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Forced drop swinging on vibrated and textured metal substrates 在振动和有纹理的金属基材上强迫跌落摆动
IF 1.9 4区 工程技术
Lubrication Science Pub Date : 2023-01-18 DOI: 10.1002/ls.1642
Jing Xu, Dongdong Zhou, Jing Ni, Bin Li, Jiadi Lian
{"title":"Forced drop swinging on vibrated and textured metal substrates","authors":"Jing Xu,&nbsp;Dongdong Zhou,&nbsp;Jing Ni,&nbsp;Bin Li,&nbsp;Jiadi Lian","doi":"10.1002/ls.1642","DOIUrl":"10.1002/ls.1642","url":null,"abstract":"<p>A new type of vibrated drop wettability mechanism on a micro-texture surface is proposed and investigated experimentally and theoretically. In this experiment, the mechanical testing machine is used as the vibration source, and the compound control cabinet is used to adjust the vibration liquid feeding table. By comparing the apparent dynamic contact angle, it is concluded that the surface energy of the second cycle is larger than the first one. A swing model and spring-mass system model are presented to study the vibrated drop motion pattern. The spring-mass system model is built to analyse the adhesion force working process theoretically. The drop surface energy is transmitted by vibration. With the superposition of vibration energy, the displacement of the drop gravity centre becomes larger and larger until the drop migrates. The adhesion force drives the liquid drop to do reciprocating motion, and it changes the liquid drop dynamic wettability.</p>","PeriodicalId":18114,"journal":{"name":"Lubrication Science","volume":"35 5","pages":"317-326"},"PeriodicalIF":1.9,"publicationDate":"2023-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42879368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study the reuse possibility of tempering lubricant for cold-rolled strip wet-rolling processing 冷轧带钢湿法轧制回火润滑油再利用的可能性研究
IF 1.9 4区 工程技术
Lubrication Science Pub Date : 2023-01-14 DOI: 10.1002/ls.1639
Jigang Zhao, Weimin Chen, Junjian Zeng
{"title":"Study the reuse possibility of tempering lubricant for cold-rolled strip wet-rolling processing","authors":"Jigang Zhao,&nbsp;Weimin Chen,&nbsp;Junjian Zeng","doi":"10.1002/ls.1639","DOIUrl":"10.1002/ls.1639","url":null,"abstract":"<p>In the wet rolling process of industrial cold-rolled strips, the tempering lubricant was discarded after one-time use, which resulted in huge waste and high costs for wastewater treatment. In order to explore the reuse value and feasibility of the tempering lubricant, the influences of industrial rolling were to be studied first. In the comparison of before and after-use- tempering lubricant, the surface tension decreased by 34%, and the physicochemical indicators such as electrical conductivity, pH, and total alkali value decreased by 4%–14.3%. In terms of the components and related effects, about 15% of heavy organic matter, such as fatty acids and alcohol amine was responsible for lubrication, rust prevention, and corrosion inhibition. These heavy organic solutes would reduce by 2%–6%, with impurities increasing after rolling. However, the waste tempering lubricant still had a high reuse value. Further from the influence of impurities and microorganisms, it was concluded that if the solid powders were filtered out, the bacteriostatic agent was added after 3 days, and the changes in the effective substance concentration of the tempering lubricant were mastered to replace 1/3 of it in time during recycling, then the reuse of the tempering lubricant was feasible.</p>","PeriodicalId":18114,"journal":{"name":"Lubrication Science","volume":"35 4","pages":"279-286"},"PeriodicalIF":1.9,"publicationDate":"2023-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42043485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A study on the lubrication effects of nano-TiO2 additive water-based lubricants during rolling of ferritic stainless steel strips 纳米TiO2添加剂水基润滑剂在铁素体不锈钢轧制过程中的润滑作用研究
IF 1.9 4区 工程技术
Lubrication Science Pub Date : 2023-01-13 DOI: 10.1002/ls.1640
Xiaoyu Sun, Xiaoguang Ma, Linan Ma, Cunlong Zhou, Jinghui Li, Mingya Zhang, Jingwei Zhao
