H. Ōkubo, Chiharu Tadokoro, Shinya Sasaki,
... evaluated using the reciprocating type cylinder-on-disk tribo-tester. ZDDP and three types of organic additives (GMO, glycerol mono-oleoyl ether (GME), and tallow diethanol amine (TDEA)) were added to poly-alpha olefin (PAO). Friction tests were carried out for the DLC/DLC tribo-pair under lubrication with PAO and PAO-based ...
Tópico(s): Metal and Thin Film Mechanics
2015 - Elsevier BV | Wear
Manu Sam, N. Radhika, Bassiouny Saleh,
Thermally treated functionally graded aluminum hybrid composite is an innovative solution to the expanding mechanical and tribological needs of the marine industry. Through horizontal centrifugal casting, gradation of secondary (SiC) and primary (B4C) ceramics improves the reciprocal wear resistance of 6 wt%B4C/4 wt%SiC/A333 hybrid composite over 6 wt%B4C/A333 mono-composite and A333 alloy. Advanced characterization demonstrates the change in grain size and detects strengthening phases. When using ...
Tópico(s): MXene and MAX Phase Materials
2023 - Elsevier BV | Materials Today Chemistry
H. Ōkubo, Ryo Tsuboi, Chiharu TADOKORO, Shinya SASAKI,
... evaluated using the reciprocating type cylinder-on-disk tribo-tester. ZnDTP and three types of organic additives (GMO, glycerol mono-oleoyl ether (GME), and tallow diethanol amine (TDEA)) were added to poly-alpha olefin (PAO). Friction tests were carried out for the DLC/Steel tribo-pair under lubrication with PAO and PAO-based ...
Tópico(s): Tribology and Wear Analysis
2015 - Japan Society Mechanical Engineers | Transactions of the JSME (in Japanese)
Subramanian Karthikeyan, N. Rajini, Patrick De Baets, S. Saravanasankar, Winowlin Jappes Jebas Thangiah, Jacob Sukumaran,
Two different composite material systems were designed and studied i.e., basalt fiber/vinyl ester composite (non-layered) and the other is PTFE (10 wt%) blended basalt fiber/vinyl ester composite (layered). The tribo-test was performed for the constant pressure and velocity in a flat-on-flat configuration. The characterization techniques such as FTIR and XRD were performed. Nevertheless, increase in thermal conductivity of 0.187 W/m-k was noticed for layered composites. Tribo-test revealed the average ...
Tópico(s): Brake Systems and Friction Analysis
2016 - Elsevier BV | Tribology International
... critical elements in coating performance when subjected to tribo-corrosion contacts. The importance of post-coating deposition treatments such as laser resurfacing and sealing are also discussed. Interactions between wear and corrosion mechanisms are identified along with some models and mapping techniques that aim to inform coating selection and predict performance. Recent investigations into mono-layer as well as multilayered and functionally graded coatings are reviewed as candidates for wear–corrosion resistant surfaces. The review reveals the need for a more considered approach to tribo-corrosion testing and the way in which the ...
Tópico(s): High-Temperature Coating Behaviors
2007 - Institute of Physics | Journal of Physics D Applied Physics
Neeraj Dwivedi, Tarak K. Patra, Jae-Bok Lee, Reuben J. Yeo, Srilok Srinivasan, Tanmay Dutta, Kiran Sasikumar, Chetna Dhand, S. Tripathy, Mohammad S. M. Saifullah, Aaron J. Danner, S. A. R. Hashmi, Avanish Kumar Srivastava, Jong‐Hyun Ahn, Subramanian K. R. S. Sankaranarayanan, Hyunsoo Yang, Charanjit S. Bhatia,
... graphene's contact-sliding at micro- and macroscopic tribo-scales over a broader range of surfaces. We discover that graphene's performance reduces for surfaces with increasing roughness. To overcome this, we introduce a new type of graphene/silicon nitride (SiNx, 3 nm) bilayer overcoats that exhibit superior performance compared to native graphene sheets (mono and bilayer), that is, display the lowest microscale ...
Tópico(s): Graphene and Nanomaterials Applications
2019 - American Chemical Society | Nano Letters
Asha Kumar, Tamonash Jana, Sushanta Ghuku, Arkadeb Mukhopadhyay,
Abstract A quaternary, lead free electroless Ni-B-Cu-Sn coating was obtained using experimental design, artificial neural network and genetic algorithm based on higher hardness and deposition rate. A high predicted as-deposited hardness of 1138 HV 0.05 and deposition rate of 10 µm/hr was achieved. Coating surface had nodular, self-similar fractal nature with higher density for the bi-layered variant. The surface roughness and tribological behaviour was better for the single layered coating. Adoption ...
