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Journal articles on the topic 'Lubricating materials'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

John, Merbin, and Pradeep L. Menezes. "Self-Lubricating Materials for Extreme Condition Applications." Materials 14, no. 19 (2021): 5588. http://dx.doi.org/10.3390/ma14195588.

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Lubrication for extreme conditions, such as high temperature, cryogenic temperature, vacuum pressure, high load, high speed, and corrosive environments, is a continuing challenge among tribologists and space engineers due to the inadequate friction and wear properties of liquid lubricants. As a result, tremendous research effort has been put forward to study lubrication mechanisms for various machine elements under challenging conditions over the past two decades. Self-lubricating materials have been most widely used for adequate lubrication in extreme conditions in recent years. This review p

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2

Ding, Yang, and Peng Yun Song. "The Research Progress of Embedded Solid Lubricant Materials." Advanced Materials Research 535-537 (June 2012): 1369–73. http://dx.doi.org/10.4028/www.scientific.net/amr.535-537.1369.

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Embedded solid lubricant materials have good self-lubrication characteristics, which can realize lubrication in special some situations such as low-speed, high-load, high-temperature of the machinery without lubricating oil or grease. This paper presents a review concerning the structure of embedded solid lubrication materials, and its lubricating mechanism, the development of embedded solid lubricant materials, the latest research progress of the influence factors such as different types of metal substrates, mosaic, temperature, load, and porous structure and the application example of bearin

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3

Yan, Jiwang, Zhiyu Zhang, and Tsunemoto Kuriyagawa. "Effect of Nanoparticle Lubrication in Diamond Turning of Reaction-Bonded SiC." International Journal of Automation Technology 5, no. 3 (2011): 307–12. http://dx.doi.org/10.20965/ijat.2011.p0307.

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Lubrication is a key issue in diamond turning of hard materials. This paper explores the feasibility of nanoparticle lubrication in diamond turning of reaction-bonded SiC. Four types of nanoparticles were dispersed in lubricating grease and applied to a workpiece surface. Results showed that the type and concentration of dispersed nanoparticles significantly affected lubricating performance. Grease containing 10% Cu nanoparticles produced the highest surface quality and the lowest tool wear. Lubrication is discussed in terms of nanoparticle-induced solid lubricating film formation at the tool-

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4

Yin, Fang-long, Hui Ji, and Song-lin Nie. "Tribological behavior of various ceramic materials sliding against CF/PTFE/graphite-filled PEEK under seawater lubrication." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 233, no. 11 (2019): 1729–42. http://dx.doi.org/10.1177/1350650119845743.

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In order to select appropriate antifriction and wear resistance material combinations for key frictional pairs in seawater hydraulic components, tribological characteristics of SiC, Si3N4, Al2O3, and ZrO2 ceramics sliding against carbon fiber/polytetrafluoroethylene/graphite-filled polyetheretherketone composite lubricated with seawater were comparatively investigated with a ring-on-ring test rig. The results show that the nonoxide ceramics (Si3N4 and SiC), especially the Si3N4 ceramic, exhibited lower friction coefficients and smaller wear rates than those of oxide ceramics (Al2O3 and ZrO2).

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Liu, Guoqiang, Yang Feng, Nan Zhao, Zhuo Chen, Junqin Shi, and Feng Zhou. "Polymer-based lubricating materials for functional hydration lubrication." Chemical Engineering Journal 429 (February 2022): 132324. http://dx.doi.org/10.1016/j.cej.2021.132324.

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6

Ivanov, V. A., and S. P. Zakharychev. "Reinforced Antifriction Epoxy Fluoroplastics." Solid State Phenomena 284 (October 2018): 115–19. http://dx.doi.org/10.4028/www.scientific.net/ssp.284.115.

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The materials are antifriction self-lubricating (MAS) based on epoxy fluoroplastics compositions reinforced with various fabrics having increased tribotechnical characteristics under conditions of operation without lubrication, with lubrication or in an aqueous medium. A range of antifriction materials has been developed, as well as the main properties and recommendations for use.

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Hu, Ningning, Xiuheng Zhang, Xianghui Wang, Na Wu, and Songquan Wang. "Study on Tribological Properties and Mechanisms of Different Morphology WS2 as Lubricant Additives." Materials 13, no. 7 (2020): 1522. http://dx.doi.org/10.3390/ma13071522.

