Relevant bibliographies by topics / Testes pin-on-disc

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Testes pin-on-disc'

Author: Grafiati
Published: 9 September 2021
Last updated: 18 February 2022

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Journal articles on the topic "Testes pin-on-disc"

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Dzierwa, Andrzej, Pawel Pawlus, Wieslaw Zelasko, and Rafal Reizer. "The Study of the Tribological Properties of One-Process and Two-Process Textures after Vapour Blasting and Lapping Using Pin-on-Disc Tests." Key Engineering Materials 527 (November 2012): 217–22. http://dx.doi.org/10.4028/www.scientific.net/kem.527.217.

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Wear tests were conducted using a pin-on-disc tester. In the experiment, a steel disc of hardness 40 HRC was put in contact with a steel pin of hardness 64 HRC with spherical end. Disc samples were prepared in order to obtain very similar values of the Sq parameter of one-process and two-process isotropic surfaces. Height of one–process disc surfaces, characterized by the Sq parameter was in the range 0.5 – 6 µm, but of two-process textures 1- 4.5 µm. Dry and lubricated tests, using different contact conditions were carried out. During testing, the friction force was monitored as a function of time. Wear of disc was measured after the test using white light interferometer. Tests under boundary lubrication condition were done using L-AN 46 oil.
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Kaur, Rita G., C. F. Higgs, and Hooshang Heshmat. "Pin-on-Disc Tests of Pelletized Molybdenum Disulfide." Tribology Transactions 44, no. 1 (January 2001): 79–87. http://dx.doi.org/10.1080/10402000108982429.

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Andersson, Peter. "Water-lubricated pin-on-disc tests with ceramics." Wear 154, no. 1 (April 1992): 37–47. http://dx.doi.org/10.1016/0043-1648(92)90241-y.

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Syahrullail, Samion, Ahmad Mohd Azmi, Norzahir Sapawe, and Amir Khalid. "Wear Characterization of Aluminum Lubricated with Palm Olein at Different Normal Load." Applied Mechanics and Materials 554 (June 2014): 401–5. http://dx.doi.org/10.4028/www.scientific.net/amm.554.401.

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The pin-on-disk tester is a method used for investigating wear. The sliding mechanism between the pin and the disc experimentally creates wear. In this paper, the wear characteristics of an aluminium pin sliding on an SKD11 disc lubricated with double fraction palm olein were investigated. The pin was made from pure aluminum A1100. The results were compared with those of tests in which the disc was lubricated with commercial hydraulic oil. In both sets of experimental conditions, the normal load varied from 4 to 10 kg. Rotational speed was set to 1200 rpm. From this study, it was found that different types of lubricant affect the wear progression and friction coefficient during a sliding movement. The wear progression and friction coefficient depend also on the load applied, surface roughness, pressure applied and contact surface area.
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WOŚ, Sławomir, Waldemar KOSZELA, and Paweł PAWLUS. "THE EFFECT OF THE SHAPE OF OIL POCKETS ON THE FRICTION FORCE." Tribologia 280, no. 4 (August 1, 2018): 151–56. http://dx.doi.org/10.5604/01.3001.0012.7556.

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Tests were carried out using a pin-on-disc tester under starved lubrication conditions. To achieve a conformal contact, a special construction was used with an adjustable counter sample. Textured surfaces with two dimple patterns (spiral an radial) and four shapes (circle, oval, triangle, and chevron) were tested. The contact area was lubricated with L-AN-46 oil. Before the tests, surface topographies of the discs were measured by a white light interferometer Talysurf CCI Lite. Tests showed that, in starved lubrication conditions, oil pocket shape and pattern affected the friction force.
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PIOTROWSKA, Katarzyna, Paweł BARANOWICZ, Joanna WYSOKIŃSKA-MISZCZUK, Monika MADEJ, and Monika SKÓRA. "THE TRIBOLOGICAL PROPERTIES OF THE Ti6Al4V ALLOY WITH NITROGEN ION IMPLANTATION." Tribologia 283, no. 1 (February 28, 2019): 37–47. http://dx.doi.org/10.5604/01.3001.0013.1434.

