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Dissertations / Theses on the topic 'Copper base alloys'

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Published: 4 June 2021

Last updated: 1 February 2022

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1

CASINI, JULIO C. S. "Influência da substituição do cobalto por estanho e cobre na microestrutura e propriedades elétricas em ligas a base de LaMgAlMnCoNi." reponame:Repositório Institucional do IPEN, 2015. http://repositorio.ipen.br:8080/xmlui/handle/123456789/24068.

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Submitted by Claudinei Pracidelli (cpracide@ipen.br) on 2015-10-28T11:21:27Z No. of bitstreams: 0<br>Made available in DSpace on 2015-10-28T11:21:27Z (GMT). No. of bitstreams: 0<br>Tese (Doutorado em Tecnologia Nuclear)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

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JESUS, SERGIO L. de. "Desenvolvimento e caracterizacao da liga Cu-Ni-Be para fins eletro-eletronicos." reponame:Repositório Institucional do IPEN, 2000. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10828.

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Made available in DSpace on 2014-10-09T12:44:28Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T13:57:11Z (GMT). No. of bitstreams: 1 06874.pdf: 5138428 bytes, checksum: e22d5fad1a78f9c1d2ced36a4c194d23 (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>Dissertacao (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP<br>FAPESP:97/05621-9

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SALGADO, LUCIO. "Processamento da liga ferro-niquel-cobre-molibdenio por moagem de alta energia." reponame:Repositório Institucional do IPEN, 2002. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11056.

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Made available in DSpace on 2014-10-09T12:47:35Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:08:49Z (GMT). No. of bitstreams: 1 08280.pdf: 6192071 bytes, checksum: 8b416b6373619895be5ca4e67e02afe0 (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP<br>FAPESP:96/11795-7

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4

Delacour, Pascal. "Etude en microscopie analytique par transmission d'alliages renforcés par oxydation interne et de martensites du système Cu-Al. Importance du coherent bremsstrahlung dans la microanalyse X de ces alliages." Rouen, 1994. http://www.theses.fr/1994ROUES073.

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La première partie de ce travail constitue une étude en MET et en EDS de l'évolution des précipités formés par oxydation interne d'un alliage Cu-0,3% Al en fonction de la progression du front d'oxydation provoquée par des traitements thermiques appropriés. L'évolution des précipitations homogènes et hétérogènes a pu être suivie et la composition des précipités a été dans une large mesure identifiée. Au cours de ce travail, les analyses EDX ont montré l'existence de pics qui se sont révélés dus au Coherent Bremsstrahlung. L'importance de ce phénomène, qui peut fausser les analyses nous a condui

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5

Holtmeier, Stefan. "Effets magnétovolumiques dans des composés à fermions lourds CeRu2Si2, CeCu6 et CeNiSn." Université Joseph Fourier (Grenoble), 1994. http://www.theses.fr/1994GRE10117.

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Ce memoire decrit des etudes de dilatation thermique et de magnetostriction effectuees au moyen d'un dilatometre capacitif sur des monocristaux de composes a fermions lourds, entre 0. 2 et 300 k et sous des champs magnetiques allant jusqu'a 11 t. Dans une premiere partie, sont decrits des resultats sur l'alliage ce#0#. #9#8#5y#0#. #0#1#5ru#2si#2, qui completent une etude precedente du compose ceru#2si#2 pur et de l'alliage ce#0#. #9#5la#0#. #0#5ru#2si#2. Leur energie caracteristique obeit a une loi d'echelle. Aucun des de ces trois composes ne presente d'ordre magnetique a longue distance, mai

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6

Keller, Niels. "Étude angulaire du deuxième champ critique dans les supraconducteurs à fermions lourds UPt3, URu2Si2 et CeCu2Si2." Université Joseph Fourier (Grenoble ; 1971-2015), 1994. http://www.theses.fr/1994GRE10119.

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Cette these est consacree a l'etude experimentale du deuxieme champ critique des supraconducteurs a fermions lourds upt#3, uru#2si#2 et cecu#2si#2. La supraconductivite de ces composes, qui est presumee de nature non conventionnelle, est supposee influencer fortement la dependance angulaire du deuxieme champ critique h#c#2 dans le plan basal du compose hexagonal upt#3 et des composes tetragonaux uru#2si#2 et cecu#2si#2. Ainsi, la mesure de la variation angulaire de h#c#2 peut aider a distinguer le type de parametre d'ordre supraconducteur. La variation angulaire de h#c#2 dans le plan basal et

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7

Akdeniz, Mahmut Vedat. "Rapid solidification of zinc based alloys." Thesis, Open University, 1989. http://oro.open.ac.uk/57270/.

