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Study on tribological properties of inorganic fullerene-like tungsten disulfide as lubricant additive of PAO6
Received date: 2021-03-31
Online published: 2022-03-14
Inorganic fullerene-like tungsten disulfide（IF-WS2） particles were synthesized by rotating chemical vapor depo-sition,and characterized with X-ray diffractometer（XRD）,scanning electron microscope（SEM） and transmission electron microscope（TEM）.Surfactants span80 and IF-WS2 were uniformly dispersed in PAO6 oil with vigorous ultrasonic treatment. The effect of addition content,temperature and loading on the antifriction and anti-wear properties of IF-WS2/PAO6 were studied.Moreover,the dispersion and stability of IF-WS2 particles in PAO6 and the effect of IF-WS2 on the oxidation resis-tance of PAO6 were investigated.The results demonstrated that the synthesized IF-WS2 was an irregular hollow cage structure with average size of around 100~200 nm.Under the load of 392 N,optimal addition amount of IF-WS2 of 0.25%,and test temperature of 75 ℃,the average friction coefficient of IF-WS2/PAO6 decreased by 15.3%.When the test temperature was 100 ℃,the average friction coefficient decreased by about 27%,and the wear scar diameter decreased by 43.4%.Under different load and test temperature of 100 ℃,the average friction coefficient decreased firstly and then increased with the increase of load,and the wear scar diameter increased continuously.Dispersion and stability tests showed that span80 effectively improved the dispersion of IF-WS2 particles in PAO6,and the dispersion stability of 0.25% IF-WS2/PAO6 was the best after stewing for 192 h.Additionally,the oxidation stability test proved that adding IF-WS2 particles reduced the antioxidant capacity of PAO6 by 31%.
Wenting CHEN , Guangsheng LIU , Xiaorong CHEN , Zhen LI , Minli ZENG , Nannan WANG . Study on tribological properties of inorganic fullerene-like tungsten disulfide as lubricant additive of PAO6[J]. Inorganic Chemicals Industry, 2022 , 54(1) : 45 -50 . DOI: 10.19964/j.issn.1006-4990.2021-0204
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