Tópico(s): Advanced Machining and Optimization Techniques
2025 - IOP Publishing | Surface Topography Metrology and Properties
A H Hamisa, W.H. Azmi, Mohd Farid Ismail, Rosminazuin Ab Rahim, Hafız Muhammad Ali,
... WSD) were investigated using a Koehler four-ball tribo tester and microscopes. For the TiO2/POE, SiO2/POE and TiO2-SiO2/POE nanolubricants, respectively, the lowest COFs with maximum reduction were attained at 37.5%, 33.5% and 31.6% each at volume concentrations of 0.05%, 0.01% and 0.03%. The highest WSD reduction for the TiO2/POE and SiO2/POE mono nanolubricants were attained at 12.5% and 26. ...
Tópico(s): Tribology and Lubrication Engineering
2023 - Multidisciplinary Digital Publishing Institute | Lubricants
Takahide Mizawa, Yoosuke Nakata, Yusuke Mizuno, Toshihiko Oguchi,
... spherical monodispersed particles and spherical reference particles, the tribo-charging characteristics can be measured reproducibly even when small mono-dispersed particles having a diameter of 2 μm are used. The combination can be used as an ideal standard mixture for the tribo-charge measurements.
Tópico(s): Electrostatics and Colloid Interactions
2003 - | Technical programs and proceedings/Technical program and proceedings
G. Gubbels, G.J.F.T. van der Beek, A.L. Hoep, F.L.M. Delbressine, H. van Halewijn,
... but the relatively large tool wear of the mono-crystalline diamond tools may be a problem. This paper will discus possible tool wear mechanisms that occur during diamond turning of glassy (amorphous) polymers. Special attention is given to thermal-oxidative tool wear, tribo-electric tool wear and tribo-chemical tool wear. ...
Tópico(s): Engineering Technology and Methodologies
2004 - Elsevier BV | CIRP Annals
German Fox‐Rabinovich, J.L. Endrino, Myriam H. Aguirre, Ben D. Beake, Stephen C. Veldhuis, А. И. Ковалев, Иосиф Гершман, Kenji Yamamoto, Yannick Losset, Dmitry Wainstein, Alexander Rashkovskiy,
Recently, a family of hard mono- and multilayer TiAlCrSiYN-based coatings have been introduced that exhibit adaptive behavior under extreme tribological conditions (in particular during dry ultrahigh speed machining of hardened tool steels). The major feature of these coatings is the formation of the tribo-films on the friction surface which possess high protective ability under operating temperatures of 1000 °C and above. These tribo-films ...
Tópico(s): Tribology and Wear Analysis
2012 - American Institute of Physics | Journal of Applied Physics
Produção Nacional
Revisado por pares
... Druck GmbH. Google Scholar Baldus, Herbert 1970 Tapirapé: Tribo do Brasil Central. São Paulo: Companhia Editora Nacional, ... Eduardo 1953 Cultura e Sistema de Parentesco das Tribos do Alto Xingu. Rio de Janeiro: Boletim do ... Scholar Melatti, Julio Cezar 1978 Ritos de uma Tribo Timbira. São Paulo: Atica. Google Scholar Melatti, Julio ... Ciclo Anual das Atividades de Subsistência de uma Tribo da Floresta Tropical. Sáo Paulo: Anais do XXXI ... Schaden, Egon 1959[1945] A Mitologia Heróica de Tribos Indígenas do Brasil: Ensaio Etno-Socioló-gico. Rio ...
Tópico(s): Cultural, Media, and Literary Studies
1990 - Wiley | Cultural Anthropology
R.K. Uyyuru, M.K. Surappa, S. Brusethaug,
... behavior of aluminium matrix composite (AMC)/brake pad tribo-couple under dry sliding conditions was studied using ... performed to characterize the tribological nature of the tribo-couple. Load and sliding speeds were varied over ... been studied. It was observed that a heterogeneous tribo-layer was formed over the worn surfaces during the wear tests. Presence of tribo-layer was believed to cause two effects: acting ... found to be higher compared to composite containing mono-size reinforcement.
Tópico(s): Tribology and Wear Analysis
2005 - Elsevier BV | Wear
Ponnekanti Nagendramma, Praveen K. Khatri, Gananath D. Thakre, Suman L. Jain,
... synthesized by using polyol alcohol, dibasic acid and mono alcohol as end capping agent in the presence of p-toluene sulfonic acid as catalyst. The synthesized product has been evaluated for its physic-chemical properties such as kinematic viscosity, viscosity index, flash point and pour point. The synthesized ester was blended with aspartic acid and glutamic acid derived ionic liquids (ILs) to investigate the tribo-performance behavior. The anti-friction and anti-wear ...
Tópico(s): Fuel Cells and Related Materials
2017 - Elsevier BV | Journal of Molecular Liquids
... in optimizing the fine fluidity and the fine tribo-electric charging ability of polymerized toner of positive polarity. These advantages made the combination of the non-magnetic mono-component impression developing process and the cleaner-less ...
Tópico(s): Surface Roughness and Optical Measurements
2004 - | Technical programs and proceedings/Technical program and proceedings
Nalini Mallikarjuna, J. Keshavayya, B. M. Prasanna, B. M. Praveen, H.C. Tandon,
Tópico(s): Nanofabrication and Lithography Techniques
2019 - Springer Science+Business Media | Journal of Bio- and Tribo-Corrosion
Produção Nacional
Revisado por pares
C.R.F. Azevedo, Antonio Manoel Dias Henriques, Athail Rangel Pulino Filho, J.L.A. Ferreira, Josè Alexander Araújo,
... formation of abrasive debris on the clamp/conductor tribo-interface, promoting even further the fretting mechanism. The ...
