The extreme pressure and lubricating behaviors of potassium borate nanoparticles as additive in PAO. (17th November 2019)

• Record Type: Journal Article
• Authors: Li, Yi; Zhang, Songwei; Ding, Qi; Tang, Jinzhu; Qin, Baofeng; Hu, Litian
• Is Part Of: Particulate science and technology. Volume 37:Number 8(2019)
• Page Start: 932
• Page End: 942
• Publication Date: 2019-11-17
• Subjects: Boundary protecting films -- extreme pressure capacity -- lubricating additives -- potassium borate nanoparticles -- tribological properties; Particles -- Periodicals; 620.43
• DOI: 10.1080/02726351.2018.1458353
• Languages: English
• ISSNs: 0272-6351

Abstract

ABSTRACT: The potassium borate nanoparticles (nPB) as lubricant additive were prepared with an eco-friendly method. The tribological properties of nPB and ZDDP as lubricant additives in polyalphaolefin (PAO) were systematically evaluated using a four-ball tribometer and a SRV fretting friction and wear tester, which suggested that nPB exhibited excellent extreme pressure capacity, and better anti-wear and friction-reducing properties than ZDDP. Results of surface analyses show that the good lubricating properties and excellent load-carrying capacity of nPB in PAO are ascribed to the boundary protecting films, which were composed of some easy-shearing compounds: B2 O3, Fex By and Fe2 O3 .