Entity

Time filter

Source Type

Nanning, China

Yang C.,Guizhou University | Zhou Y.,Guizhou University | Wei J.,Guangxi ZhongYan Ltd | Yang T.,Guizhou Vocational Technical Institute | Nie H.,Guizhou University
Advanced Materials Research | Year: 2013

The silane coupling agent KH550 is used to modify foamed Fe powder(FFP) surface for obtain the hydrophobic surface, which is the very important component in semi-metallic friction material. It can improve high temperature bonding force between FFP and phenolic resin, further improve friction coefficient stableness of friction material and abrasion resistance. The modification effect of FFP is characterized by IR, and the tribological properties is characterized by XD-MSM constant speed friction test machine, the surface topography is characterized by SEM. The results indicate that FFP has been bonded to silane coupling agent, and formed hydrophobic surface what has the alkyl group. The changing of friction coefficient has reduced 23%, the average wear rate has declined 28.6%,and the wear rate has declined 32% at 350°C after the friction material with modified FFP compare with the one with original FFP. And those changing are all because of the fact that the FFP modified by KH550 is difficult to peel off during the high temperature. © (2013) Trans Tech Publications, Switzerland. Source


Cao Y.,Guizhou University | Yang T.,Guizhou Vocational Technical Institute | Zhang D.,Guizhou University | Wang Q.,Guangxi ZhongYan Ltd | Guo X.,Guangxi ZhongYan Ltd
Chemical Engineering Transactions | Year: 2015

In order to obtain the tribological properties of nano-montmorillonite (MMT)/In lubricant additive on steel ball tribo-pair. 1:1 MMT/In composite nano-powders were prepared by nano-MMT and nano-In modified with coupling agent KH550, and the nano-MMT/In lubricating oil dispersion system was prepared by 150N base opl containing 3 mass fraction of nano-MMT/In composite powders, and then took the dispersion effect by laser particle size analyzer, TEM and IR. The anti-wear and friction-reducing behaviors of that lubricating oil dispersion system were observed on the MMU-10G abrasive-wear tester with 45# steel tribo-pair, the morphology and the element of the worn surfaces were analyzed by SEM and EDX. The results showed that the grain size of the modified nano-MMT/In was smaller than the one without modification, and the modified nano-MMT/In had the good dispersion in the system; compare with the one in base oil system, the average friction coefficient of sample of 45# steel tribo-pair in nano-MMT/In additive lubricating oil system had declined by 22.54 %, and the wear spot diameter had declined by 12.62 %; The surface of sample after friction had created the self-repairing film that contain the characteristic element of MMT and In, that phenomenon was caused by the interaction of nano-MMT and nano-In. Copyright © 2015, AIDIC Servizi S.r.l. Source


Cao Y.,Guizhou University | Yang T.,Guizhou Vocational Technical Institute | Zhang D.,Guizhou University | Wang Q.,Guangxi ZhongYan Ltd | Guo X.,Guangxi ZhongYan Ltd
Chemical Engineering Transactions | Year: 2015

In order to obtain the tribological properties of nano-montmorillonite (MMT)/In lubricant additive on steelbronze tribo-pair. 1:1 MMT/In composite nano-powders were prepared by nano-MMT and nano-In modified with coupling agent KH550, and the nano-MMT/In lubricating oil dispersion system was prepared by 150 N base opl containing 3 mass fraction of nano-MMT/In composite powders, and then took the dispersion effect by TEM. The anti-wear and friction-reducing behaviors of that lubricating oil dispersion system were observed on the MMU-10G abrasive-wear tester with steel-bronze tribo-pair, the morphology and the element of the worn surfaces were analyzed by SEM and EDX. The results showed that the modified nano-MMT/In had the good dispersion in the system; compare with the one in base oil system, the average friction coefficient of sample of steel-bronze tribo-pair in nano-MMT/In additive lubricating oil system had declined by 22.65 %, and the total wear mass loss had declined by 47.62 %; The surface of sample after friction had created the self-repairing film that contain the characteristic element of MMT and In, that phenomenon was caused by the interaction of nano-MMT and nano-In. Copyright © 2015, AIDIC Servizi S.r.l. Source

Discover hidden collaborations