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Relevant bibliographies by topics / Copper alloy pins

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Academic literature on the topic 'Copper alloy pins'

Author: Grafiati

Published: 4 June 2021

Last updated: 15 February 2022

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Journal articles on the topic "Copper alloy pins"

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Chuprunov, A. G., V. A. Sidorov, I. A. Bilarus, and A. S. Grishaeva. "ANALYSIS OF THE THERMAL STATES OF GLASS-METAL AND CERAMICMETAL TO-PACKAGES UNDER DIFFERENT OPERATION MODES." Electronic engineering Series 2 Semiconductor devices 257, no. 2 (2020): 15–21. http://dx.doi.org/10.36845/2073-8250-2020-257-2-15-21.

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In this paper we present the results of measurements that reveal the dependences between the temperature of pins and pad on the flange of the package and the time factor when pins are subjected to electric current. Measurements were conducted for the KT-97V glass-metal package and the TO 254 ceramicmetal package. Flange of the KT-97V consists of copper, its pins (15 mm long and 1 mm in diameter) are made of MK wire (covar with copper core). Flange of the TO-254 consists of pseudo-alloy of molybdenum and copper, its pins (15 mm long and 1 mm in diameter) are made of copper wire. Measurements we

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Mouda, Pervaz Ahmed, Abdul Azeez, and Siddhi Jailani Hydershah. "Sliding Wear Behavior of Cryogenic Treated Copper Beryllium Alloy." Applied Mechanics and Materials 852 (September 2016): 391–96. http://dx.doi.org/10.4028/www.scientific.net/amm.852.391.

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In this study, the effect of Shallow Cryogenic Treatment (SCT) on the wear behavior of copper beryllium alloy was investigated. The material is subjected to shallow cryogenic treatment to – 80 °C and wear study was conducted on a pin on disc apparatus. The Shallow Cryogenic treated and untreated copper beryllium alloy pins were used against hardened AISI 4140 steel disc. The micro-structural examination was carried out using optical microscope. The hardness was measured using Rockwell hardness tester. The wear track was studied using optical microscope. Microstructure study indicated that the

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Reddy, A. Somi, K. S. S. Murthy, and S. K. Biswas. "Wear and Seizure of Aluminium-Silicon Piston Alloys in Reciprocating Motion against Steel." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 209, no. 4 (1995): 287–96. http://dx.doi.org/10.1243/pime_proc_1995_209_439_02.

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Aluminium-silicon alloy pins were dry slid in unidirectional and reciprocating sliding against steel counterfaces in a normal pressure range of 0.39–26 M Pa and a sliding speed range of 0.6–1.8 m/s. Changing the mode of sliding from unidirectional to reciprocating as well as an increase in reciprocating speed were found to affect wear and seizure resistances adversely. Alloying additions of copper and magnesium to the base metal, on the other hand, were found to improve both of these properties. The temperature rise of the pin during sliding and the mechanical behaviour of the test alloys in c

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ROXBURGH, MARCUS A., and BERTIL J. H. VAN OS. "A Comparative Compositional Study of 7th- to 11th-Century Copper-Alloy Pins from Sedgeford, England, and Domburg, the Netherlands." Medieval Archaeology 62, no. 2 (2018): 304–21. http://dx.doi.org/10.1080/00766097.2018.1535390.

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Shafi, Wani Khalid, Ankush Raina, and Mir Irfan Ul Haq. "Tribological performance of avocado oil containing copper nanoparticles in mixed and boundary lubrication regime." Industrial Lubrication and Tribology 70, no. 5 (2018): 865–71. http://dx.doi.org/10.1108/ilt-06-2017-0166.

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Purpose This paper aims to study the tribological performance of Cu nanoparticles mixed in avocado oil. Design/methodology/approach A Pin-on-Disc tribometer was used to determine the tribological performance of avocado oil as a lubricant as well as for measuring the effectiveness of Cu nanoparticles. Stribeck curve was generated with the base oil and the oil containing Cu nanoparticles. The nanoparticles are added in 0.5 wt. % and 1 wt. % concentration. The worn-out surfaces of aluminum alloy 6061 pins are explored by scanning electron microscopy (SEM). Findings The use of Cu nanoparticles led

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Dizdar, Senad, Yezhe Lyu, Conny Lampa, and Ulf Olofsson. "Grey Cast Iron Brake Discs Laser Cladded with Nickel-Tungsten Carbide—Friction, Wear and Airborne Wear Particle Emission." Atmosphere 11, no. 6 (2020): 621. http://dx.doi.org/10.3390/atmos11060621.