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In the present work, the relationship curve of the coefficient of friction (COF) with varying loads of different morphology WS2 lubricating additives in the friction process at various sliding speeds was studied. On this basis, wear marks and elements on the wear surfaces after friction were analyzed, and then the anti-wear and mechanism effects of WS2 of different forms in the lubrication process were discussed. Meanwhile, the Stribeck curve was used to study the lubrication state of the lubricating oil in the friction process. It was revealed that the COF of lubricating oil containing lamell

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8

Zhou, Hua Xiang, Zheng Zhou, and Jing Ping Liu. "High Temperature Cylinder Sleeve Design Research Self-Lubricating Materials." Applied Mechanics and Materials 628 (September 2014): 53–58. http://dx.doi.org/10.4028/www.scientific.net/amm.628.53.

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Cylinder Liner design innovation goal is energy conservation. As the main friction parts engine cylinder liner, reducing friction energy is energy saving basic requirements. Materials research cylinder sleeve is one of the main cylinder liner saving research. Through the piston ring and cylinder liner surface friction dual material hard phase, self-lubricating phase, toughening phase analysis, select compatibility, high strength, heat resistance, good high temperature performance, ease of manufacture, price rational matrix material and an appropriate proportion of nanoscale hard material, self

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9

Zhu, Yu Feng. "Research and Design on Reciprocating Oilless Air Compressors." Advanced Materials Research 945-949 (June 2014): 358–61. http://dx.doi.org/10.4028/www.scientific.net/amr.945-949.358.

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Research was made in order to design a good reciprocating oilless air compressor. Grease lubrication bearings are used in connecting rod larger heads, smaller heads and main shaft necks, its structures are designed, so the oilless lubrications are achieved over there. Self-lubricating materials are used to make piston pings and guiding pings, the lap-joint structure is used in piston pings, so the problems of oilless lubrication and seal between piston component and cylinders can be solved. The structure of unloading slots for guiding pings, smaller radius-length ratios and lower pressure rati

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10

Liu, Xiyao, Zhiwei Lu, Hao Dong, Yan Cao, and Xueming Qian. "Friction and Wear Characteristics of Microporous Interface Filled with Mixed Lubricants of M50 Steel at Different Loads." Materials 13, no. 13 (2020): 2934. http://dx.doi.org/10.3390/ma13132934.

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Improving the tribological performance of M50 steel under the conditions of wide load range is of great significance. In this study, the interfacial structure of surface micropores filled with Sn–Ag–Cu or Sn–Ag–Cu/whisker carbon nanotubes (whiskerCNT) of M50 material was prepared by laser additive manufacturing and high-temperature infiltration. From 2 to 22 N, the lubrication characteristics of Sn–Ag–Cu and whiskerCNT in surface micropores of M50 was investigated. Results indicate that Sn–Ag–Cu can precipitate to the worn surface and form a lubricating layer, which has a good lubricating effe

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11

Lu, Gang, Changgeng Shuai, Yinsong Liu, Xue Yang, and Xiaoyang Hu. "The Synergistic Effect of WS2 and SWNTs on Tribological Performance of Polyether MDI Polyurethane Elastomer under Dry and Wet Friction Conditions." Nanomaterials 12, no. 8 (2022): 1267. http://dx.doi.org/10.3390/nano12081267.

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To adapt to the complex application of polyurethane bearings, it is feasible to improve the tribological performance of single polyurethane-based friction materials through the synergistic effect produced by multi-component-lubricating fillers. In this context, rather than using tungsten disulfide (WS2), which has demonstrated excellent self-lubricating performance as a lubricating oil additive, this paper proposes that WS2 and single-walled carbon nanotubes (SWNTs) can be designed for addition into a polyether 4,4′-diphenylmethane diisocyanate (MDI) polyurethane matrix as self-lubricating fil

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12

Zhao, Panpan, and Jacob Klein. "Lubricating Polymer Gels/Coatings: Syntheses and Measurement Strategies." Gels 10, no. 6 (2024): 407. http://dx.doi.org/10.3390/gels10060407.

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Straightforward design and long-term functionality for tribological considerations has prompted an extensive substitution of polymers for metals across various applications, from industrial machinery to medical devices. Lubrication of and by polymer gels/coatings, essential for ensuring the cost-effective operation and reliability of applications, has gained strong momentum by benefiting from the structural characteristics of natural lubrication systems (such as articular cartilage). The optimal synthetic strategy for lubricating polymer gels/coatings would be a holistic approach, wherein the

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13

Zhao, Pinhui, Mingliang Dong, Yansheng Yang, et al. "Research on the Mechanism of Surfactant Warm Mix Asphalt Additive-Based on Molecular Dynamics Simulation." Coatings 11, no. 11 (2021): 1303. http://dx.doi.org/10.3390/coatings11111303.