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This work presents an investigation into two areas : the development of zinc based brazing alloys for the joining of copper produced by the rapid solidification technique; the study of the development of microstructures in rapidly solidified dilute zinc alloys. A new model has been proposed, based on the present experimental results and the available data from the literature, to account for the ribbon formation mechanism. Within this model ribbon formation in melt spinning is mainly determined by the behaviour of the viscosity in undercooled melts. It has been shown that, contrary to previous

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8

Tarhan, Elif. "Ageing Characteristics Of Copper Based Shape Memory Alloys." Phd thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/3/593541/index.pdf.

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Martensite-to-Beta transformation temperatures of CuAlNiMn and CuAlNi shape memory alloys has been determined by differential scanning calorimetry (DSC). In CuAlNiMn alloys, each new betatizing treatment has resulted in randomly varying transformation temperatures on the same specimen and an anomalously diffuse and serrated Martensite-to-Beta transformation peaks in the first cycle. Therefore, as quenched alloy samples were thermally cycled for three times in DSC prior to ageing to obtain thermally stable and reproducible transformation temperatures and to eliminate the anomalous effect of bet

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9

Souchet, Raphaële. "Etude du rôle du fer et du manganèse lors de l'oxydation d'alliages cuivre-nickel industriels." Rouen, 1994. http://www.theses.fr/1994ROUES020.

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L'étude du rôle du fer et du manganèse lors des premiers stades d'oxydation d'alliages cuivre-nickel industriels de type 90/10 est conduite sur la base d'une confrontation entre deux nuances dont l'une est chargée en ces éléments (1. 2% de fer et 0. 8% de manganèse). Les oxydations sont réalisées pour une gamme de températures comprises entre l'ambiante et 450° C et suivies à l'aide de méthodes d'analyse complémentaires. La spectroscopie de photoélectrons induits par un rayonnement X et la sonde atomique sont utilisées pour les oxydations à basse température (<200° C) alors que les spectroscop

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10

Cayeux, Soline de. "Modification des propriétés superficielles d'un alliage à mémoire de forme par construction en milieu électrochimique de films de polymère." Mulhouse, 1995. http://www.theses.fr/1995MULH0390.

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Le dépôt d'un revêtement sur la surface d'un alliage à mémoire de forme (AMF) est un problème rendu complexe par les déformations mécaniques importantes, réversibles et répétées subies par ces matériaux en cours d'usage (effet mémoire double sens, superélasticité). L'électropolymérisation sous polarisation cathodique a conduit à la construction de films de polyacrylonitrile (PAN) de 100 à 200 m d'épaisseur et de polyméthacrylonitrile (PDAN) de 15 micromètres d'épaisseur chimiquement greffés sur la surface d'un AMF à base de cuivre (Cu-Zn-Al). L'utilisation conjuguée de techniques électrochimiq

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11

Kam, Weng Seng. "Laser surface alloying of copper with Ni-based hardfacing alloys for enhancing hardness and corrosion resistance." Thesis, University of Macau, 2017. http://umaclib3.umac.mo/record=b3691686.

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12

Draou, Khaled. "Oxydation de laitons alpha par plasma inductif d'oxygène à basse pression." Rouen, 1997. http://www.theses.fr/1997ROUES026.

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Le travail présenté vise à améliorer la compréhension des mécanismes d'oxydation des laitons industriels exposés à un plasma d'oxygène basse pression, et la détermination des paramètres du réacteur contrôlant la cinétique d'oxydation de ces matériaux. La spectroscopie d'émission complétée par des mesures de température des laitons-cible, ont permis d'accéder aux paramètres de fonctionnement du réacteur qui contrôlent la réactivité du plasma et de déterminer à l'interface plasma-surface, la nature chimique des espèces gazeuses susceptibles d'induire l'oxydation du substrat. L'analyse par des mé

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13

Morrison, Alasdair. "Powder based processing of novel dispersion strengthened copper alloys for fusion applications." Thesis, University of Oxford, 2017. http://ora.ox.ac.uk/objects/uuid:7a9f6c82-4fd1-4836-995d-eadf5dd74306.