{"title":"A study on the lubrication effects of nano-TiO2 additive water-based lubricants during rolling of ferritic stainless steel strips","authors":"Xiaoyu Sun,&nbsp;Xiaoguang Ma,&nbsp;Linan Ma,&nbsp;Cunlong Zhou,&nbsp;Jinghui Li,&nbsp;Mingya Zhang,&nbsp;Jingwei Zhao","doi":"10.1002/ls.1640","DOIUrl":"10.1002/ls.1640","url":null,"abstract":"<p>In the present work, a comparison between traditional oil-in-water (O/W) based lubricant and nano-TiO<sub>2</sub> additive water-based lubricants was made to explore the lubrication effects during rolling of ferritic stainless steel (FSS) strips. The results show that marked reduction in rolling force and improvement in the surface quality can be achieved by utilisation of water-based nanolubricant, which can be attributed to the synergism of rolling effect, mending effect, polishing effect and protection film. An optimal concentration of 3.0 wt% TiO<sub>2</sub> nanoparticles is found to exhibit excellent lubrication effects with sufficient nanoparticles at real contact regions without aggregation, leading to 10% reduction in the surface roughness during rolling of FSS strips.</p>","PeriodicalId":18114,"journal":{"name":"Lubrication Science","volume":"35 4","pages":"287-298"},"PeriodicalIF":1.9,"publicationDate":"2023-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49615876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The influence of model organosulfur extreme pressure additives and analogues on the corrosion of copper as measured by a wire corrosion test method 用导线腐蚀试验法测定了模型有机硫极压添加剂及其类似物对铜腐蚀的影响
IF 1.9 4区 工程技术
Lubrication Science Pub Date : 2023-01-04 DOI: 10.1002/ls.1625
Gregory J. Hunt, Michael P. Gahagan, Mitchell A. Peplow
{"title":"The influence of model organosulfur extreme pressure additives and analogues on the corrosion of copper as measured by a wire corrosion test method","authors":"Gregory J. Hunt,&nbsp;Michael P. Gahagan,&nbsp;Mitchell A. Peplow","doi":"10.1002/ls.1625","DOIUrl":"10.1002/ls.1625","url":null,"abstract":"<p>A wire corrosion test (WCT) is used to investigate the influence of model organosulfur extreme pressure additives and analogues. The corrosion response from these compounds is discussed with regards to chemical structural type. Corrosion rates were calculated using the guide in ASTM G31 to provide a measurement in mm/year.</p>","PeriodicalId":18114,"journal":{"name":"Lubrication Science","volume":"35 3","pages":"155-162"},"PeriodicalIF":1.9,"publicationDate":"2023-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ls.1625","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47233100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Issue Information 问题信息
IF 1.9 4区 工程技术
Lubrication Science Pub Date : 2023-01-01 DOI: 10.1111/ropr.12429
{"title":"Issue Information","authors":"","doi":"10.1111/ropr.12429","DOIUrl":"https://doi.org/10.1111/ropr.12429","url":null,"abstract":"","PeriodicalId":18114,"journal":{"name":"Lubrication Science","volume":"35 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41676465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced ester (MIL-PRF-23699G) gas turbine engine lubricant degradation with VIM VAR M50 bearings 增强酯(MIL‐PRF‐23699G)燃气涡轮发动机润滑油降解与VIM VAR M50轴承
IF 1.9 4区 工程技术
Lubrication Science Pub Date : 2022-12-28 DOI: 10.1002/ls.1635
Hitesh K. Trivedi, David T. Gerardi, Douglas K. Toth, Ruth F. Girouard, Patrick T. Hellman, Garry D. Givan
{"title":"Enhanced ester (MIL-PRF-23699G) gas turbine engine lubricant degradation with VIM VAR M50 bearings","authors":"Hitesh K. Trivedi,&nbsp;David T. Gerardi,&nbsp;Douglas K. Toth,&nbsp;Ruth F. Girouard,&nbsp;Patrick T. Hellman,&nbsp;Garry D. Givan","doi":"10.1002/ls.1635","DOIUrl":"10.1002/ls.1635","url":null,"abstract":"<p>Polyol-ester lubricants have been used and developed for aviation gas turbine engines for many decades. The newest MIL-PRF-23699 lubricant class, called enhanced ester (EE), provides the best combination of thermal stability, load carrying capability, boundary lubrication and compatibility with fluoroelastomer O-rings. Two candidate EE Class formulations and one high thermal stability class formulation conforming to MIL-PRF-23699G were evaluated for oil degradation with up to 3000 h of bearing operation. Lubricant degradation was studied using VIM VAR M50 bearings with M50 and silicon nitride balls under two operating conditions using two bearing test rigs. Oil degradation in terms of oxidation time, total acid number and viscosity was studied as a function of time with varying results for the three lubricants.