二维纳米氮化硼对锂基润滑脂性能的影响  

Effect of Two-Dimensional Nano-Boron Nitride on Performances of Lithium-Based Lubricating Grease

作　　者：黄姚逸 何忠义 熊丽萍 Huang Yaoyi;He Zhongyi;Xiong Liping(East China Jiaotong University,Nanchang 330013,China)

机构地区：[1]华东交通大学材料科学与工程学院,南昌330013

出　　处：《合成润滑材料》2023年第2期20-23,共4页Synthetic Lubricants

摘　　要：将二维纳米氮化硼(h-BN)添加到锂基润滑脂中,就h-BN对锂基润滑脂胶体结构,热性能及摩擦学特性的影响进行了研究。当h-BN的添加量为0.030%质量分数时,对锂基润滑脂的胶体结构有一定的影响,但锂基润滑脂的最终热分解温度从300℃上升到380℃,提高了锂基润滑脂的热性能。当h-BN的添加量为0.005%质量分数时,此时锂基润滑脂的平均摩擦因数和平均磨斑直径最小,平均摩擦因数下降了15.35%。x射线光电子能谱(XPS)分析表明,h-BN在摩擦表面并没有发生摩擦化学反应,而是在摩擦表面形成了保护膜,从而起到了抗磨减摩的效果,提升了锂基润滑脂的摩擦学特性。(图9表1参考文献13)Two-dimensional nano-boron nitride(h-BN)was added to lithium-based lubricating grease,and the effect of h-BN on the colloidal structure,thermal performances and tribological characteristics of lithiumbased lubricating grease was studied.When the content of h-BN was 0.030%,it had certain influence on the colloidal structure of lithium-based lubricating grease.However,the final thermal decomposition temperature of lithium-based lubricating grease increased from 300℃to 380℃,which improved the thermal performance of lithium-based lubricating grease.When the content of h-BN was 0.005%,the average friction coefficient and average wear scare diameter of lithium-based lubricating grease were the smallest,and the average friction coefficient decreased by 15.35%.X-ray photoelectron spectroscopy(XPS)analysis showed that there was no tribochemical reaction of h-BN on the friction surface.Instead,a protective film was formed on the friction surface,which played an anti-wear and friction-reducing effect and improved the tribological characteristcs of lithium-based lubricating grease.(Charts9 Table1 References13)

关 键 词：胶体结构 热性能 摩擦学特性 

分 类 号：TE624.83[石油与天然气工程—油气加工工程]