing increased load capacity and operating frequency of the rubbed pairs. Meanwhile, α-ZrP particles can provide low friction coefficient and wear loss during a long-term test. View Full-Text
Keywords: solid lubricants; α-Zr(HPO4)·H2O; anhydrous calcium grease solid lubricants; α-Zr(HPO4)·H2O; anhydrous calcium grease

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Dai, Y.; Niu, W.; Zhang, X.; Xu, H.; Dong, J. Tribological Investigation of Layered Zirconium Phosphate in Anhydrous Calcium Grease. Lubricants 2017, 5, 22.

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