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Copper (Cu) has high thermal conductivity and is thus ideal for high heat flux, thermal heat sink applications in fusion power applications. Divertor designs for future fusion power plants will expose Cu alloys to extreme thermal (>10 MW m<sup>-2</sup>) and neutron fluxes (200 dpa) that destabilise the microstructure of Cu. To improve stability, strength and creep resistance, alloying additions are used commercially, but these compromise thermal conductivity. Dispersed oxide particles may offer the opportunity for improved mechanical stability and creep resistance even at very low volume fract

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14

Pridham, M. S. "The high temperature stability of aluminium/lithium based alloys containing copper and magnesium." Thesis, University of Nottingham, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376649.

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15

Pareige, Philippe. "Etude à la sonde atomique de l'évolution microstructurale sous irradiation d'alliages ferritiques FeCu et d'aciers de cuve de réacteurs nucléaires." Rouen, 1994. http://www.theses.fr/1994ROUES070.

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Les aciers de cuve des réacteurs nucléaires sont fragilisés sous l'effet du bombardement neutronique. Parmi les causes possibles, le cuivre résiduel est reconnu pour jouer un rôle essentiel. Il est montré que la fragilisation est associée à une fine précipitation de particules riches en cuivre de taille nanométrique. Dans ce travail, nous avons, dans un premier temps, en utilisant les techniques de microscopie ionique, de sonde atomique classique et de sonde atomique tomographique, caractérisé (taille, densité, composition, nature des interfaces) les précipités formés sous une irradiation aux

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Kruyswijk, Lizelle. "Electrorefining of base metal refinery residue copper alloy for platinum group metal recovery." Master's thesis, University of Cape Town, 2009. http://hdl.handle.net/11427/6080.

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Secondary leach concentrate (SLC) is an important bleed stream for minor elements from Anglo Platinum’s Base Metal Refinery (BMR) which produces copper nickel and cobalt sulphate. It contains mainly sulphur, iron jarosites, unleached base metals and platinum group metals (PGMs), which makes the treatment of SLC necessary. The SLC is currently toll-refined at Umicore’s Hoboken smelter and refinery to recover revenue from entrapped valuable metals. This method of treatment results in excessively high costs due to high transport and toll refining expenses as well as penalties. Thus, an in-house m

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17

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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Al-Motasem, Al-Asqalani Ahmed Tamer. "Nanoclusters in Diluted Fe-Based Alloys Containing Vacancies, Copper and Nickel: Structure, Energetics and Thermodynamics." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-89355.

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The formation of nano–sized precipitates is considered to be the origin of hardening and embrittlement of ferritic steel used as structural material for pressure vessels of nuclear reactors, since these nanoclusters hinder the motion of dislocations within the grains of the polycrystalline bcc–Fe matrix. Previous investigations showed that these small precipitates are coherent and may consist of Cu, Ni, other foreign atoms, and vacancies. In this work a combination of on–lattice simulated annealing based on Metropolis Monte Carlo simulations and off–lattice relaxation by Molecular Dynamics is

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Phukphatthanachai, Pranee. "Development and Application of IDMS Based Procedure for total Sulphur in Copper Metals and Its Alloys." Doctoral thesis, Humboldt-Universität zu Berlin, 2019. http://dx.doi.org/10.18452/19851.

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Bei der Schwefelquantifizierung in Kupfer und anderen reinen Metallen zeigte sich in der Vergangenheit eine mangelnde SI-Rückführung und zusätzlich inkonsistente Ergebnisse, wenn verschiedene Methoden verglichen wurden. Um diesen Mangel zu beheben ist ein Referenzverfahren erforderlich, welches SI-rückführbare Werte mit einem zuverlässigen Unsicherheitsbudget ermöglicht. In dieser Studie wurde ein entsprechendes Referenzverfahren zur Quantifizierung von Gesamtschwefel in Kupfer basierend auf der induktiv gekoppelten Plasma-Massenspektrometrie und der Isotopenverdünnungsanalyse (ICP-IDMS) entwi

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Zhang, Xian. "Atmospheric corrosion of zinc-aluminum and copper-based alloys in chloride-rich environments : Microstructure, corrosion initiation, patina evolution and metal release." Doctoral thesis, KTH, Yt- och korrosionsvetenskap, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-151180.