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Warm mix asphalt (WMA) technology can bring certain environmental and technical benefits through reducing the temperature of production, paving, and compaction of mixture asphalt. Recent studies have shown that some WMA additives are able to reduce the temperature by increasing the lubricating properties of asphalt binder-based on the tribological theory, this paper studied the mechanism of adsorbing and lubricating film of base asphalt and WMA on the surface of stone by molecular dynamics (MD) simulation method, and the effect of surfactant WMA additive on the lubrication performance of the s

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14

Fan, Bing Li, An Nan Sun, Zheng Jie Li, Yi Wei Guo, Xiao Wen Qi, and Chang Xin Liu. "Experimental Study on Dissolution Stability and Dispersion and their Influence on Tribological Properties for Reducing Friction and Prolonging Life of Armored Vehicle Engine Lubricating Oil Additives." Advanced Engineering Forum 49 (May 31, 2023): 15–27. http://dx.doi.org/10.4028/p-ba6mc5.

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A lubricating oil additive for armored vehicle engine was synthesized by ultrasonic dispersion and physical blending with polyisobutylene and poly alpha olefin as polymer matrix, nanoBN and nanoALN as antifriction materials and polyisobutylene succinimide as surfactant. Polymer-based lubricating oil additive, hydroxyl magnesium silicate powder additive, commercial anti-wear repairing agent Goldway and commercial anti-wear protective agent Chief were dispersed into 10W-40 armored vehicle engine special lubricating oil according to a certain mass fraction. The dissolution stability of different

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15

Yu, Yongjian, Zifan Dong, Yujun Xue, Haichao Cai, and Jun Ye. "A Study on the Wear Characteristics of a Point Contact Pair of Angular Contact Ball Bearings Under Mixed Lubrication." Machines 13, no. 4 (2025): 312. https://doi.org/10.3390/machines13040312.

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Under mixed lubrication, the macro size is affected by the wear of the surface roughness peaks, which results in degradation of the bearing accuracy. To study the wear characteristics of rolling bearings under mixed lubrication, based on the elastohydrodynamic lubrication theory and Archard wear model, and considering the coupling of the oil film and roughness, a wear prediction model of angular contact ball bearings under mixed lubrication was established, and the influence of the working parameters and hardness on bearing wear was analyzed. The results show that the wear depth of the outer g

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16

Oganesova, E. Yu, A. S. Lyadov, and O. P. Parenago. "Nanosized Additives to Lubricating Materials." Russian Journal of Applied Chemistry 91, no. 10 (2018): 1559–73. http://dx.doi.org/10.1134/s1070427218100014.

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17

Gong, Hanjun, Chengcheng Yu, Lin Zhang, Guoxin Xie, Dan Guo, and Jianbin Luo. "Intelligent lubricating materials: A review." Composites Part B: Engineering 202 (December 2020): 108450. http://dx.doi.org/10.1016/j.compositesb.2020.108450.

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18

Wang, Xiu Ling, Li Ying Yang, and Shou Ren Wang. "Research and Development of Self-Lubricating Bearing Materials." Advanced Materials Research 651 (January 2013): 198–203. http://dx.doi.org/10.4028/www.scientific.net/amr.651.198.

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It is significant and necessary to carry out the research and development of self-lubricating bearing. The current study of metal matrix self-lubricating bearing materials is summarized. A new type of high temperature self-lubricating Ti-Al alloy bearing materials is proposed. It is light, anti-friction, anti-corrosion and high temperature resistance (600 °C). The future trend is introduced in the end of this paper.

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19

Ouyang, Jia-Hu, Yu-Feng Li, Yun-Zhuo Zhang, Ya-Ming Wang, and Yu-Jin Wang. "High-Temperature Solid Lubricants and Self-Lubricating Composites: A Critical Review." Lubricants 10, no. 8 (2022): 177. http://dx.doi.org/10.3390/lubricants10080177.

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Solid lubricants are described as solid materials of intentionally introduced or in situ formed on contact surfaces in relative motion for the purpose of lowering friction and wear and providing protection from damage. Solid lubricants and advanced self-lubricating materials are widely used in modern industries, especially in aerospace, aviation, automotive, metallurgy, materials forming, and machining industries, and have attracted great interest in lubrication applications under very severe circumstances such as elevated temperatures, heavy loads, ultrahigh vacuum, extreme radiation, strong

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20

EBNER, Martin, Shogo TOIDA, Thomas LOHNER, Klaus MICHAELIS, Bernd-Robert HOEHN, and Karsten STAHL. "Lubrication simulation for self-lubricating gears with oil-impregnated sintered materials." Proceedings of the Materials and Mechanics Conference 2018 (2018): OS0815. http://dx.doi.org/10.1299/jsmemm.2018.os0815.

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21

Li, Yang, Zelong Zhou, and Yongyong He. "Solid Lubrication System and Its Plasma Surface Engineering: A Review." Lubricants 11, no. 11 (2023): 473. http://dx.doi.org/10.3390/lubricants11110473.