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The article presents the analysis of the influence of ion implantation on the properties of titanium alloy used in biotribological systems. The object of the study was the titanium alloy Ti6Al4V implanted with nitrogen ions. Tribological model tests were carried out in combination with a sphere with Al2O3 – a Ti6Al4V alloy disc implanted with N+ ions. Experimental friction tests were carried out on pin-on-disc testers in conditions of technically dry conditions and in conditions of lubrication with the Ringer’s solution. The tests on the TRB tester were carried out in a swinging motion, while on the T-01 tester in a sliding movement. Friction coefficient and wear were determined for all tests. Surface morphology testing and chemical composition analyses were performed using the Jeol JSM-7100F scanning electron microscope, equipped with an EDS microanalyzer. Surface geometry measurements prior to and after tribological tests were performed on a Taylor Hobson’s Talysurf CCI contactless optical profilometer. The optical tensiometer was used to determine the contact angles with demineralized water and Ringer’s solution. The tribological tests of the titanium alloy Ti6Al4V lead to the conclusion that implantation of N+ ions results in better tribological properties of the alloy. The best tribological characteristics were obtained for a titanium alloy implanted with nitrogen ions under technically dry friction conditions. The influence of the tribological system on Ringer’s fluid influenced the reduction of coefficients of friction in the oscillating movement (Tribometer TRB) and sliding motion (Tester T-01M). In the case of a oscillating movement, higher wear of the tested friction pair was observed under friction conditions with the Ringer solution lubrication.
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Dzierwa, Andrzej. "Influence of Steel Surface Preparation Method on Topography and Tribological Behaviour in Dry Sliding Conditions." Key Engineering Materials 674 (January 2016): 265–70. http://dx.doi.org/10.4028/www.scientific.net/kem.674.265.

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Tribological tests were conducted using a pin-on-disc tester. In the experiment, a steel disc of hardness 40 HRC was put in contact with a steel ball of hardness 62 HRC. Disc samples were prepared in order to obtain very similar values of the Sa parameter, smaller than 0.5 μm. Different methods of preparing smooth surfaces were used. Dry tests using similar contact conditions were carried out. During tests, the friction force was monitored as a function of time. Wear of discs and balls was measured after the test using white light interferometer. In order to decrease variation of the experimental results, during tests the wear debris was continuously removed from the disc surface. It was shown that type of treatment play a role on tribological behavior of sliding pairs.
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Chen, Wei, and Yi Min Gao. "Tribological Characteristics of Si3N4-HBN Ceramic Materials for Dry Application." Applied Mechanics and Materials 217-219 (November 2012): 146–52. http://dx.doi.org/10.4028/www.scientific.net/amm.217-219.146.

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Using air lubricants, wear tests of Si3N4-hBN composites with different hexagonal boron nitride (hBN) volume fraction sliding against Si3N4ceramic were carried out on a MMU-5G type pin-on-disc tester. For comparison, Si3N4/Si3N4pairs were also tested under the same conditions. The worn surfaces of specimens were observed under scanning electron microscope (SEM). Furthermore, the wear debris were analyzed by using X-ray diffraction (XRD). Wear debris layers are formed on the wearing surface when Si3N4-hBN composites slide against Si3N4ceramic under air lubrication. In this situation, the friction coefficients are as high as 0.80-1.20 and the wear coefficients are above 10-5 mm3/Nm for all materials tested.
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Nosko, Oleksii, Takuo Nagamine, Hiroki Mori, and Yuichi Sato. "Friction-Induced Oscillations of a Non-Asbestos Organic Pin Sliding on a Steel Disc." Acta Mechanica et Automatica 9, no. 2 (June 1, 2015): 84–88. http://dx.doi.org/10.1515/ama-2015-0014.

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Abstract Friction-induced oscillations result in deterioration of performance of disc brakes and are generally undesired. We conduct experimental study of friction-induced oscillations in a non-asbestos organic material / steel pair used in disc brakes of motor vehicles. The tests are done by use of a pin-on-disc machine in which the pin sample is supported on a deformable beam. The adjustable friction parameters are the disc velocity, contact pressure and temperature. The tests show that the friction coefficient decreases with the sliding velocity and increases with the temperature. The friction-induced tangential oscillation of the pin sample occurs with a frequency equal to the first natural frequency of the beam. The effects of the disc velocity and temperature on the oscillation characteristics are investigated. The oscillation amplitude increases with the disc velocity on the interval of velocities below 2 m/s. Temperature changes of several tens of degrees Celsius lead to the oscillation occurrence / decay. The obtained results can be useful for prognostication of friction-induced oscillations in disc brakes with non-asbestos organic pads.
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WOŚ, Sławomir, Waldemar KOSZELA, and Paweł PAWLUS. "THE EFFECT OF OIL POCKET ARRAYS ON FRICTION COEFFICIENT." Tribologia, no. 4 (August 31, 2017): 97–105. http://dx.doi.org/10.5604/01.3001.0010.6037.

