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Lubricants 2017, 5(3), 22; doi:10.3390/lubricants5030022

Tribological Investigation of Layered Zirconium Phosphate in Anhydrous Calcium Grease

College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
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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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Abstract

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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MDPI and ACS Style

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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