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Fundamental understanding of atmospheric corrosion mechanisms requires an in-depth understanding on the dynamic interaction between corrosive constituents and metal/alloy surfaces. This doctoral study comprises field and laboratory investigations that assess atmospheric corrosion and metal release processes for two different groups of alloys exposed in chloride-rich environments. These groups comprise two commercial Zn-Al alloy coatings on steel, Galfan™ (Zn5Al) and Galvalume™ (Zn55Al), and four copper-based alloys (Cu4Sn, Cu15Zn, Cu40Zn and Cu5Zn5Al). In-depth laboratory investigations were c

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Fahad, Noor. "Experimental study of oxidation, ignition and combustion of aluminum based nanomaterials." Thesis, Queen Mary, University of London, 2014. http://qmro.qmul.ac.uk/xmlui/handle/123456789/8777.

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Aluminum based reactive nanomaterials have extensive applications in many fields including solid propellants, pyrotechnics, and catalytic reactions. One recent example is the novel concept of using nanostructured energetic particles for energy storage where the controlled exothermic reaction is the key to control the energy release process. It is of primary interest to understand the thermodynamics, kinetics, morphological and structural properties of these particles during the exothermic reaction. While the physiochemical properties of the monometallic powders are determined only by their siz

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Sahin, Nihat Ege. "Réduction électrochimique du dioxyde de carbone sur des électrocatalyseurs à base de cuivre." Thesis, Poitiers, 2016. http://www.theses.fr/2016POIT2313/document.

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Le réchauffement climatique est dû principalement à l'émission anthropique du dioxyde de carbone (CO2) dans l'atmosphère. Une réduction électrocatalytique et sélective de cette molécule a été proposée au cours de ce projet comme une solution prometteuse pour synthétiser des produits à valeur ajoutée. Une telle réaction requiert l'utilisation de matériaux efficaces et bas coût. Pour ce faire, les travaux de cette thèse ont porté sur la préparation de catalyseurs à base de cuivre dispersés sur différents substrats carbonés tels que le Vulcan XC-72R, les carbones mésoporeux CMK-3 et FDU-15, et de

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Phukphatthanachai, Pranee [Verfasser], Ulrich [Gutachter] Panne, Wolfgang [Gutachter] Frenzel, and Thomas [Gutachter] Meisel. "Development and Application of IDMS Based Procedure for total Sulphur in Copper Metals and Its Alloys / Pranee Phukphatthanachai ; Gutachter: Ulrich Panne, Wolfgang Frenzel, Thomas Meisel." Berlin : Humboldt-Universität zu Berlin, 2019. http://d-nb.info/1189070359/34.

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Al-Motasem, Al-Asqalani Ahmed Tamer [Verfasser], Frank-Peter [Akademischer Betreuer] Weiss, and Roger [Akademischer Betreuer] Smith. "Nanoclusters in Diluted Fe-Based Alloys Containing Vacancies, Copper and Nickel: Structure, Energetics and Thermodynamics / Ahmed Tamer Al-Motasem Al-Asqalani. Gutachter: Frank-Peter Weiss ; Roger Smith. Betreuer: Frank-Peter Weiss." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://d-nb.info/1067732209/34.

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25

Ouvrard, Blanche. "Matériaux conducteurs à haute limite d’élasticité dans le système Cu-Mg : élaboration, caractérisation et modélisation." Thesis, Bordeaux 1, 2013. http://www.theses.fr/2013BOR14860/document.

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Les alliages conducteurs à haute tenue mécanique sont utilisés dans de nombreux domaines tels que le transport, l’énergie et l’industrie électronique. La demande en ces matériaux est croissante. Les alliages Cu-Be constituent à l’heure actuelle les matériaux conducteurs les plus résistants mais posent un problème de toxicité et de coût. Pour proposer une alternative à ces derniers, nous avons étudié des alliages Cu-Mg hypo-eutectiques. Deux voies de synthèse ont été utilisées afin d’obtenir des composites endogènes possédant une combinaison originale de propriétés structurelles et fonctionnell

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Maignan, Antoine. "Etude des proprietes magnetostrictives de materiaux ferromagnetiques en vue de l'elaboration de capteurs magneto-acoustiques : etudes cristallochimique etoproprietes magnetiques d'oxydes de cuivre a valence mixte." Caen, 1988. http://www.theses.fr/1988CAEN2024.