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In aerospace, aviation, nuclear power, and other high-tech fields, some essential moving parts must operate under high vacuum, high load, intense radiation, and other conditions. Under such extreme conditions, only solid lubricating materials can meet the lubrication requirements. Traditional material modification methods have problems such as high energy consumption, severe pollution, and narrow scope of application. Plasma modification technology can overcome these shortcomings. This paper focuses on several commonly used plasma preparation techniques for solid lubricating coatings, includin

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22

Yang, Jing, Pengrui Cao, Ketian Gao, et al. "Thermal Tunable Tribological Behavior of Shape Memory Biphenyl Epoxy Resin." Coatings 13, no. 1 (2023): 166. http://dx.doi.org/10.3390/coatings13010166.

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Although polymer-based self-lubricating materials have rapidly developed recently, intelligent lubricating materials with self-adaptable lubrication with external conditions changing are highly demanded, especially for harsh conditions. Herein, a shape memory epoxy resin based on the biphenyl units (BPEP) with tunable tribological behavior was systematically studied. X-ray diffraction (XRD), field emission scanning electron microscope (SEM), laser confocal three-dimensional profiler, and optical microscope were applied to analyze the friction and wear mechanism. Due to the presence of the spec

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23

Xu, Xiu Guo, Chong Hai Xu, Bin Fang, Chun Lin Wang, and Ming Dong Yi. "Research and Development of Nano-Micro Composite Gradient Self-Lubricating Ceramic Cutting Tools." Advanced Materials Research 602-604 (December 2012): 512–17. http://dx.doi.org/10.4028/www.scientific.net/amr.602-604.512.

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The development status of self-lubricating tool materials was reviewed in the present study, as well as the five basic types of self-lubricating tool and the current situation of nanometer materials in ceramic cutting tool. Based on these, the design idea of the functional gradient materials and nano-micro composite materials was introduced into the self-lubricating ceramic cutting tool materials, in order to develop new self-lubricating ceramic cutting tool materials with both good mechanical and frictional properties.

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24

Moorthy, Appusamy Anandha, Subramaniyan Madheswaran, L. Ganesh Babu, et al. "Analyzing Experimentally the Dynamic Characteristics of Journal Bearings Under Various Load Conditions." Journal of Physics: Conference Series 2925, no. 1 (2024): 012020. https://doi.org/10.1088/1742-6596/2925/1/012020.

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Abstract This paper aims to experimentally assess the performance of plain bearings casted as self-lubricating composite materials. Metal stir casting is used to prepare plain bearings based on composite materials, which are made of AA 2218 Al alloy, 4% MoS2, and 15% fly ash. Arrangement of shafts in the textile industry is reflected in the impression of the experimental setting, which was derived from earlier literature. To obtain vibration signals, the DAQ kit and accelerometer were connected using the Laboratory Virtual Instrument Engineering Workbench (LAB-view) as a graphical data collect

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25

Górny, Kasper, Arkadiusz Stachowiak, Przemysław Tyczewski, and Wiesław Zwierzycki. "Mixtures of Lubricants and Ecological Refrigerants under Starved Lubrication Conditions." Materials 15, no. 21 (2022): 7747. http://dx.doi.org/10.3390/ma15217747.

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The presented results show that the presence of refrigerant significantly deteriorates the lubricating properties of compressor oil under starved lubrication conditions (with a small amount of oil). The change can be 40–120% compared to the properties of the oil alone. Additionally, in the group of oils that are substitutes (operational alternatives) compatible with a given refrigerant, the effect of the refrigerant on the lubricating properties varies. The differences can be as much as 25%. In order to evaluate and properly select compressor oils for the refrigerant, the lubricating propertie

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26

Wu, Guang Yong, Chong Hai Xu, Yong Lian Zhang, and Ming Dong Yi. "Development of Al₂O₃/TiC/CaF₂ Graded Self-Lubricating Ceramic Cutting Tool Materials." Materials Science Forum 723 (June 2012): 258–63. http://dx.doi.org/10.4028/www.scientific.net/msf.723.258.

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The design concept of functionally graded materials was first introduced into the development of self-lubricating ceramic cutting tool materials. An Al2O3/TiC/CaF2graded self-lubricating ceramic cutting tool material was designed and fabricated. Mechanical properties were evaluated by comparing with those of Al2O3/TiC/CaF2homogeneous self-lubricating ceramic cutting tool material. The results showed that the Al2O3/TiC/CaF2graded self-lubricating ceramic cutting tool material had superior performance to the counterpart. Graded self-lubricating ceramic cutting tool materials are bound to have pr

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27

Huang, Huei-Ting, and Hsu-Wei Fang. "LUBRICATING CHARACTERISTICS OF HYALURONIC ACID MOLECULES ON THE ALBUMIN-MEDIATED TRIBOLOGICAL PROCESSES." Biomedical Engineering: Applications, Basis and Communications 24, no. 06 (2012): 557–62. http://dx.doi.org/10.4015/s1016237212500512.