</p>","PeriodicalId":18114,"journal":{"name":"Lubrication Science","volume":"35 4","pages":"237-248"},"PeriodicalIF":1.9,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48953010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Chemically functionalized graphene oxide with N-phenyl-p-phenylenediamine as efficient tribo- and rheological modifier for lubricating oil 化学官能化氧化石墨烯与N -苯基-对苯二胺作为润滑油的有效摩擦和流变改性剂
IF 1.9 4区 工程技术
Lubrication Science Pub Date : 2022-12-27 DOI: 10.1002/ls.1636
Priyanka Agarwal, Suheel K. Porwal, Jyoti Porwal, Raj K. Singh, Naveen Singhal
{"title":"Chemically functionalized graphene oxide with N-phenyl-p-phenylenediamine as efficient tribo- and rheological modifier for lubricating oil","authors":"Priyanka Agarwal,&nbsp;Suheel K. Porwal,&nbsp;Jyoti Porwal,&nbsp;Raj K. Singh,&nbsp;Naveen Singhal","doi":"10.1002/ls.1636","DOIUrl":"10.1002/ls.1636","url":null,"abstract":"<p>Nanoadditive with multifunctional properties holds commercial importance in the lubricant industry. Herein, GO-<i>N</i>-PPDA was synthesised as nanoadditive by functionalizing graphene oxide (GO) using <i>N</i>-phenyl-<i>p</i>-phenylenediamine and characterised by Fourier transform infrared spectroscopy, X-ray diffraction analysis, thermogravimetric analysis, scanning electron microscopy and transmission electron microscopy analysis. The antioxidant behaviour of GO-<i>N</i>-PPDA was analysed by 2,2-diphenyl-1-picryl-hydrazyl-hydrate. The nanoparticles dispersed mineral base oil (N-250) in 0.2%, 0.4%, 0.6% (w/v) concentrations were evaluated for tribological, rheological and thermophysical analysis by ASTM methods. The flow behaviour of the nanolubricant shows shear thickening behaviour with an increase in shear rate. In contrast, tribological results indicate a significant reduction in wear scar diameter and coefficient of friction to the base oil. Furthermore, GO-<i>N</i>-PPDA shows improved thermophysical properties compared with the mineral base oil. Thus, GO-<i>N</i>-PPDA shows multifunctional behaviour in terms of viscosity index, pour point, antioxidant activity, rheology and tribological properties.</p>","PeriodicalId":18114,"journal":{"name":"Lubrication Science","volume":"35 4","pages":"249-259"},"PeriodicalIF":1.9,"publicationDate":"2022-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43456184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preparation of graphene-loading copper nanoparticles by freeze drying and its tribological properties 石墨烯负载铜纳米颗粒的冷冻干燥制备及其摩擦学性能
IF 1.9 4区 工程技术
Lubrication Science Pub Date : 2022-12-27 DOI: 10.1002/ls.1638
Runling Peng, Wei Wang, Peng Wang, Jinyue Liu, Shijiao Liu, Haonan Zhai, Junde Guo
{"title":"Preparation of graphene-loading copper nanoparticles by freeze drying and its tribological properties","authors":"Runling Peng,&nbsp;Wei Wang,&nbsp;Peng Wang,&nbsp;Jinyue Liu,&nbsp;Shijiao Liu,&nbsp;Haonan Zhai,&nbsp;Junde Guo","doi":"10.1002/ls.1638","DOIUrl":"10.1002/ls.1638","url":null,"abstract":"<p>To reduce the agglomeration of graphene and improve the synergistic friction-reducing and anti-wear action of graphene loading copper, one-step preparation of reduced graphene oxide/copper(RGO/Cu) nanoparticles by freeze-drying method was used, the influence of process parameters on particles size of RGO/Cu is studied by orthogonal experiments. The microstructures of RGO/Cu nanoparticles are characterized by SEM and AFM, and the tribological properties of RGO/Cu nanoparticles are studied on a tribometer. The results show that the purity of RGO/Cu nanoparticles prepared by freeze-drying was higher, and the copper nanoparticles 100–200 nm are uniformly attached to the graphene surface. It was found that RGO/Cu nanoparticles have better friction reduction and anti-wear properties than graphene mono-agent as lubricant additive. The synergistic anti-friction and anti-wear performance are better at the addition of 0.10 wt% for RGO/Cu nanoparticles. Compared with the base oil, the friction coefficient decreases by 23.1%, and the width of wear scar decreases by 62.5%.</p>","PeriodicalId":18114,"journal":{"name":"Lubrication Science","volume":"35 4","pages":"270-278"},"PeriodicalIF":1.9,"publicationDate":"2022-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42437791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tribological performance of ammonium thiomolybdate as water-soluble lubricant additive for steel-steel contacts 水溶性润滑添加剂硫代钼酸铵的摩擦学性能
