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Dissertations / Theses on the topic 'Ni composite'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Sadeghi, Amir. "Microstructure evolution and strengthening mechanism in Ni-based composite coatings." Doctoral thesis, Universitätsbibliothek Chemnitz, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-211837.

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Ni electrodeposition is a suitable process for producing thick deposits and thick metallic microstructures, especially for producing relatively deep micromoulds in Microsystems industry. Ni-P deposits, due to their better properties compared to Ni deposits – particularly high mechanical properties (hardness, wear resistivity), corrosion resistance, magnetic properties, a higher fatigue limit and lower macroscopic deformation – can be a very good alternative for producing Microsystems, especially for MEMS or Microengines. According to few limited literature and our primary investigations, disp

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2

Daloz, William. "Developing a high temperature, oxidation resistant molybdenum-silica composite." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/54375.

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A new powder processing approach to produce oxidation resistant molybdenum alloys for high temperature use has been developed. Oxidation protection is provided by fine dispersion of silica glass particles within a molybdenum matrix. As the molybdenum oxidizes, the glass is exposed and melts to form a self-healing protective oxide coating. Additionally, homogeneously dispersed Mo5SiB2 and/or Mo2B provide boria upon oxidation which reduces glass viscosity and allows flowing glass to coat the surface while remaining solid internally. This is similar to the oxidation protection used in Mo-3Si-1B (

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3

Wood, Ryan C. "PROCESSING AND CHARACTERIZATION OF NANO-SIZE TiC-Cu-Ni COMPOSITES." OpenSIUC, 2015. https://opensiuc.lib.siu.edu/theses/1744.

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Metal carbides have attracted much attention over the past several years due to their unique qualities. The purpose of this research is to develop a cermet that demonstrates desired properties of nano-size titanium carbide (TiC) and copper-nickel (Cu-Ni) metals. In this study stoichiometric, nano-size TiC was synthesized through a patented carbothermal synthesis process (U.S. Patent No.: 5,417,952). The resulting TiC was sintered with varying copper (12.5-37.5wt %) and nickel (12.5-25wt %) contents. Hardness, fracture toughness, and microscopy studies were performed. Average hardness rang

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Torgerson, Tyler B. "Room and Elevated Temperature Sliding Wear Behavior of Cold Sprayed Ni-WC Composite Coatings." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1248400/.

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The tribological properties of cold sprayed Ni-WC metal matrix composite (MMC) coatings were investigated under dry sliding conditions from room temperature (RT) up to 400°C, and during thermal cycling to explore their temperature adaptive friction and wear behavior. Characterization of worn surfaces was conducted using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and Raman spectroscopy to determine the chemical and microstructural evolution during friction testing. Data provided insights into tribo-oxide formation mechanisms controlling friction and wear. It was d

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5

Sadeghi, Amir [Verfasser], Thomas [Akademischer Betreuer] Lampke, and Andreas [Gutachter] Bund. "Microstructure evolution and strengthening mechanism in Ni-based composite coatings : Microstructure evolution and strengthening mechanism in Ni-based composite coatings / Amir Sadeghi ; Gutachter: Andreas Bund ; Betreuer: Thomas Lampke." Chemnitz : Universitätsbibliothek Chemnitz, 2016. http://d-nb.info/1214377386/34.

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6

Mwita, Wambura Mwiryenyi. "Development and testing an intelligent hybrid polymeric composite beam with healing ability embedded with Ni-Ti shape memory alloy." Thesis, Cape Peninsula University of Technology, 2010. http://hdl.handle.net/20.500.11838/1251.

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Thesis (MTech (Mechanical Engineering))--Cape Peninsula University of Technology, 2010.<br>Hybrid polymeric composites (HPC) are widely used for the design of aerospace, automobile and civil engineering structures. One of the major challenges posed by these materials and structures is their brittle nature. When subjected to impact and dynamic loads, the polymeric composite structures undergo micro cracking. The cracks coalesce, propagate and can lead to catastrophic failure of the material and structures. In this thesis, an intelligent hybrid polymeric composite (IHPC) beam with healing abi

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7

Kharmachi, Imen. "Elaboration électrochimique des revêtements composites Ni-Co sur l'acier au carbone et étude des propriétés physico-chimique et anticorrosives." Thesis, Besançon, 2016. http://www.theses.fr/2016BESA2072.