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Airborne wear particle emission has been investigated in a pin-on-disc tribometer equipped with particle analysis equipment. The pins are cut out from commercial powder metallurgy automotive brake pads as with and without copper content. The discs are cut out from a commercial grey cast iron automotive brake disc as cut out and as in addition to a laser cladded with a powder mix of Ni-self fluxing alloy + 60% spheroidized fused tungsten carbide and then fine-ground. Dry sliding wear testing runs under a contact pressure of 0.6 MPa, sliding velocity of 2 m/s and a total sliding distance of 14,4

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Kulesz, Aleksandra, and Jakub Michalik. "Modern Shoe Buckles from Archaeological Research in Gniew and Piaseczno (Pomerania Province, Poland)." Acta Universitatis Lodziensis. Folia Archaeologica, no. 35 (December 30, 2020): 151–65. http://dx.doi.org/10.18778/0208-6034.35.10.

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During archaeological research carried out from 2009 to 2016 in the Church of St. Nicholas in Gniew, a set of three metal buckles was found. Then, in 2017, excavations were conducted in crypts of the Church of the Nativity of the Blessed Virgin Mary in the village of Piaseczno, in the Gniew District. Two other pairs of buckles were uncovered at this site. All the buckles found differ considerably. Thanks to this, one can get an impression that apart from holding the shoe on the foot, they also served decorative purposes. One can distinguish two main types of buckles: those made of iron and tho

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Kostov, Vasil S., Ivan N. Krastev, and Tsvetina Venkova Dobrovolska. "Pattern formation during electrodeposition of copper-antimony alloys." Journal of Electrochemical Science and Engineering 6, no. 1 (2016): 105. http://dx.doi.org/10.5599/jese.235.

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<p class="PaperAbstract"><span lang="EN-GB">Aim of the present study is to establish the conditions of the electrolysis for the preparation of structured and unstressed purple-pink coatings of copper-antimony alloys, including their phase characterization. Also the task of the present investigation is, by changing drastically the metal content in the methanesulfonic electrolyte to find out the conditions of electrolysis where the self-organization of the different phases is expressed by higher-order structures - not only waves but also spirals and targets. The possibility to obtain

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Chen, Hai Yan, Wei Li, Pi Mao Chen, Hai Yan Zhang, and Jie Xiang Lin. "The Corrosion Resistance Properties and Precipitate of Common Artificial Reef Materials." Advanced Materials Research 197-198 (February 2011): 8–12. http://dx.doi.org/10.4028/www.scientific.net/amr.197-198.8.

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The corrosion properties of several common artificial reef materials were studied using electrochemical methods and by measuring corrosion rates in estuary water and seawater. Experimental results show that the 6063 aluminum alloy can be a reef construction material only in low velocity estuary water. Copper in seawater has high corrosion potential and can be passivated, but the high velocity water will destroy the passivation film and decrease the corrosion resistance of copper. Copper is a suitable reef material in low flow seawater and estuary water. With low open potential, high anode curr

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Liang, Chenfan, Yu Wang, Kai Zhang, and Zhijian Peng. "Dry Sliding Behavior of Qbe-2 Beryllium Bronze against 38CrMoAlA Steel in Pneumatic Downhole Motor under Different Loads." Metals 11, no. 3 (2021): 459. http://dx.doi.org/10.3390/met11030459.

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In drilling engineering, the wear of tribo-pairs is the primary cause for the rapid failure of rotating seals in pneumatic downhole tools. In order to reduce the wear of tribo-pairs, a new type of rotating seals was designed in this work, which introduced copper alloys between the stator and rotor. To elucidate the wear and failure mechanism of the copper-steel tribo-pair rotating seals in pneumatic downhole motors, pin-on-disc dry sliding tests with Qbe-2 beryllium bronze pin against 38CrMoAlA steel disc under different loads were thus designed to simulate the friction and wear behavior of su

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Dissertations / Theses on the topic "Copper alloy pins"

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Caple, Christopher. "An analytical appraisal of copper alloy pin production: 400-1600 AD : the development of the copper alloy, pin industry in Britain during the post-Roman period, based on analytical, metallographic and typological examination with consideration of historical and archaeological archives." Thesis, University of Bradford, 1986. http://hdl.handle.net/10454/3423.

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Book chapters on the topic "Copper alloy pins"

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Hinton, David A. "Kings and Christianity." In Gold and Gilt, Pots and Pins. Oxford University Press, 2005. http://dx.doi.org/10.1093/oso/9780199264537.003.0008.