IF 1.9 4区 工程技术
Lubrication Science Pub Date : 2022-12-26 DOI: 10.1002/ls.1637
Javier Lara-Romero, Ricardo Rangel, Julián López-Tinoco, Jesús Antonio Carlos-Cornelio, Alejandro Toro-Betancur, Fernando Chiñas-Castillo, Gabriel Alonso-Nuñez, Sergio Jiménez-Sandoval
{"title":"Tribological performance of ammonium thiomolybdate as water-soluble lubricant additive for steel-steel contacts","authors":"Javier Lara-Romero,&nbsp;Ricardo Rangel,&nbsp;Julián López-Tinoco,&nbsp;Jesús Antonio Carlos-Cornelio,&nbsp;Alejandro Toro-Betancur,&nbsp;Fernando Chiñas-Castillo,&nbsp;Gabriel Alonso-Nuñez,&nbsp;Sergio Jiménez-Sandoval","doi":"10.1002/ls.1637","DOIUrl":"10.1002/ls.1637","url":null,"abstract":"<p>The friction and wear reducing properties of ammonium thiomolybdate as a water-soluble lubricant additive were evaluated using a pin-on-disck tribometer on a steel-steel contact. The tribological performance of aqueous solutions of thiomolybdate prepared at concentrations between 0.1 and 0.3 wt% Mo were evaluated at the same load (10 N), entrainment speed, sliding distance and temperature. Although there is a reduction of friction and wear compared with pure water, a significant difference is observed, depending on the additive concentration. SEM/EDAX and Raman spectroscopy analyses of the wear tracks of specimens tested at concentrations below 0.3 wt% Mo reveal the formation of FeS which is responsible for gradually reducing the coefficient of friction from values between 0.30 and 0.5 down to ~0.11. At 0.3 wt% Mo, the analyses indicated the formation of a MoS<sub>2</sub> which keeps the coefficient of friction in ~0.05, the lowest recorded value.</p>","PeriodicalId":18114,"journal":{"name":"Lubrication Science","volume":"35 4","pages":"260-269"},"PeriodicalIF":1.9,"publicationDate":"2022-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48512353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Impact of partial surface waviness on the tribological performance of hydrodynamic journal bearing 局部表面波纹度对流体动压滑动轴承摩擦学性能的影响
IF 1.9 4区 工程技术
Lubrication Science Pub Date : 2022-12-04 DOI: 10.1002/ls.1633
Arun Bangotra, Sanjay Sharma
{"title":"Impact of partial surface waviness on the tribological performance of hydrodynamic journal bearing","authors":"Arun Bangotra,&nbsp;Sanjay Sharma","doi":"10.1002/ls.1633","DOIUrl":"10.1002/ls.1633","url":null,"abstract":"<p>In this paper, the static performance analysis of journal bearing having full and partial surface waviness has been presented. The surface waviness is to be considered in the full, first half, second half, and pressure-increasing and decreasing regions of the bearing for analysis. The effect of surface waviness is considered by modifying the lubricant flow governing Reynolds equation with the film thickness equation and it is solved with the finite element method to get performance parameters like bearing load capacity, friction coefficient, and so forth operating under eccentricity ratios range of 0.2–0.8. The waviness geometrical parameters like waviness numbers and amplitudes are also considered in circumferential, axial, and both directions in the selected regions. The maximum performance has been found for waviness in the full and pressure-increasing region in the circumferential direction at a high eccentricity ratio.</p>","PeriodicalId":18114,"journal":{"name":"Lubrication Science","volume":"35 3","pages":"207-224"},"PeriodicalIF":1.9,"publicationDate":"2022-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44003550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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