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Dans ce travail, l’élaboration des revêtements électrolytiques Ni-Co par régimes continu et pulsé, sur acier ordinaire à partir d’un électrolyte support à faible teneur en nickel,a permis d’améliorer les propriétés physico-chimiques et anti corrosives. Cela a également entraîné la diminution de la toxicité du bain d’électrodéposition. Un plan Doehlert a été exploité afin d’optimiser les différents paramètres d’électrodéposition. D’une part, l’ajout des additifs (hydroquinone, gélatine et des nano-particules TiO2) dans l’électrolyte a un effet remarquable sur les propriétés physiques et chimiqu

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8

Gou, Jian. "Development and evaluation of NI-P-PTFE based nano-composite coatings for medical devices." Thesis, University of Dundee, 2015. https://discovery.dundee.ac.uk/en/studentTheses/4454574c-4447-48eb-adc7-4ca9874177eb.

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Medical device-associated infections and corrosion behaviour of medical devices always impose considerable inconvenience and distress to patients and place a substantial economic burden on health care systems. The aim of this research is to solve this problem by developing a new coating which can reduce bacterial adhesion and slow down the corrosion behaviour efficiently. In this study, two kinds of Ni-P-PTFE based coatings including Ni-P-PTFE-ZrO2 and Ni-P-PTFE-ZrO2-TiO2 were developed by electroless plating technique. The assays of bacterial adhesion and removal were conducted on nano-compos

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9

Воронова, А. С., І. М. Іваненко та Ю. М. Романенко. "Електрокаталітичні властивості Ni-, Co-шпінелей та їх композитів". Thesis, Сумський державний університет, 2016. http://essuir.sumdu.edu.ua/handle/123456789/52853.

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Чисті Ni-, Co-шпінелі, а також їх композити є актуальним об’єктом досліджень, оскільки вони володіють виключними властивостями і, як наслідок, мають широкий спектр можливостей застосування. Чисті Ni-, Co- шпінелі та їх композити мають розвинену площу поверхні, що є визначальним фактором для їх застосування при створенні нових електродних матеріалів та електрокаталізаторів паливних елементів. Важливим етапом досліджень є встановлення зв’язку між умовами проведення синтезу, структурно-адсорбційними характеристиками отриманих зразків та їх електрокінетичними властивостями.

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10

Tudela, Montes I. "Novel ultrasound-assisted electrodeposited Ni-based coatings for bearing applications." Thesis, Coventry University, 2015. http://curve.coventry.ac.uk/open/items/d5937c67-9161-4709-8852-fa73c566aa26/1.

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The purpose of the present PhD research project was to evaluate the feasibility of the electrodeposition of novel thin Ni composite coatings with lubricant particles from an additive-free Watts bath and their application as diffusion barrier layers in journal bearings for medium-speed diesel engines. Overall, the main objective was to develop thin Ni composite coatings with the following characteristics: • Improved tribological performance. • Good adhesion properties. • Good ‘anti-diffusion’ performance. Ultrasound was used in the preparation of pure Ni coatings and Ni composite coatings with

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11

Wengorsch, Tobias. "Experimental Alteration in Composite Mineral Systems: Mg-silicates, Fe-Ni-sulphides and Fe-Ti-oxides." Thesis, Curtin University, 2019. http://hdl.handle.net/20.500.11937/78546.

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This study provides new insight into fluid-mediated replacement reactions for three different mineral systems. Hydrothermal experiments were conducted at 150 °C and 240 °C. It was found that serpentinisation reaction kinetics and crystal morphology are dependent on fluid and solid composition. Furthermore, primary Ni-sulphides were transformed into high Ni-tenor assemblages and it was found that the generation of fracture networks within ilmenite is strongly affected by the presence of hematite.

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12

Edfouf, Zineb. "Étude de nouveaux matériaux composites de type Si/Sn Ni/Al/C pour électrode négative de batteries lithium ion." Phd thesis, Université Paris-Est, 2011. http://tel.archives-ouvertes.fr/tel-00673220.

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Ce mémoire est consacré à l'étude de nouveaux matériaux composites de type Si/Sn-Ni/Al/C pour former des électrodes négatives de batteries lithium ion. La microstructure de ces matériaux se présente sous la forme de nanoparticules de Si enrobées dans une matrice conductrice constituée de carbone et d'un composé intermétallique Ni3,4Sn4. La nanostructure et la composition du matériau composite lui confèrent de très bonnes performances en termes de capacité réversible, de stabilité électrochimique, et de cinétique de réaction. La mécanosynthèse a été choisie comme méthode d'élaboration. Les prop

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13

Milenkovic, Srdjan. "Preparação e caracterização de materiais compositos in situ a partir de ligas euteticas no sistema Ni-Si." [s.n.], 1998. http://repositorio.unicamp.br/jspui/handle/REPOSIP/263177.