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Synovial fluid mediated boundary lubrication is the key mechanism dominating the wear process of the artificial joint materials. The most abundant composition in the synovial fluid is albumin. It has been observed that the increasing human serum albumin (HSA) concentration leads to the increasing friction coefficient under the articulation of ultra-high molecular polyethylene (UHMWPE) and CoCrMo alloy materials. In this study, the friction and adsorption experiments were carried out to investigate the effects from addition of hyaluronic acid (HA) molecules. Our results indicated that the incre

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28

Liu, Lincong, Ming Zhou, Xiao Li, et al. "Research Progress in Application of 2D Materials in Liquid-Phase Lubrication System." Materials 11, no. 8 (2018): 1314. http://dx.doi.org/10.3390/ma11081314.

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Two-dimensional (2D) materials are ultra-thin crystals with layered structures that have a monolayer and multiple layers of atomic thickness. Due to excellent performance, 2D materials represented by graphene have caused great interest from researchers in various fields, such as nano-electronics, sensors, solar cells, composite materials, and so on. In recent years, when graphite was used for liquid phase lubrication, there have been many disadvantages limiting its lubrication properties, such as stable dispersion, fluidity and so on. Therefore, 2D materials have been used as high-performance

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29

Al Mahmud, K. A. H., M. A. Kalam, H. H. Masjuki, and H. M. Mobarak. "Tribological Characteristics of Amorphous Hydrogenated DLC in the Presence of Commercial Lubricating Oil." Key Engineering Materials 642 (April 2015): 179–83. http://dx.doi.org/10.4028/www.scientific.net/kem.642.179.

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Currently diamond like carbon (DLC) coatings application for automotive components is becoming a favorable strategy to cope with new challenges faced by automotive industries. DLC coating is very effective to lower the coefficient of friction and wear rate, which in turn could improve fuel efficiency and durability of the engine components. Commercially available fully formulated lubricating oils are specially produced to enhance the lubrication of ferrous materials. Therefore, nonferrous coating (DLC) interaction with commercial lubricating oil needs to be investigated. In this current invest

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30

Liu, Shuinan. "Mechanical and wear behavior of self-lubricating hybrid metal matrix composite(MMC)." Highlights in Science, Engineering and Technology 116 (November 7, 2024): 226–36. http://dx.doi.org/10.54097/aeqg7d76.

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This study investigates the mechanical and wear behavior of self-lubricating mixed metal matrix composites (MMCs) by focusing on magnesium reinforced with graphene nanoparticles (GNP) and silicon carbide (SiC). The aim of this study was to explore the potential of magnesium as a base material for advanced applications due to its lightweight and strength properties, while combining GNP for improved lubrication and SiC for increased mechanical strength. Samples were prepared and analyzed using powder metallurgy techniques and the results showed that while GNP improves self-lubrication, it reduce

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31

Liu, Shusheng, Xiuqian Yu, Enzhu Hu, et al. "Effect of Cu-Doped Carbon Quantum Dot Dispersion Liquid on the Lubrication Performance of Polyethylene Glycol." Lubricants 11, no. 2 (2023): 86. http://dx.doi.org/10.3390/lubricants11020086.

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Energy saving and reduced consumption of key materials such as bearings in high-end equipment can be realized by synthesizing a new lubricating functional additive, copper-doped carbon quantum dot dispersion liquid (Cu-CQDs) via hydrothermal reaction with glycerol, cupric chloride dihydrate, and choline chloride as raw materials. The influence of the dispersion liquid containing Cu-CQDs nanoparticles on the lubricating properties of polyethylene glycol (PEG200) was investigated on a four-ball friction tester. The wear scars of steel balls after friction were analyzed using a scanning electron

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32

Cui, Jianbing, Bo Mu, Baoping Yang, et al. "Mesoporous silica as smart lubrication containers applied to self‐lubricating polyurethane materials." Journal of Applied Polymer Science 138, no. 1 (2020): 49612. http://dx.doi.org/10.1002/app.49612.

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Kumari, Soni, Meet Shah, Yug Modi, et al. "Effect of Various Lubricating Strategies on Machining of Titanium Alloys: A State-of-the-Art Review." Coatings 12, no. 8 (2022): 1178. http://dx.doi.org/10.3390/coatings12081178.

