Abstract
AbstractLanthanum isooctoxyborate (LaIOB) was prepared as an additive, and the antiwear and friction‐reducing properties of base oil containing the compound were evaluated with an MS‐800A four‐ball friction tester and HQ‐1 friction machine. The chemical states of tribochemical species on the rubbing surfaces were determined by X‐ray photoelectron spectroscopy (XPS). The results indicate that LaIOB possesses good antiwear and friction‐reducing properties. The XPS analysis shows that LaIOB can be triboreduced to La2O3 and B2O3 during friction.
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