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Experiments were carried out using pin-on-disc tester in conformal lubricated contact conditions for different normal loads. Surface texturing was done using abrasive jet machining with the application of laser cut mask. In order to eliminate the effect of different input variables in all the experiments, pit-area ratio and sizes of oil pockets were very similar. Five types of oil pocket arrays were tested: radial, concentric, spiral, of a square arrangement, and of a random arrangement for 5% and 17% of pit-area ratio. Different dimple diameters caused various oil pocket densities. The experiments were also made for untextured polished discs. During tests, the friction force was monitored as a function of time. Before and after tests, disc surface topography was measured using a white light interferometer Talysurf CCI Lite. The beneficial effect of surface texturing was obtained for spiral arrays of dimples on disc surface. The presence of a radial array of oil pockets resulted in the worst tribological properties of tribological assemblies containing textured discs.
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Dissertations / Theses on the topic "Testes pin-on-disc"

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Růžička, Jakub. "Přizpůsobení ohřívatelného tribometrického nástroje pro sériové zkoušky." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-231040.

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This Paper deals with a design of tribometer for pin-on-disc and disc-on-disc tests. The purpose of these tests is Investigation of friction coefficient during hot forming. The main emphases of this paper are tool heating and quick tool change. The conductive sample heating is analyzed with FEM software Ansys and the results of this snalysis are taken into design consideration. Existing pin mounting design is considered as satisfying. Various disc mounting concepts are compared. The best solution - specimen mounting by an inside clamping cone with integrated specimen ejector was manufactured (heating excluding) and successfully tested.
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Fernandes, Graciliano Pereira. "Aplicação da tribologia na pesquisa e desenvolvimento de materiais para embreagens automotivas: estudo do atrito e do desgaste com foco na origem do desenvolvimento, estabilidade e deterioração do tribofilme." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/3/3151/tde-23062016-115213/.