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In recent years, researchers have proposed a variety of sustainable ways of achieving maximal lubricant efficacy with the least amount of lubricant. As an alternative to traditional lubricating procedures, these planned solutions have been highly embraced by scientific groups. This paper provides a comprehensive review of modern cooling/lubrication technologies and their influence on titanium alloy milling, grinding, and turning. Selected studies on recent advances in the lubrication system, such as power consumption, cutting forces, surface finish, and so on, are examined. The effect of vario

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34

Hasanov, Magomedemin, Aleksandr Rudnev, Oleksii Kotlyar, Oksana Titarenko, and Ilya Korchagin. "ASSESSMENT OF THE LUBRICATING CAPACITY OF SOLID LUBRICATING MATERIALS IN DIAMOND GRINDING OF HEAVY-PROCESSED MATERIALS." Bulletin of the National technical university "Kharkiv Polytechnic Institute" Series: Techniques in a machine industry, no. 1(9) (December 27, 2024): 69–74. https://doi.org/10.20998/2079-004x.2024.1(9).9.

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The results of research on cutting forces during diamond grinding of materials used in the manufacture and repair of aircraft equipment: titanium alloy VK6 and heat-resistant dispersion-hardening high-alloy stainless steel 10Х11Н23Т3МР were analyzed. Grinding was carried out using solid lubricating materials developed by the authors. The obtained results allow us to state that solid lubricating materials are able to effectively reduce friction. Stearic acid should be considered the basis for the creation of TZM with further improvement of their composition

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35

Jin, Z. M., and D. Dowson. "A full numerical analysis of hydrodynamic lubrication in artificial hip joint replacements constructed from hard materials." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 213, no. 4 (1999): 355–70. http://dx.doi.org/10.1243/0954406991522310.

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A full numerical analysis of the hydrodynamic lubrication problem of artificial hip joint replacements with surfaces of high elastic modulus materials, such as metal-on-metal or ceramic-on-ceramic, under cyclic walking conditions is reported in this paper. The Reynolds equation in spherical coordinates has been solved for both entraining and combined entraining and squeeze film motions under a three-dimensional variation in both the load and the speed experienced in hip joints during walking. It has been shown that a finite lubricating film thickness can be developed during the walking cycle o

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Wang, Xigui, Jian Zhang, Yongmei Wang, and Chen Li. "Self-Anti-Disturbance Control of a Hydraulic System Subjected to Variable Static Loads." Applied Sciences 12, no. 14 (2022): 7264. http://dx.doi.org/10.3390/app12147264.

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A hydraulic system’s lubricating oil is subject to serialized variable static loads with performance. An improved self-turbulent flow algorithm, based on the real-time acquisition and monitoring of lubricating oil static pressure in a hydraulic system to simulate variable static loads, is proposed. A mathematical model of the electrohydraulic servo control system for lubricating oil static pressure acquisition is presented, and the self-turbulent flow controller is designed for numerical analysis. The self-anti-disturbance control strategy for the lubricating oil static pressure of an electroh

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Khatkar, S. K., N. M. Suri, S. Kant, and Pankaj. "A Review on Mechanical and Tribological Properties of Graphite Reinforced Self Lubricating Hybrid Metal Matrix Composites." REVIEWS ON ADVANCED MATERIALS SCIENCE 56, no. 1 (2018): 1–20. http://dx.doi.org/10.1515/rams-2018-0036.

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Abstract Hybrid metal matrix composites (HMMC’s) are next generation metal matrix composite materials that have the potential of gratifying recent demands of advanced energy applications in the field of aerospace, automobile and biomedical. The MMC’s have to work at elevated temperature or vacuum environment where lubrication using liquid lubricants is ineffective or difficult to achieve; moreover, liquid lubricants are not environmental friendly, since they releases pollutants into environment. Solid lubricants such as graphite, CNT’s, MoS2and graphene have been widely used as secondary reinf

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38

Hou, Suo Xia, Hui Gao, and Xiao Ming Jia. "Application of WS₂ in Solid Lubricant Coating for Metal." Advanced Materials Research 652-654 (January 2013): 1904–7. http://dx.doi.org/10.4028/www.scientific.net/amr.652-654.1904.

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WS2has excellent tribological properties; it is emerging of lubricating materials. MoS2is commonly used solid lubricants and wide range of applications, but its poor heat resistance. WS2can well make up for the inadequate performance of the MoS2, but uses it as a solid lubricant in performance research on metallic materials. By friction and wear testing, the paper gets feasibility analysis of the application that WS2instead of MoS2in the field of solid lubrication, while exploring the synergies between them, laying the foundations for the manufacture of new types of composite lubrication coati

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Wróblewski, Piotr. "The Theory of the Surface Wettability Angle in the Formation of an Oil Film in Internal Combustion Piston Engines." Materials 16, no. 11 (2023): 4092. http://dx.doi.org/10.3390/ma16114092.