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New discoveries play a major part in archaeological research, but coincidence can also have a role. When four copper-alloy scabbard-studs with Style II ornament were excavated in the smith’s grave at Tattershall Thorpe in 1981 (Fig. 2.18), they were the first of their kind to have been found in England, despite being well known on the continent, where they are dated to between 640 and 670. Within a couple of years, however, another set turned up, on a scabbard in a cemetery in Buttermarket, Ipswich, Suffolk. Then, in 1999, yet another set was found, in a grave at the new football stadium in Southampton, Hampshire (Fig. 3.1). These studs adorned scabbards that were not for double-edged swords, but for the single-edged long seax, not a very practical weapon, but one that was probably used in hunting and was therefore redolent of aristocratic practice. At Tattershall Thorpe the studs were not attached to anything, and were presumably going to be shown to a prospective patron with a view to reuse. At Ipswich and Southampton both sets were in cemeteries at what were about to become major trading-places, Gippeswic and Hamwic. These wic sites had continental counterparts and suggest new ways of organizing and systematizing exchanges of goods; others in England were London, Lundenwic, and York, Eoforwic, both former Roman towns, with the wics outside the walls but episcopal churches inside. Neither Ipswich nor Southampton had a major church, so there was no reason for important burials at either unless they were of people involved in the places’ emergence as commercial centres. One explanation is that some of the graves were for kings’ ‘reeves’ and their families, royal agents placed to oversee merchants and to ensure that tolls were paid, who were buried slightly away from where the commerce was to take place. The Southampton cemetery had other signs of an elite presence, such as a woman’s grave that contained a gold pendant with garnets and Style II animals in filigree gold wire on it (Col. pl. C.2), which seems likely to be mid- to later seventh-century.

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Hinton, David A. "Feudal Modes." In Gold and Gilt, Pots and Pins. Oxford University Press, 2005. http://dx.doi.org/10.1093/oso/9780199264537.003.0011.

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The trend away from ornamented brooches, rings, and swords that demonstrates changing social pressures and expression during the eleventh century was maintained in the first half of the twelfth. The Anglo-Norman aristocracy had considerable wealth for its castles and churches, but the spending power of the Anglo-Saxon majority was very much diminished by the impositions that followed the Conquest. Social relations among the former were based primarily on land, and although sentiments of personal loyalty were defined by oaths of fealty, there is no record of gift-giving from lord to retainer other than the increasingly formalized bestowal of arms. Towns were growing both in size and number, but only a few merchants were really rich, and the peasantry in the countryside was increasing in number but had decreasing opportunity for individual advancement. Excavations at castles and other baronial residences generally yield the evidence of martial appearance and activity that would be expected, like spurs, and slightly more evidence of wealth, with coins a little more profligately lost, than at other sites. There are also luxuries like gilt strips, from caskets of bone or wood, and evidence of leisure activities, such as gaming-pieces; chess was being introduced into western Europe, and appealed to the aristocracy because it was a complicated pastime that only the educated would have time to learn and indulge in. Furthermore, it could be played by both sexes, though ladies were expected to show their inferior skill and intelligence by losing to the men; it echoed feudal society and its courts; and it could be played for stakes. An occasional urban chess-piece find, not always well dated, shows that a few burgesses might seek to emulate the aristocracy. Other predominantly castle finds include small bone and copper-alloy pins with decorated heads that have been interpreted as hairpins, as at Castle Acre, attesting a female presence, but other personal ornaments are infrequent. Some pictures in manuscripts suggest that in the early twelfth century the highest ranks of the aristocracy were wearing brooches. These were probably conventional representations, however, as there are no valuable brooches or finger-rings in the archaeological record, as there had been earlier.

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Brück, Joanna. "Object biographies." In Personifying Prehistory. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198768012.003.0006.

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In September 1886, John and Richard Mortimer excavated a large barrow at Garton Slack, East Yorkshire (Mortimer 1905, 229). At the centre of the barrow lay the inhumation burial of a young adult male. A flint knife, a clay button, and two lumps of yellow ochre had been arranged behind his head; at his left hand were two quartz pebbles and fragments of two boar’s tusks, while the scapula of a pig had been laid on top of his ribs. One detail of this burial seems particularly alien to contemporary eyes, however. When the body had begun to decompose, his mandible was removed and placed carefully on his chest, and a miniature Food Vessel inserted into his mouth. Here, a pot replaced an element of the human self and the physical boundary between person and object was elided: the open mouths of both pot and body worked as channels through which relationships flowed in processes of communication and commensality. This chapter will explore the relationship between people and objects in the Bronze Age. The Bronze Age saw the introduction of new technologies, notably metalworking, which had a significant impact on concepts of personhood and identity. A greater diversity of materials was employed than in previous centuries, including visually striking substances such as amber and faience, while more ‘mundane’ materials such as bone were used to make a new and wider variety of objects, particularly during the later part of the period. Such objects were incorporated into new contexts too, notably settlements and burials, and our interpretation of these finds—especially those from burials and hoards—has had a significant impact on our understanding of the period. We will start by examining objects from Early Bronze Age contexts, focusing in particular on burials, before moving on to consider what technologies such as metalworking and cloth production can tell us about the construction of concepts of the self in the Middle and Late Bronze Age. During the early part of the period, artefacts such as copper-alloy daggers, bone pins, pottery vessels, and stone tools were buried with the dead.

