摩擦学
材料科学
摩擦学
纳米颗粒
热液循环
合成油
化学工程
摩擦系数
纳米
纳米-
复合材料
纳米技术
扫描电子显微镜
基础油
工程类
作者
Gustavo Tontini,Guilherme Dalla Lana Semione,Cristian Bernardi,Roberto Binder,José Daniel Biasoli de Mello,Valderes Drago
出处
期刊:Industrial Lubrication and Tribology
[Emerald (MCB UP)]
日期:2016-09-12
卷期号:68 (6): 658-664
被引量:22
标识
DOI:10.1108/ilt-12-2015-0194
摘要
Purpose This paper aims to synthesize nanostructured flower-like molybdenum disulphide (MoS 2 ) particles and evaluate their suitability to act as additives for lubricants. Design/methodology/approach A hydrothermal method without any surfactant successfully produced 250 nm mean diameter Nanostructured flower-like MoS 2 particles. The resulting product was then solvothermally treated with absolute ethanol producing lipophilic powder particles which after being dispersed in two different lubricants were tribologicaly characterized by using a pin-on-disk tribometer geometry with reciprocal movement under immersion. Findings The influence on the stability and the coefficient of friction of the nano-oils is shown to be strongly dependent on their molecular structure. After 1 h of tribological testing, a ramified polyolester oil with 1 Wt.% of MoS 2 nanoflowers did not show decrease in its average coefficient of friction, while an additive naphthenic oil with the same concentration of nanoparticles showed a decrease of 86 per cent. Originality/value In this paper, nanostructured flower-like MoS 2 synthesized by the hydrothermal method was dispersed in lubricating oils to study its stability and tribological properties. To ensure good stability of the nano-oils, the particles were solvothermally treated with absolute ethanol to dehydrate and lipophilize them. A ramified polyolester-based nano-oil with 1 Wt.% of MoS 2 nanoflowers showed no decrease in its steady state coefficient of friction, while a naphthenic-based nano-oil with the same concentration of nanoparticles presented a remarkable 86 per cent reduction.
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