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In internal combustion piston engines, the formation of an oil film is completely different from that seen in industrial machines. The molecular adhesion force at the interface between the surface coating of engine parts and the lubricating oil determines the load-carrying capacity and the ability to form a lubricated film. The geometry of the lubricating wedge between the surfaces of the piston rings and the cylinder wall is created by the thickness of the oil film and the height of the ring’s coverage with lubricating oil. This condition is affected by many of the parameters that characteriz

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Čípek, Pavel, Martin Vrbka, David Rebenda, David Nečas, and Ivan Křupka. "Biotribology of Synovial Cartilage: A New Method for Visualization of Lubricating Film and Simultaneous Measurement of the Friction Coefficient." Materials 13, no. 9 (2020): 2075. http://dx.doi.org/10.3390/ma13092075.

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A healthy natural synovial joint is very important for painless active movement of the natural musculoskeletal system. The right functioning of natural synovial joints ensures well lubricated contact surfaces with a very low friction coefficient and wear of cartilage tissue. The present paper deals with a new method for visualization of lubricating film with simultaneous measurements of the friction coefficient. This can contribute to better understanding of lubricating film formation in a natural synovial joint. A newly developed device, a reciprocating tribometer, is used to allow for simult

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Tang, Siwen, Rui Wang, Pengfei Liu, et al. "Preparation of WC-TiC-Ni3Al-CaF2 functionally graded self-lubricating tool material by microwave sintering and its cutting performance." High Temperature Materials and Processes 39, no. 1 (2020): 45–53. http://dx.doi.org/10.1515/htmp-2020-0004.

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AbstractWith the concern of the environment, green dry cutting technology is getting more and more attention and self-lubricating tool technology plays an important role in dry cutting. Due to the demand for high temperature performance of tools during dry cutting process, cemented carbide with Ni3Al as the binder phase has received extensive attention due to its excellent high temperature strength and high temperature oxidation resistance. In this paper, WC-TiC-Ni3Al-CaF2 graded self-lubricating material and tools were prepared by microwave heating method, and its microstructure, mechanical p

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Kumar, Rahul, Irina Hussainova, Ramin Rahmani, and Maksim Antonov. "Solid Lubrication at High-Temperatures—A Review." Materials 15, no. 5 (2022): 1695. http://dx.doi.org/10.3390/ma15051695.

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Understanding the complex nature of wear behavior of materials at high-temperature is of fundamental importance for several engineering applications, including metal processing (cutting, forming, forging), internal combustion engines, etc. At high temperatures (up to 1000 °C), the material removal is majorly governed by the changes in surface reactivity and wear mechanisms. The use of lubricants to minimize friction, wear and flash temperature to prevent seizing is a common approach in engine tribology. However, the degradation of conventional liquid-based lubricants at temperatures beyond 300

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Papeikin, O. O., L. Yu Bodachivska, I. O. Venger, D. Z. Davitadze, and O. А. Spaska. "Lubricating materials based on waste oleo products." Catalysis and Petrochemistry, no. 31 (2021): 48–54. http://dx.doi.org/10.15407/kataliz2021.31.048.

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Phosphatide concentrates and waste cooking oils - wastes that do not find qualified use and sources of environmental pollution, on the one hand, and on the other - valuable raw materials for the production of lubricating materials, additives and surfactants. The paper demonstrates the possibility of using these wastes as components in technologies for obtaining hydrated calcium greases and surfactants. By saponification of phosphatide concentrates and waste cooking oils were obtained the dispersed phases of thixotropic systems and were investigated their rheological properties. Derivatives of

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Wang, Yufei, Xibo Shao, Jianyu Liu, Xinyue Hu, Xuhui He, and Guanyu Deng. "Difference in High-Temperature Tribological Performance of Oxide/Ag-MoS2-Based Composites." Lubricants 12, no. 10 (2024): 360. http://dx.doi.org/10.3390/lubricants12100360.

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MoS2 has excellent vacuum lubricating performance. However, it is prone to be oxidized in a high-temperature atmospheric environment, leading to the deterioration of its lubricating performance and even serious space accidents. The high-temperature lubricating performance of MoS2-based solid lubricating materials can be improved to some extent by the co-compounding of appropriate oxides and Ag. The tribological properties of several common nano-oxides (ZnO, TiO2, Al2O3, and ZrO2) composited with metal Ag of MoS2-based composites were compared at 450 °C. The results showed that the comprehensiv

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Wu, Guang Yong, Chong Hai Xu, Yong Lian Zhang, and Ming Dong Yi. "State of the Art of Graded Self-Lubricating Ceramic Cutting Tool Materials." Applied Mechanics and Materials 66-68 (July 2011): 1598–604. http://dx.doi.org/10.4028/www.scientific.net/amm.66-68.1598.