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Conference papers on the topic "Copper alloy pins"

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Payton, Lewis N. "Friction Stir Welding of Aluminum 6061-T6 and Multi-Purpose Copper 11000 Alloy." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-71411.

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Friction Stir Welding (FSW) is a solid-state joining process invented by The Welding Institute (TWI, United Kingdom) in 1991 in partnership with the National Aeronautics Space Agency. The process is emerging as one of the preferred alternative methods to permanently join materials that are difficult to join with traditional fusion methods (e.g., MIG, TIG, etc.). The welding of various copper alloys to various aluminum alloys is of great interest to the nuclear industry and the electrical distribution industry. The very different melting points of these two alloys preclude traditional fusion we

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McCracken, Steven L., and Nick Mohr. "Code Case N-822 for Pin Brazing Non-Structural Attachment Tabs for Buried Pipe Cathodic Protection." In ASME 2018 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/pvp2018-84897.

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Cathodic protection (CP) is one of the primary methods to protect buried piping and pressure components from corrosion and is a critical element in asset management of buried piping at nuclear power plants. Implementation of cathodic protection requires non-structural attachments to the buried piping for electrical leads and connections. The method of attaching copper-copper alloy CP leads to carbon steel piping and components using traditional arc welding processes can be difficult and time consuming. A two-step process is frequently used where a carbon steel weld tab is first welded to the p

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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 format

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Zushi, Kouji, Kenji Sakai, Hiroyuki Sugawara, and Hideo Ishikawa. "Development of Lead Free Copper Based Alloy for Piston Pin Bushing Under Higher Load Engines." In SAE 2006 World Congress & Exhibition. SAE International, 2006. http://dx.doi.org/10.4271/2006-01-1105.

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Ramesh, C. S., and T. B. Prasad. "Tribological Friction and Wear Behaviour of Graphite-Carbon Short Fiber Reinforced Al-17Si Alloy Hybrid Composites." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-67113.

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Graphite and carbon short fiber (Copper coated) reinforced (2 wt%) hypereutectic Al-17%Si alloy composites were prepared by liquid metallurgy route. Room temperature friction and wear properties of as cast hypereutectic Al-Si alloy reinforced with copper coated graphite and short carbon fibers were investigated both before and after heat-treatment. Friction and wear tests were conducted using a pin-on-disc machine under dry conditions. The loads were varied from 10 to 50N respectively. Results reveal that coefficient of friction and wear rate of the hybrid composite are lower than that of the

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Gan, Yong X. "Modeling the Flow and Distribution of Nanoparticles in Friction Stir Processed Polymeric Composite Materials." In ASME 2008 International Manufacturing Science and Engineering Conference collocated with the 3rd JSME/ASME International Conference on Materials and Processing. ASMEDC, 2008. http://dx.doi.org/10.1115/msec_icmp2008-72049.

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Friction stir processing is an advanced manufacturing process in which a specially designed rotating pin is first inserted into the adjoining edges of the materials to be processed with a proper tool tilt angle and then move all along the adjoining edges. The pin produces frictional and plastic deformation heating in the processing zone. As the tool pin moves, materials are forced to flow around the pin. Material flows to the back of the pin, where it is extruded and forged behind the tool, consolidated and cooled under hydrostatic pressure conditions. The primary research about friction stir

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Velukkudi Santhanam, Senthil Kumar, Jeffrin Michael Gnana Anbalagan, Shanmuga Sundaram Karibeeran, Dhanashekar Manickam, and Ramaiyan Sankar. "Multi Response Optimization of Friction Stir Processing Parameters on Cryo-Rolled AZ31B Alloys." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-23198.

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Abstract Friction stir processing (FSP) method is a solid-state technique used for microstructural alteration and enhancing mechanical properties of sheet metals and as-cast materials. Aluminium, brass, copper, steel, tin, nickel, magnesium and titanium are the widely used materials in friction stir processing. Even though magnesium has low density compared to aluminium, only few reports are made on magnesium. Two stage of process was carried out on the experiment to obtain fine grain refinement and improved strength. First, Cryo-rolling processing on 6mm thickness AZ31B alloy at constant roll

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KC, Pratik, Sangeet Shrestha, Adarsh Radadia, Leland Weiss, and Arden Moore. "Design and Performance of Novel Low-Profile Heat Sinks Created Through Additive Manufacturing." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-66320.

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Traditional thermal management techniques such as air-cooled plate- and pin-fin heat sinks are today being pushed to their limits by the increasing power densities of computing hardware (power supplies, controllers, processors, and integrated circuits). In comparison, direct immersion cooling within an alternative cooling medium such as commercial dielectric fluids offers the ability to handle high power densities while also accommodating tighter printed circuit board spacing. Together, these attributes are critical to facilitating higher computing densities. However, this type of high density

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