The Experts below are selected from a list of 4992 Experts worldwide ranked by ideXlab platform
Rajneesh Tyagi - One of the best experts on this subject based on the ideXlab platform.
-
tribological properties of ptfe laser surface textured stainless steel under starved Oil Lubrication
Tribology International, 2015Co-Authors: Dangsheng Xiong, Jianliang Li, Rajneesh TyagiAbstract:Abstract Surface textures with dimples were fabricated on stainless steel surface by a Nd:YAG pulsed laser. Friction and wear behaviors were investigated by rubbing against PTFE under starved Oil Lubrication and the effect of dimple density from 2.0% to 20.9% was examined. The result shows that friction coefficient of stainless steel is reduced from 0.08 to 0.05 due to texturing, and the longevity of Oil film is prolonged by 50%. The dimple density of 7.9–8.8% appears the optimal tribological performance with the friction coefficient of 0.055 and wear rate of 5.2×10 −7 mm 3 /N m. The beneficial effect of dimples is to act as Oil reservoirs and the sink for capturing wear debris under starved Lubrication.
Peihong Cong - One of the best experts on this subject based on the ideXlab platform.
-
tribological behaviors of several polymer polymer sliding combinations under dry friction and Oil lubricated conditions
Wear, 2007Co-Authors: Tongsheng Li, Peihong CongAbstract:Abstract The friction and wear properties of polyamide 66 (PA66), polyphenylene sulfide (PPS) and polytetrafluoroethylene (PTFE) sliding against themselves under dry sliding and Oil-lubricated conditions were studied by using a pin-on-disc tribometer. The effect of applied load and sliding speed on tribological behaviors of the polymer–polymer sliding combinations under dry sliding and Oil-lubricated conditions were also investigated. The worn surfaces were examined by using Scanning Electron Microscope (SEM). Experimental results showed that friction properties of the three sliding combinations could be greatly improved by Oil Lubrication, the antiwear properties of PTFE and PPS were improved by Oil Lubrication, while that of PA66 were decreased by Oil Lubrication. Frictional heat, which would alter the physical state of polymer sliding surfaces, had significant effect on the tribological behaviors of polymer–polymer sliding combinations under dry sliding condition, while Oil Lubrication could reduce or dissipate the frictional heat. Adhesion wear was the dominant wear mechanism for dry sliding condition, while adhesion wear combined with erosion wear was the main wear mechanism for Oil-lubricated condition.
-
Tribological behaviors of several polymer–polymer sliding combinations under dry friction and Oil-lubricated conditions
Wear, 2007Co-Authors: Tongsheng Li, Peihong CongAbstract:Abstract The friction and wear properties of polyamide 66 (PA66), polyphenylene sulfide (PPS) and polytetrafluoroethylene (PTFE) sliding against themselves under dry sliding and Oil-lubricated conditions were studied by using a pin-on-disc tribometer. The effect of applied load and sliding speed on tribological behaviors of the polymer–polymer sliding combinations under dry sliding and Oil-lubricated conditions were also investigated. The worn surfaces were examined by using Scanning Electron Microscope (SEM). Experimental results showed that friction properties of the three sliding combinations could be greatly improved by Oil Lubrication, the antiwear properties of PTFE and PPS were improved by Oil Lubrication, while that of PA66 were decreased by Oil Lubrication. Frictional heat, which would alter the physical state of polymer sliding surfaces, had significant effect on the tribological behaviors of polymer–polymer sliding combinations under dry sliding condition, while Oil Lubrication could reduce or dissipate the frictional heat. Adhesion wear was the dominant wear mechanism for dry sliding condition, while adhesion wear combined with erosion wear was the main wear mechanism for Oil-lubricated condition.
Dangsheng Xiong - One of the best experts on this subject based on the ideXlab platform.
-
tribological properties of ptfe laser surface textured stainless steel under starved Oil Lubrication
Tribology International, 2015Co-Authors: Dangsheng Xiong, Jianliang Li, Rajneesh TyagiAbstract:Abstract Surface textures with dimples were fabricated on stainless steel surface by a Nd:YAG pulsed laser. Friction and wear behaviors were investigated by rubbing against PTFE under starved Oil Lubrication and the effect of dimple density from 2.0% to 20.9% was examined. The result shows that friction coefficient of stainless steel is reduced from 0.08 to 0.05 due to texturing, and the longevity of Oil film is prolonged by 50%. The dimple density of 7.9–8.8% appears the optimal tribological performance with the friction coefficient of 0.055 and wear rate of 5.2×10 −7 mm 3 /N m. The beneficial effect of dimples is to act as Oil reservoirs and the sink for capturing wear debris under starved Lubrication.
Yong Wang - One of the best experts on this subject based on the ideXlab platform.
-
Bonding and sliding wear behaviors of the plasma sprayed NiCrBSi coatings
Tribology International, 2013Co-Authors: Helong Yu, Z.t. Song, Yongming Guo, Min Wei, Hongmei Wang, Wei Zhang, Yong WangAbstract:Three NiCrBSi coatings with different hardness were deposited on 1045 steel by Atmospheric Plasma Spraying (APS). The cohesion bond strength of the coatings was characterized by scratch testing on coatings cross-sections. The tribological behaviors of the coatings, with a steel ball counterpart, were studied on a ball on disc tribotester under Oil Lubrication. The correlation between the wear behaviors and coating cohesion, as well as the wear mechanism and scratch mechanism of the coatings were discussed based on the microhardness measurement, microstructure observation, worn/scratch track surface analysis and determination of residual stress of the coatings.
Omer Van Der Biest - One of the best experts on this subject based on the ideXlab platform.
-
Fretting wear behavior of TiB2-based materials against bearing steel under water and Oil Lubrication
Wear, 2001Co-Authors: Bikramjit Basu, Jozef Vleugels, Omer Van Der BiestAbstract:Lubricated fretting tests in water and paraffin Oil were performed with a monolithic TiB2-based cermet with 16 vol.% Ni3(Al,Ti) binder, a sialon-TiB2 (60/40) composite and a ZrO2-TiB2 (70/30) composite against ball bearing grade steel. Based on the measured friction and wear data, the ranking of the investigated fretting couples was evaluated. Furthermore, the morphological investigations of the worn surfaces and transfer layers are carried out and the wear mechanisms for the investigated friction couples are elucidated. While fretting in water, experiments revealed that tribochemical reactions, coupled with mild abrasion, played a major role in the wear behavior of the studied material combinations. ZrO2-TiB2 (70/30)/steel wear couple has been found to have the highest fretting wear resistance among the different tribocouples under water Lubrication. Under Oil Lubrication, extensive cracking of the paraffin Oil at the fretting contacts, caused by tribodegradation, leads to the deposition of a carbon-rich lubricating layer, which significantly reduced friction and wear of all the investigated tribosystems. ?? 2001 Elsevier Science B.V. All rights reserved.