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Orientador: Rubens Caram Junior<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica<br>Made available in DSpace on 2018-07-26T07:16:41Z (GMT). No. of bitstreams: 1 Milenkovic_Srdjan_M.pdf: 7759506 bytes, checksum: e1492d0856f1de4a630a9c9f4d06a4dc (MD5) Previous issue date: 1998<br>Resumo: A busca por materiais estruturais para aplicações em temperaturas elevadas tem estimulado o interesse por ligas eutéticas. Em diversos sistemas, a estrutura eutética exibe estabilidade térmica inerente e pennite obter um material compósito, com microestrutura alin

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14

Pinate, Santiago. "Study of particle-current-electrocrystallization interactions in electroplating of Ni/SiC coatings." Licentiate thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Material och tillverkning, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-43548.

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Composite coatings have great potential due to the possibility to combine properties of two different materials in one coating. This way, new surface properties can be tailored and applied to any material's surface. Among different manufacturing routes, electrodeposition has the biggest potential in creating composite metal matrix coatings, especially nanocomposites. Nevertheless, there is a knowledge gap between the deposition of composite coatings in laboratory conditions, described in the literature, and those that are now in place on an industrial level. While micro-composites have been in

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15

Zhang, Rui. "Transition-metal-based composite and hybrid nanomaterials for catalytic applications." Doctoral thesis, Humboldt-Universität zu Berlin, 2018. http://dx.doi.org/10.18452/19224.

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In der Entwicklung von Technologien für die nachhaltige Erzeugung, Speicherung und Umwandlung von Energie werden Hochleistungskatalysatoren benötigt. Im Rahmen dieser Arbeit werden verschiedene Übergangsmetall-basierte Katalysatoren, namentlich TiO2/Kohlenstoff-Komposite, anorganisch-organische Hybridsysteme auf Basis von NiFe Phosphonaten sowie Ni Phosphide, synthetisiert, charakterisiert und hinsichtlich ihrer photo- und elektrokatalytischen Eigenschaften untersucht. Es wird gezeigt, dass die Grenzflächeneigenschaften der TiO2/C-Komposite signifikant durch die Gestaltung des Heizvorgangs wä

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16

Gopagoni, Sundeep. "Microstructure Evolution in Laser Deposited Nickel-Titanium-Carbon in situ Metal Matrix Composite." Thesis, University of North Texas, 2010. https://digital.library.unt.edu/ark:/67531/metadc33154/.

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Ni/TiC metal matrix composites have been processed using the laser engineered net shaping (LENS) process. As nickel does not form an equilibrium carbide phase, addition of a strong carbide former in the form of titanium reinforces the nickel matrix resulting in a promising hybrid material for both surface engineering as well as high temperature structural applications. Changing the relative amounts of titanium and carbon in the nickel matrix, relatively low volume fraction of refined homogeneously distributed carbide precipitates, formation of in-situ carbide precipitates and the microstructur

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17

Gutierrez, Ladron de Guevara Luis A. "Studies in powder injection moulding with a PEG-PMMA composite binder using Fe-50% Ni, Fe3%Si and Fe-7%Si soft magnetic alloy powders." Thesis, University of Sheffield, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.419566.

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18

Edholm, Oscar. "Design of cemented carbide with Ni-based superalloy binder strengthened with y’-Ni3Al precipitates." Thesis, KTH, Materialvetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-261137.

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Replacement of cobalt in cemented carbides has gained in attention recently because threats of regulations due to health issues (cancerogenic effect), increased demand from the electric vehicle industry and the questionable extraction from countries like Democratic Republic of Congo. In this report the use of Ni-based binder as an alternative binder for cemented carbides has been explored. The design is based on producing a Ni-based superalloy binder which contains dispersed Ni3Al Gamma Prime (γ’) -phase precipitates in the binder matrix. The investigation focuses on the design of cemented car

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19

Delfaut, Laurence. "Elaboration et caractérisation d'un matériau composite nouveau à base de tungstène." Grenoble INPG, 1996. http://www.theses.fr/1996INPG4203.

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Pour la realisation de projectiles-fleches, il a ete envisage de remplacer les alliages lourds frittes par un nouveau materiau plus performant. Nous avons donc elabore un materiau composite unidirectionnel constitue d'une forte fraction volumique de fils de tungstene (diametre 1 mm) et d'une matrice en nickel. Ce materiau vise a exploiter au maximum les proprietes des fils de tungstene telles qu'une densite et une resistance tres elevees, une microstructure fibreuse conferant une certaine ductilite. Pour la mise en forme du materiau, nous avons choisi d'utiliser une technique peu exploitee mai

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Bordeaux, Frédéric. "Mélange atomique exothermique et amorphisation en phase solide dans des composites de multicouches fines métal-métal préparés par co-laminage." Grenoble INPG, 1989. http://www.theses.fr/1989INPG0108.