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I. Proprietes magnetiques et magnetomecaniques (magnetostriction) et leurs modifications (traitements thermiques, irradiation par ions lourds) sont etudiees dans deux alliages amorphes ferromagnetiques. Ii. Proprietes structurales et supraconductrices d'une nouvelle famille d'oxydes supraconducteurs a haute temperature tl-ba-ca-cu-o

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27

Lin, Chan-Chin, and 林家進. "The Study of Copper Base Active Braze Alloys." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/45061039942265838223.

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碩士<br>國立東華大學<br>材料科學與工程研究所<br>87<br>With the ever-increasing number of ceramic materials in the market, joining of the metal and ceramic materials becomes an important issue in application of ceramics. Active brazing is one of the ideal methods to make metal/ceramic joints. The active braze alloy contains the active element, such as: Ti, Zr, Cr…etc., reacting and wetting the ceramics during brazing. Therefore, a strong chemical bond can be formed after brazing. Ag-Cu eutectic + (2-5)wt% Ti is one of the most popular active braze alloys. However, its high price prohibits its applications

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Pereira, Maria João Narciso Furtado de Melo. "Chinese Coins In Copper Based Alloys: Elemental And Microstructural Characterization." Doctoral thesis, 2012. http://hdl.handle.net/10362/82846.

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The Chinese cast coin collection from the CCCM’s Museum in Lisbon (Portugal) was accessible for analytical and metallographic characterization. In spite of the considerable number of similar items that populate museums and private collectors in Europe and North America, studies carried out in the western world are very scarce. Firstly, elemental characterization by EDXRF spectrometry was performed on 380 copper-based coins, revealing different types of alloys (coppers, bronzes and brasses) with variable alloy elemental composition. In bronze coins one of the main constituents was lead, which

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Shastry, Vyasa Vikasa. "Some Processing and Mechanical Behavior Related Issues in Ti-Ni Based Shape Memory Alloys." Thesis, 2013. http://hdl.handle.net/2005/2839.

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Shape memory alloys (SMAs) exhibit unique combination of structural and functional properties and hence have a variety of current and potential applications. The mechanical behaviour of SMAs, in particular the influence of processing on the microstructure, which in turn influences the performance of the alloy, mechanical properties at the nano-scale, and under cyclic loading conditions, are of great current interest. In this thesis, specific issues within each of these broad areas are examined with a view to suggest further optimize/characterize SMAs. They are the following: (a) For thermo-mec

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LIN, SHI-JIE, and 林士傑. "Investigation on fabricating copper-based shape memory alloys by powder metallurgy." Thesis, 1987. http://ndltd.ncl.edu.tw/handle/44588318805622564419.

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ZOU, REN-JIANG, and 鄒仁江. "Investigation on the corrosion and stress corrosion cracking of copper-based and aluminum-based alloys." Thesis, 1988. http://ndltd.ncl.edu.tw/handle/12918571715114476774.

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Yeh, Ming-Chi, and 葉銘騏. "Hemocompatibility valuation of Cu-based bulk amorphous alloys prepared by copper mold casting." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/82088256127447843079.

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碩士<br>國立高雄應用科技大學<br>機械與精密工程研究所<br>94<br>This research chooses the Cu54Zr22Ti18Ni6-xSix alloys to study, and uses the vacuum melting furnace to melt alloys under the argon atmosphere. The additions of silicon replace with nickel to mix the Cu-based alloys. The Cu-based bulk amorphous alloys prepared by arc melting and copper mold casting. The sample uses DSC for analysis of thermal property, uses micro-sclerometer for analysis of the mechanical property, uses XRD for the analysis of phase, and uses TEM for the analysis of microstructure. The Cu-based bulk amorphous alloys carry on the clotting

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Kim, Yong Jin. "Containerless melt processing of MnA1-based alloys and thermal spray deposition processing of pure copper." 1993. http://catalog.hathitrust.org/api/volumes/oclc/30692275.html.

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Thesis (Ph. D.)--University of Wisconsin--Madison, 1993.<br>Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 215-228).