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In this paper, the effects of addition of solid lubricants on mechanical properties, tribological properties and cutting performance of ceramic cutting tool materials were analyzed. The problem that existing homogeneous self-lubricating ceramic cutting tool materials were not available to possess rational combination of antifriction and antiwear properties was pointed out. The main methods to acquire graded self-lubricating materials were discussed. The design concept and research prospect of graded self-lubricating ceramic cutting tool materials were proposed, which would have promising appli

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Yoshimura, Takao, Kyosuke Ono, Koˆ Inagaki, Hideki Kotsuka, and Atsushi Korenaga. "Analysis of Lubricating Characteristics of Rotary Compressors for Domestic Refrigerators." Journal of Tribology 121, no. 3 (1999): 510–16. http://dx.doi.org/10.1115/1.2834097.

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We investigated the lubricating characteristics between a vane and piston lubricated with an oil-refrigerant mixture. Theoretical analyses were performed using mixed elastohydrodynamic lubrication analysis theory, taking metallic contacts into account. Lubricating conditions were evaluated by comparing the theoretical results of piston dynamics based on actual surface roughness distributions measured by SEM, with the experimental results measured under practical operation. We conclude that (1) lubricating conditions between the vane and piston can be assumed to be within the mixed lubricating

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Voronin, Serhii, Volodymyr Stefanov, Oleksii Suranov, Vitalii Hamora, and Sergii Stefanov. "RESEARCH OF AEROSOL APPLICATION SYSTEMS FOR APPLYING LUBRICATING MATERIAL IN THE «WHEEL-RACK» CONTACT." Collection of Scientific Works of the Ukrainian State University of Railway Transport, no. 208 (June 28, 2024): 7–23. http://dx.doi.org/10.18664/1994-7852.208.2024.308065.

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The article discusses various methods of lubricating the «wheel-rail» contact zone aimed at reducing friction coefficient and improving the efficiency of energy resource utilization, safety of movement, and environmental indicators. Technologies for delivering lubricating materials to this zone, such as lubricating rods, stationary systems using brushes, or railhead applicators, are outlined. The article highlights issues with existing technologies, including excessive lubrication, the need for component replacements, high lubricant material consumption, and uneven or incorrect application. It

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Wu, Xinmeng, Yaohong Jiang, Tianhao Wu, et al. "Insight into the Mechanisms of Nitride Films with Excellent Hardness and Lubricating Performance: A Review." Nanomaterials 13, no. 15 (2023): 2205. http://dx.doi.org/10.3390/nano13152205.

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Transition metal nitride (TMN) films with excellent hardness and lubricating performance are versatile low dimension materials, which are widely used in various fields including industries, transportation, aerospace, and so on. This paper introduces one film design strategy and provides a review of the mechanisms for strengthening and lubricating nitride films. The design strategy refers to two aspects which determine the structures, the performance, the components, and the chemical constitutions of nitride films The strengthening mechanisms of nitride films are then illuminated in detail, inc

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Tao, Laihua, Qiaoyi Wang, Ziwei Qi, Huajie Wu, Hanbin Zhu, and Junbo Huang. "Analysis of the Rolling Interface Contact Characteristics in Mixed Lubrication Based on Gaussian Distribution Theory." Materials 16, no. 15 (2023): 5220. http://dx.doi.org/10.3390/ma16155220.

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To reveal the influence of surface morphology characteristics in mixed lubrication on the contact characteristics of the rolling interface, a random three-dimensional rough surface model based on Gaussian distribution theory was established. The model utilizes the finite element method (FEM) to simulate the regular contact and tangential sliding behavior of micro-asperities at the rolling interface in mixed lubrication conditions. The connection bearing capacity of models with varied roughness in mixed lubrication was studied. Furthermore, the effect of various sliding and normal indentation a

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Wang, Yiran, Liujie Xu, and Xiuqing Li. "Tribological Properties of Cu-Based Self-Lubricating Materials Composed with Cu- or Ni-Plated Graphite." Lubricants 11, no. 7 (2023): 271. http://dx.doi.org/10.3390/lubricants11070271.

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Cu-based self-lubricating materials can effectively adapt to complex natural environments and ensure consistency in materials used for switch transitions. These materials were tested through interface reinforcement research, improving their mechanical and tribological properties and providing a theoretical basis for new switch slide baseplate materials. Results showed that the coefficient of friction and wear weight loss of Cu-based self-lubricating materials decreased with an increase in graphite content after Cu and Ni plating on the graphite surface, reaching a minimum value at a graphite c

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