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Para transmitir o torque gerado pelo motor de combustão interna para a caixa de transmissão por meio da embreagem, seja em automóveis ou caminhões, é necessário que haja contato por deslizamento entre um material polimérico multifásico e um contracorpo metálico de ferro fundido cinzento. Além disso, os níveis do coeficiente de atrito entre esses materiais têem que ser suficientemente alto e estável, para proporcionar uma transmissão de torque regular e eficiente. Porém, durante o deslizamento, materiais são transferidos de uma superfície para outra, e alterações microestruturais e fisico-químicas ocorrem. Como consequência, uma nova superfície (denominada de tribofilme) se desenvolve, influenciando o desempenho funcional da embreagem. Dessa forma, compreender as suas características tem se tornado essencial para desenvolver sistemas de embreagens cada vez mais eficientes. No entanto, muitos ensaios são necessários para que se possa entender como uma ou várias matérias primas se comportam em relação aos aspectos tribológicos. Isso faz com que surja a necessidade de repetir os ensaios inúmeras vezes, para que se façam as escolhas mais assertivas tanto das matérias primas quanto dos processos envolvidos. Como alternativa, para reduzir tempo e custos, e ter um maior controle sobre as variáveis de ensaio, busca-se simular em laboratório, com equipamentos mais simples, a reprodução das interações tribológicas em condições reais. A primeira fase deste trabalho tem como objetivo apresentar os mecanismos de desenvolvimento do tribofilme para três níveis de severidade em condições reais de aplicação (ensaios mais demorados, complexos e mais caros, devido à necessidade da confecção completa dos protótipos), e posteriormente correlacionar esses mecanismos com os que foram simulados por meio de ensaios conduzidos num tribômetro de laboratório do tipo pino-disco (ensaios mais rápidos e mais simples, consequentemente menos complexos), variando o PV de 3,08 até 11,08 MPa ms-1. Foi constatado que as características do tribofilme dependem da severidade da aplicação. Além do que, o tribômetro pino-disco (amostra de 13 mm de diâmetro externo) consegue reproduzir os mecanismos identificados em campo, pois houve paridade na transferência das características do tribossistema do modelo de ensaio para o da condição real (430 mm de diâmetro externo). Na segunda fase, diferentes séries de ensaios tribométricos foram realizadas para investigar a influência do tribossistema no desempenho funcional do par tribológico (atrito e desgaste). Para os ensaios tradicionais, foi constatada um aumento na taxa de desgaste para temperaturas superiores a 250°C, revelando uma transição no regime moderado de desgaste para o severo. Quando os debris de desgaste foram removidos do meio interfacial, o nível do coeficiente de atrito aumentou e a taxa de desgaste reduziu. Já a adição de debris de desgaste ao meio interfacial contribuiu para aumentar a taxa de desgaste e reduzir drasticamente o nível do coeficiente de atrito. No entanto, quando os ensaios foram realizados empregando discos pré-condicionados, a taxa de desgaste e o nível do coeficiente de atrito foram otimizados, principalmente em níveis de severidade mais elevados (PV 10,09 MPa ms-1) indicando potencial ganho na eficiência do sistema embreagem.
Torque from an internal combustion-engine to a gear box, either in automobiles or trucks, is transmitted by a clutch system. In order to transmit torque from one side to the other, sliding contact between a multiphase friction material and a gray iron rotor is necessary. Torque transmission depends on the friction level among the tribological couples, and it have to be relatively high and most importantly stable to allow an efficient and regular performance. During the sliding between the coupling surfaces, material is transferred from one surface to the other causing microstructure and chemical changes. As consequence, a new surface, also known as tribofilm, is developed. This surface governs the clutch system performance and understanding the tribofilm characteristics is very important to improve the development of efficient clutch systems. For this, a large number of tests are necessary to understand the tribological behavior of the raw materials. Such investigation is highly empirical and in order to have a consistent data it\'s necessary to carry out several friction tests repetitions. Alternatively, to save time and money, and have better control over the test variables, the real tribological interactions can be simulated in laboratory by using simple equipment, pin-on-disc tribometer. The simplicity of this device allows evaluating a larger number of alternative materials. The first part of this work aims to investigate the tribofilm development mechanisms in three severity levels on the field application (those tests are more time-consuming, complex and expensive, because it is necessary to produce the entire prototype), and then correlate these mechanisms with those simulated in a pin-on-disc tribometer (faster and simpler test) by changing the PV level from 3.08 to 11.08 MPa ms-1. It was found that the tribofilm characteristics depend on the severity of application. In addition, the pin-on-disc tribometer (sample of 13 mm outside diameter) can reproduce the same mechanisms that were identified on the field, due to the parity between the tribosystem characteristics of test model and field condition (430 mm external diameter). In the second part of this work, different series of tribometer tests were performed to investigate the influences of tribosystem on tribological couple performance (friction and wear). Standard tribometer tests presented an increasing in the wear rate at temperatures of 250°C, revealing a transition from moderate to severe wear regime. When wear debris were removed from the interfacial contact, the friction coefficient level increased and wear rate reduced. On the other hand, when the wear debris were added, it contributed to increase the wear rate and to reduce the friction level dramatically. However, when the experiments were performed by using pre-conditioned discs, the wear rate and friction coefficient level has been optimized, particularly at higher severity levels (PV 10.09 MPa ms-1).
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Fořt, Tomáš. "Charakterizace nanostruktur deponovaných PVD a CVD technologiemi." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-233449.

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The thesis deals with mechanical properties of thin hard wear-resistant coatings. The work presents a method of dynamic testing of thin hard coatings on a newly constructed prototype of impact wear tester. It provides a comparison with standard methods of layer testing and presents new experimental results of dynamic impact wear test of the coatings. Finally, the thesis covers preparation techniques of thin film systems deposited on various substrates and their characterization using optical and electron microscopy.
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Mousinho, Miguel Alexandre Ferreira. "Estudo do comportamento ao desgaste de uma engrenagem helicoidal." Master's thesis, 2017. http://hdl.handle.net/10362/27860.