Tópico(s): Vibration and Dynamic Analysis
2008 - Elsevier BV | Engineering Failure Analysis
Dmitry Fomitchev, Hairuo Tu, Adam Mackay, Casey Whicher, Jincheng Xiong, William David Williams, Joachim K. Floess, Doug West,
... positive tribo-charge.In this paper we present tribo-charge results for a class of silica powders manufactured from aqueous colloidal silica dispersions. Surface treatments are done using various mono- and tri-functional organosilane treating agents. Analysis of ...
Tópico(s): NMR spectroscopy and applications
2007 - | Technical programs and proceedings/Technical program and proceedings
Talwinder Singh, Chandan Singh, Rajdeep Singh,
... Also, MQL under H-NF discloses notably improved tribo-performance due to the synergistic effect caused by ...
Tópico(s): Advanced materials and composites
2023 - Emerald Publishing Limited | Industrial Lubrication and Tribology
Raimondas Kreivaitis, J. Padgurksas, Vytenis Jankauskas, Artūras Kupčinskas, Violeta Makarevičienė, Milda Gumbytė,
... could take place and also the formation of tribo-chemical layer is possible. The analysis of wear ...
Tópico(s): Tribology and Lubrication Engineering
2009 - AGH University of Science and Technology | Mechanics and Control
... preparation or because of the samples being of mono-crystalline nature. This paper offers an alternative explanation to the behaviour of tribo-emitted particles based on the pressure induced semi- ...
Tópico(s): Force Microscopy Techniques and Applications
2010 - | International Journal of Precision Technology
Levente Ferenc Tóth, Gábor Szebényi, Jacob Sukumaran, Patrick De Baets,
... transfer layer formation, and the wear mechanism of mono-filled polytetrafluoroethylene (PTFE).A well-known limitation of PTFE is the low wear resistance, which can be surpassed with the use of micro-or nanoparticles.The applied fillers were graphene, alumina (Al 2 O 3 ), boehmite alumina (BA80), and hydrotalcite (MG70).The samples were produced by room temperature pressing -free sintering method.All specimens were tested with a pin-on-disc tribo-tester in dry contact condition against 42CrMo4 steel ...
Tópico(s): Fiber-reinforced polymer composites
2021 - Budapest University of Technology and Economics | eXPRESS Polymer Letters
... part.- P. E. Shaw and C. S. Jex: Tribo-electricity and friction.-H. G. de Laszlo: The absorption-spectra of some naphthalene derivatives in vapour and solution. The ultra-violet absorption spectra of mono-derivatives of naphthalene containing the groups CH3, Cl, ...
Tópico(s): Spaceflight effects on biology
1926 - Nature Portfolio | Nature
Enrico Simonetto, A. Ghiotti, M. Brun, Stefania Bruschi,
... lubricant viscosity and the frictional conditions at the tribo-pairs interface. Saddle-shape magnetic coils, optimized by ... by superposing different values of electro-magnetic fields. Mono-directional sliding tests were carried out to determine ...
Tópico(s): Tribology and Lubrication Engineering
2022 - Elsevier BV | Wear
Wei‐Ting Chen, Wei‐Chih Wang, Ya-Yu Li,
A magnetic mono-component development system for printers and copiers is comprised with silica particles on the surface of each toner. The silica particles are used as external additives to improve flow ability, to reduce toner aggregation and to modify the tribo-charge characteristics. In most cases, increasing the amount of positive additives to the positive toner result in the ...
Tópico(s): Manufacturing Process and Optimization
2010 - | Technical programs and proceedings/Technical program and proceedings
... resistance against any variation in its thickness. This tribo-surface-modification concept can be applied to surface- ...
Tópico(s): Tribology and Lubrication Engineering
2018 - | Tribology online
H. Ōkubo, Chiharu Tadokoro, Shinya Sasaki,
... by using a reciprocating type cylinder-on-disk tribo-tester (SRV-4). Friction tests were carried out for the tribo-pair of DLC/DLC under lubrication with PAO ...
Tópico(s): Tribology and Wear Analysis
2014 - Japan Society Mechanical Engineers | The Proceedings of Mechanical Engineering Congress Japan
Lovelesh Malav, Praveen Tyagi,
tribology" is a texture of two latin words -"tribo" and "lodgy"."Tribo" refers adding glove and "lazy" data.The Greeks ... of treatment in vehicle business, endless supply of mono layers to nanometer layers or surface of the ...
Tópico(s): Advanced Surface Polishing Techniques
2019 - Rekha Patel | International Journal of Trend in Scientific Research and Development
... the strength of the electric field generated by tribo-charging (surface potential). This depends, principally, on the ...
Tópico(s): Diamond and Carbon-based Materials Research
2009 - ASM International | Journal of Tribology