Shiyong Song

TL;DR: In this article, the size, morphology and phase structure of as-prepared Cu nanoparticle were analyzed by means of X-ray diffraction and transmission electron microscopy, and the tribological properties of the as-synthesized Cu nanoparticles as an additive in distilled water were investigated with a four-ball machine and the morphology and elemental composition of worn steel surfaces were examined using Xray photoelectron spectroscopy and scanning electron microscope equipped with an energy-dispersive spectrometer attachment.

TL;DR: A kind of N-containing borate ester (DEBE) with a double five-member ring structure as a lubricant additive was synthesized by using boric acid, diethanolamine and alkylphenol polyoxyethylene ether as the starting materials as mentioned in this paper.