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Esta dissertação teve como base o estudo de causas de desgaste de uma engrenagem mecânica de dentes helicoidais. Inicialmente, foi efetuado um levantamento do Estado de Arte, com uma introdução sobre engrenagens, o seu processo de fabrico e seus defeitos associados e as principais causas de falha em engrenagens e onde é aprofundado as suas características e estudos feito. Na parte experimental foram incluídos os processos tecnológicos de preparação das amostras a partir de peças reais, em aço DIN 16MnCr5, do par de engrenagens helicoidais. Este par de engrenagens apresentava problemas de fraturas dos dentes. Com o intuito de esclarecer as causas de fratura, foram realizados ensaios de micro dureza Vickers e executado um estudo aprofundado de duas zonas do material em questão: análise de dureza do material que compõe o corpo da engrenagem e análise da dureza dos dentes na zona de cabeça do dente (zona de contacto) e estudo da dureza ao longo do perfil do dente. Foi efetuado também um estudo da distribuição de defeitos de fabrico em profundidade, em 4 amostras da engrenagem, onde foram feitas contagem do número de defeitos, e respetivas áreas, através de tratamento de imagens obtidas por microscópio ótico invertido. Por último, foram efetuados ensaios de desgaste no material e caracterizado o seu comportamento ao desgaste a seco e com lubrificante usado, com recurso a uma máquina de testes pin-on-disc.
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Book chapters on the topic "Testes pin-on-disc"

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Andersson, Peter. "Pin-on-Disc Tests with Ceramics in Air and Aqueous Media." In 4th International Symposium on Ceramic Materials and Components for Engines, 1240–47. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2882-7_139.

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Aherwar, Amit, Amit Singh, Amar Patnaik, and Deepak Unune. "Selection of Molybdenum-Filled Hip Implant Material Using Grey Relational Analysis Method." In Handbook of Research on Emergent Applications of Optimization Algorithms, 675–92. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-2990-3.ch029.

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In this study, a series of implant material containing molybdenum of different weight percentages were fabricated via high temperature vertical vacuum casting induction furnace and examined their physical, mechanical and wear properties. The mechanical properties were tested by the micro-hardness tester and the compression testing machine, while the wear performance was analyzed through a pin-on-disc tribometer under different operating conditions at room temperature. Density, hardness, compressive strength and sliding wear were considered as criterions for this study. The proportions of alternatives consist of Co-30Cr as a base material and molybdenum as an alloying element which was varied from 0 to 4wt.%. Due to the conflict between the properties obtained, the Grey relational analysis method (GRA) was applied to choose the best material among the set of alternatives. From the results obtained, it was found that Co-30Cr implant material containing 4wt.%molybdenum provides the best combination of the properties for a given application (i.e. hip femoral head).
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Powell, M. L., J. B. Medley, and R. Varano. "Metal-metal cervical disc implants: A material investigation using pin-on-plate tests." In Life Cycle Tribology, 845–52. Elsevier, 2005. http://dx.doi.org/10.1016/s0167-8922(05)80087-2.

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Kano, Makoto, Yoshiteru Yasuda, Yutaka Mabuchi, Jiping Ye, and Shozaburo Konishi. "Ultra-low friction properties of DLC lubricated with ester-containing oil —Part 1: Pin-on-disc & SRV friction tests—." In Tribology Series, 689–92. Elsevier, 2003. http://dx.doi.org/10.1016/s0167-8922(03)80096-2.

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Gnanasekaran, S., Samson Jerold Samuel Chelladurai, G. Padmanaban, and S. Sivananthan. "Microstructural and High Temperature Wear Characteristics of Plasma Transferred Arc Hardfaced Ni–Cr–Si–B-C Alloy Deposits." In Liquid Metals [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.98622.

