Preparation and Tribological Properties of Fluorinated Boron Nitride Nanosheets Water-based Additive

被引:0
|
作者
Wang W. [1 ]
Chang W. [1 ]
Lv F. [1 ]
Xie Z. [1 ]
Yu C. [2 ]
机构
[1] Xian University of Architecture and Technology, College of Metallurgical Engineering, Xi'an
[2] Jihua Laboratory, Foshan
关键词
fluorinated boron nitride nanosheets; hexagonal boron nitride; inorganic non-metallic materials; tribological properties; water-based lubrication additives;
D O I
10.11901/1005.3093.2023.383
中图分类号
学科分类号
摘要
Hexagonal boron nitride (h-BN) is a typical layered structure material with enormous potential in the field of friction and lubrication. Fluorinated boron nitride nanosheets (F-BNNSs) were prepared by constant temperature magnetic stirring and ball mill-assisted fluorination using NH4F as fluorine sourced, while h-BN as raw material. Tribological behavior of hexagonal boron nitride nanosheets (h-BNNSs) and F-BNNSs as water-based lubricant additives were evaluated under Ti6-Al-4V(TC4)/GCr15 contact conditions. The results showed that when as water based liblicant additives, the F-BNNSs prepared with the mass ratio of h-BN to NH4F increased from 1:2 to 1:4, the resulted average coefficients of friction (COFs) varied from 0.3135 to 0.1435 to 0.2177. When the mass ratio of h-BN and NH4F was 1:3, the COFs and wear rate of F-BNNSs12 prepared were 55% and 75% lower than that of h-BNNSs, respectively. Based on the analysis of wear scars, it were found that the excellent friction reduction and anti-wear performance of F-BNNSs12 can be attributed to three aspects: The weakening polar interactions between the nanosheet layers may facilitate the relative slidding; F-BNNSs12 incommensurate nanorodnanosheet structure may cause rolling friction and good lubrication performance; F-BNNSs12 deposited on the surface of the friction pair favour forminga discontinuous lubricating film, to alleviate the direct contact for the friction pair. © 2024 Chinese Journal of Materials Research. All rights reserved.
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页码:410 / 422
页数:12
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