Synthesis and wear behavior of oleic acid capped calcium borate/graphene oxide composites. (October 2015)

• Record Type: Journal Article
• Authors: Jia, Zhengfeng; Pang, Xianjuan; Li, Huaiyong; Ni, Junjie; Shao, Xin
• Is Part Of: Tribology international. Volume 90(2015)
• Page Start: 240
• Page End: 247
• Publication Date: 2015-10
• Subjects: Calcium borate/graphene oxide composites -- Wear -- TEM; Tribology -- Periodicals; 621.89
• DOI: 10.1016/j.triboint.2015.04.041
• Languages: English
• ISSNs: 0301-679X

Abstract

Abstract: In this paper, a series of calcium borate/graphene oxide (CB/GO) composites were synthesized using borax, calcium nitrate and graphene oxide by hydrothermal method. The composites were characterized by means of Fourier transform-infrared spectroscopy (FT-IR), Raman, transmission electron microscopy (TEM), field-emission scanning electron microscopy (FE-SEM), thermogravimetric analysis (TGA) and X-ray diffraction (XRD). The friction and wear properties of oleic acid (OA) modified CB/GO composites were also investigated using four-ball wear tester. Our results showed that the friction and wear properties were improved by forming an interfacial boundary lubrication layer. Graphical abstract: Raman pattern of CB/GO0, CB/GO1 and CB/GO2 composite. Highlights: Calcium borate/graphene oxide (CB/GO) composites were synthesized by hydrothermal method. The leaf-like calcium borates were surrounded by GO nano-sheets, and the calcium borate impaled the GO nano-sheets. GO nano-sheets and calcium borates were connected by hydrogen bonding, covalent bond and other intermolecular force. The composites possess excellent tribological properties.