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Due to the tough working environments, wear damage to nuclear reactor components is frequent. Usually, nuclear elements run at 573 k to 873 k. The feed water controller valves, used for the thundering of coolant flow, wear out faster among the reactor components. Austenitic stainless steels, using different methods for hardfacing, improve wear resistance to the cobalt and nickel alloys. Nickel based hardfacing is more resistant to wear than cobalt based hardfacing at high temperatures thanks to the solid oxide layers. Austenitic stainless-steel substrates generally favor nickel-based hardfaced (Ni–Cr-Si–B-C) over cobalt-driven hardfacing because this reduces radiation-induced nuclear activity. A well-known surface method for depositing nickel hardfacing, minimal dilution, alloys is the Plasma Transfer Arc (PTAs) weld technique. In this study the Ni-based alloy is hardfaced over a 316 L (N) ASS substratum with PTA hardfacing, for a dense of approximately 4–4.5 mm. The substrates and deposits were tested at different temperatures with a pin on disc wear (room temperature, 150 and 250°C).When grinding with 1000 grain SiC abrasive paper, the wear test samples were polished to the roughness value (Ra) of less than 0,25 m.The deposit showed a variety of wear mechanisms regarding the test temperature. Using friction and wear values and wear analysis, the wear mechanisms were determined. There was a considerable wear loss at room temperature (RT).At 423 K operating heat, mild ploughing at short sliding distances and tribo-oxidation were carried out with increasing sliding time.The primary wear mechanism was adherence at the time of operating temperature at 623 K, but as the sliding distance widened, tribo-oxidation improved. In combination with a working hardened substrate, the formation of an oxide layer could significantly reduce the wear loss of nickel-based alloys.
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Conference papers on the topic "Testes pin-on-disc"

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Vogel, Alexander, and Georg-Peter Ostermeyer. "Adaptronic Actuator to Minimize the Pins Misalignment on Pin-on-Disc Testers." In Brake Colloquium & Exhibition - 36th Annual. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2018. http://dx.doi.org/10.4271/2018-01-1892.

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Ostermeyer, Georg Peter, and Alexander Vogel. "Principal Measurement Inaccuracies of Pin-on-Disc Testers and Associated Mitigation Efforts." In Brake Colloquium & Exhibition - 35th Annual. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2017. http://dx.doi.org/10.4271/2017-01-2497.

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Ostermeyer, Georg-Peter, and Alexander Vogel. "On Short-time Measurements of Friction and Wear with a Self-adjusting Pin-On-Disc Tester." In EuroBrake 2020. Stansted, UK: FISITA, 2020. http://dx.doi.org/10.46720/eb2020-fbr-034.

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Shivamurthy, R. C., and M. K. Surappa. "Characteristics of Tribolayers Observed in A356 Al Alloy — SiCP Composite Discs/Brake Pad During Sliding Wear Tests." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-64040.

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Tribological characteristics of A356 Al alloy-10 vol. % SiCP composite discs/brake pad has been studied under dry sliding conditions at sliding speeds in the range 2 to 5 m/s and at loads in the range 1–3 MPa. In these tests, disc of Al MMCs and pin of friction pad made of polymer based composite were used. Wear rates of Al MMC disc as calculated by weight loss method, found to be negative at high sliding speed and high load. Worn surface of disc has been analyzed using EDAX. SEM analyses of worn surfaces of composite disc infer transfer of material from pin to the disc resulting in the formation of tribolayers. Two types of tribolayers were observed on the worn surface, one having shiny appearance of copper rich layer and other is dark in colour consisting of Mg, S, Fe, Ba, Ca, Si, Cu, In and Al. In the later layers were rich in copper and appear as bright patchy layers under SEM. Coverage of copper rich layers increase all along and across the worn track at a sliding speed of 4 and 5 m/s in the load range 2 to 3 MPa. Atomic percent of copper increase with load and consequently affect the wear rate of disc. EDAX analysis of dark tribo layers on wear track of composite disc show continuous increase in the amount of Cu and Ba with increase in speed and load. Hence, wear rate of composite discs were relatively low under all test conditions. These results clearly indicate composition of friction material having profound influence on the wear rate of Al MMC discs.
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Buehler, Jane E., and K. Dean Bowles. "Comparative Study of Unprotected vs. Protected Surfaces Using an Innovative Process for Applying Solid Lubricants to Reduce Friction and Wear." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-82817.