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Hong, Pei-Chun, and 洪珮純. "Preparation and Microstructures of the Copper-Based (Cu–Al–Ni) Shape Memory Alloy." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/tkxm4f.

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碩士<br>國立高雄應用科技大學<br>機械與精密工程研究所<br>103<br>The work output density of shape memory alloys (SMA) are well recognized for their shape memory effect (SME) and pseudo-elastic(PE). Because of that, these alloys have attracted much attention to be used in micro/nano electromechanical systems(MEMS/ NEMS). The SMA thin films are confirmed that the shape memory properties with narrow hysteresis and a wide range of martensitic transformation temperature (Ms) of copper-based alloys thin films, towards applications for micro-actuators. Several aspects have been considered, such as fabrication procedures, ch

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Elgallad, Emad Eldin. "Effect of additives on the mechanical properties and machinability of a new aluminum-copper base alloy." Thèse, 2010. http://constellation.uqac.ca/276/1/030146241.pdf.

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Le présent travail vise à étudier les effets des additifs sur les propriétés mécaniques ainsi que sur l'usinabilité d'un nouvel alliage de fonderie, le 220 (Al-2%Cu-1.3%Si-0.4%Mg), destinés à des applications automobiles. Ce travail de recherche a été accompli à travers deux types d'étude : (i) l'étude des propriétés mécaniques (ii) et l'étude de l'usinabilité. L'étude des propriétés mécaniques visait à examiner les effets du Sr, Ti, Zr, Fe, Mn et Ag en plus des éléments de décolletage, Sn et Bi, sur les propriétés mécaniques de l'alliage 220 aux conditions tel que coulée et traitée thermiquem

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Chang, Chia-Ni, and 張佳妮. "The Determination of Zinc and Tellurium in Pure Copper and Nickel-based Alloys by Atomic Absorption Spectrometry." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/89145112322413768702.

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碩士<br>靜宜大學<br>應用化學系<br>90<br>In this research, atomic absorption methods for the determinations of zinc and tellurium in pure copper and nickel-based alloys were established. Different analytes were determined with different atomizers. Both nickel-based alloys and pure copper are composed of several metals and non-metals. Complex matrices made the analysis difficult. The goal of this research was to develop an ideal pretreatment method for the most sensitive and best experimental results. FIAS-HGAAS was used to determine the tellurium content in pure copper. Cupferron-extraction was

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Huang, Yi-Ting, and 黃怡婷. "Analysis of Material Properties of Copper-Based Alloy by 3D Printing and Modelling of Melt-Extrusion (ME)." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/mz9xja.

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碩士<br>國立臺灣大學<br>材料科學與工程學研究所<br>106<br>This study adapts a melt extrusion module [1, 2], which was designed and developed by our group, selects Cu-base alloys capable of melting at <1300 oC, and has conducted 3D printing to make smart mold in previous study. Therefore, this research objectives are to investigate the hardness, wear resistance and compositional uniformity of Cu-based alloys, and the forces required for the melt extrusion. The results show that the hardness (269 HV) of annealed Cu-9Ni-6Sn is obviously superior to Cu-6Ni-2Al (237 HV) and the surface hardness (207 HV) of Ni-coated k

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Chiu, Chun-hao, and 邱俊豪. "Direct and Simultaneous Determination of Mn, Fe and Co in Copper-based Alloy with a Multielement Graphite Furance Atomic Absorption Spectrometer." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/66574878663230005808.

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碩士<br>國立清華大學<br>化學系<br>89<br>A simple method is described for the determination of trace metals (Mn, Fe and Co) in copper-based alloy directly and simultaneously using a multi-element graphite furnace atomic absorption spectrometer(Perkin-Elmer SIMAA6000) equipped with a transversely heated graphite atomizer. The technique includes the microwave digestion system. Pd(NO3)2 with the special gas (5% H2 and 95%Ar) was used as the chemical modifier. The matrix interferences were removed completely so that a simple calibration curve method could be used. The relative standard deviations (RSDs) for

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Shen-Chieh, Lin, and 林聖傑. "An on-line bivalve-based behavioral response monitoring system allows an approach to estimate dose-response profiles of clams Corbicula fluminea exposed to waterborne copper." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/12749915752857205289.

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