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Two tribocouples were compared neat vs. treated with Induratec™. The tribocouples, tested under dry sliding conditions via a pin-on-disc tribometer, were 52100 steel ball on 52100 steel disc and 8620 steel pin on C67300 bronze disc. Comparisons of coefficient of friction and wear coefficient, K (mm3/N m) are presented. For the 52100 tribocouple two test conditions were completed, a 9.8 N load at 0.75 m/s and a 29.4 N load at 2.0 m/s. The coefficient of friction, for the treated samples compared to the untreated samples, was reduced by 74% for the lower load and speed condition and by 79% for the higher load and speed condition. For the lower load and speed test condition, the wear coefficient was reduced by a factor of 55 and for the higher load and speed condition the wear coefficient was reduced by a factor of 887. For the 8620 steel pin on C67300 bronze disc, two test conditions were completed, a 9.8 N load at 2.5 m/s sliding speed and a 19.6 N load also at 2.5 m/s sliding speed. The treated surface had a 42% lower coefficient of friction at the 9.8 N load and a 57% lower coefficient of friction at the 19.6 N load. The treated tribocouple wear coefficient was reduced by a factor of 600 for the 9.8 N load and by a factor of 1733 for the 19.6 N load.
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Zheng, Liangjie, Biao Ma, Man Chen, Heyan Li, Chengnan Ma, and Liang Yu. "Friction and Wear Behaviors of Porous Paper-Based Friction Pairs in Wet Clutches by Pin-on-Disc Tests." In International Conference on Fluid Flow and Thermal Science (ICFFTS'20). Avestia Publishing, 2020. http://dx.doi.org/10.11159/icffts20.103.

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Quintelier, J., P. Samyn, P. De Baets, and J. Degrieck. "Tribological Behaviour of GFR Polymer Composites." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-63357.

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On a Pin-on-Disc test rig with composite disc and steel pin tribological experiments were done on pultruded glass fiber reinforced polymer matrix composites plates. The wear and frictional behavior strongly depends on the structure. Also the normal load plays an important role in the frictional behavior, which is of greater importance than the speed. The formation of a thin polymer film onto the wear track results in a lowering of the coefficient of friction with 20%.
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Nogi, Takashi. "Some Tribological Properties of an Ionic Liquid." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-63326.

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Some tribological properties of an ionic liquid were investigated by using a pin-on-disc friction and wear tester. Due to running-in, the coefficient of friction of the ionic liquid decreased with time to a very low value of 0.02 which suggests that the lubrication regime was hydrodynamic at the end of the tests. Anti-wear performance of the ionic liquid was substantially comparable to a paraffin-based oil.
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Iliev, Christo. "On the Wear Measurement and Calculation in Ball on Disc Test." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-63191.

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The pin on disc test configuration is widely used in laboratory friction and wear testing of materials. The variant configuration ball on disc offer an advantage of the ball being self-aligned with respect to disc. Also, usage of ball allows for higher accuracy of wear measurement compared to ball weight loss evaluation.
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Ye, Jiping, Kenichi Ueoka, Makoto Kano, Yoshiteru Yasuda, Yusuke Okamoto, and Jean Michel Martin. "Super Low Friction Property of DLC Lubricated With Ester-Containing Oil: Part 2 — Nanometer-Scale Morphological, Structural and Frictional Properties." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-63921.

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We have succeeded for the first time anywhere in lowering the friction coefficient of a diamond-like-carbon (DLC) coating to less than 0.01 under boundary lubrication in engine oil [1–3]. This anomalous super-lubrication behavior has been observed for a hydrogen-free DLC-coated (ta-C) disc in an ester-containing oil but not for a hydrogenated DLC (a-C:H) coating. It is thought that some chemical adsorbent may form only on the ta-C sliding surface due to some tribochemical reactions. Our recent studies have suggested that the macro-scale reduction of friction is dependent on nanometer-scale tribological properties [4–6]. The superlow friction behavior seen in a pin-on-disc friction test was taken as the object of this investigation with an eye toward elucidating the mechanism of the anomalous friction reduction. Pin-on-disc tests were conducted by sliding a ta-C/ta-C pair in the presence of poly alpha-olefin based oil containing a modifier additive of glycerol monooleate ester (PAOES1 oil). Nanometer-scale tribological properties were investigated by using atomic force microscopy (AFM), the AFM phase-image technique, and nanoscratch measurements. Attention was focused on the differences in surface roughness, nanostructure and nanofriction coefficient between the sliding and non-sliding areas in an effort to find the origin of the super-lubrication behavior.
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