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Etude des reactions exothermiques de melange atomique et d'amorphisation par reaction en phase solide dans des composites de multicouches fines metal-metal fabriques par co-laminage de rubans de materiaux purs ou d'alliages amorphes ou cristallises. La simulation numerique des reactions exothermiques est comparee aux resultats experimentaux et les utilisations possibles de ces composites en tant que fusibles de coupe circuit et alliages de brasure sont detaillees

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Liyanage, Thilan. "Microstructure and properties of Ni-alloy and Ni-WC composite overlays." Master's thesis, 2010. http://hdl.handle.net/10048/1545.

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The microstructures and performance of Ni-based alloys and Ni-WC (nickel-tungsten carbide) composite overlays deposited by plasma transferred arc welding have been studied. The Ni-alloy overlays had similar microstructures consisting of Ni dendrites, with interdendritic Ni-based eutectics, borides and carbides. Low hardness alloy overlays contained a smaller fraction of interdendritic phases relative to the high hardness alloys. The interdendritic regions make a significant contribution to the hardness since they are more than twice as hard as primary dendrites. The Ni-WC composites contain

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22

Huang, Ching Jeng, and 黃敬任. "Electroplating of Nano Ni-Fe-TiO2 Composite." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/16082889493398367985.

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碩士<br>國立交通大學<br>材料科學與工程系<br>90<br>This research aims to fabricate Ni-Fe-TiO2 composite coating by adding inert nano particle ,TiO2, into Ni-Fe plating bath and electroplated with puls current . Items studied included the distribution of nano TiO2 in Ni-Fe-TiO2 composite coating the mechanial property、crystallization orientation and electrochemiscal property of the composite coating to obtain the optimum electroplating parameters for manufacturing micro-mold. Taguchi method was employed high-aspect-ratio using in UV-LIGA process . The dispersion of nano TiO2 in the coating could be i

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崔智涵. "A study of Electroless Ni/pigment composite." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/42103275090433520997.

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碩士<br>逢甲大學<br>化學工程學系<br>89<br>Ni/pigment composite film plated from an electroless Nickel bath which contains pigment colloid solid particles which has been pretreated with some proper surfactants so that they can be uniformly disperse in the plating bath. In the process of Ni/pigment codeposition, the adsorption between nickel ions on the counter layer of pigment as well as pigment on substrate play an important role,whereas these adsoption behaviors depend on the treatment of surfactant. This project will lay special emphasis on the mechansium of Ni/pigment codeposition as well as to

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Zhang, Yi Ming, and 張益銘. "The synthesis of nanocrystalline Ni/Al2O3 composite." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/83176553047560916007.

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Chen, Fang-Yi, and 陳芳儀. "Preparation of Ni-Zn-Co-S/3D porous Ni composite electrodes for supercapacitor applications." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/4s5emx.

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碩士<br>國立中興大學<br>化學工程學系所<br>107<br>In this study, a three-dimensional porous nickel (3D Ni) as the substrate was synthesized via cathodic electrodeposition, followed by a facile two-step strategy that involved the hydrothermal growth of ZnCo-precursor on the 3D Ni and subsequent transformation into Ni-Zn-Co-S through the sulfurization process. The study would include two parts. The first part, Ni-Zn-Co-S was grown directly on the 3D Ni with different deposition times as composite electrodes for supercapacitors. The results indicated that the Ni-Zn-Co-S/3D Ni-6 electrode exhibited the high speci

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Wen-ching, Liao, and 廖文慶. "ADSORPTION OF Cd, Cu, AND Ni ON COMPOSITE ADSORBENTS." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/08838902257499424604.

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碩士<br>大同大學<br>化學工程研究所<br>89<br>This experiment studied adsorption behavior of metal ions onto complex adsorbent. The raw material of used activated carbon F-400 in this experiment is coal. Adsorbents used in this experiment were GAC, Al-GAC, Fe-GAC and Al2O3, characteristics were measured by BET and XRD. Adsorption of copper onto Al-GAC at pH=6 is better than other Al-GAC prepared at different pH value (3.5, 8 and 11). Adsorption of divalent copper on un-calcined is better than calcined Al-GAC. Divalent copper, nickel and cadmium were used to study single component and multi-compone

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Yang, Che-Hsiu, and 楊哲修. "Application of TiO2/Ni Composite prepared by Electrophoretic Deposition." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/41928489350875075083.

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碩士<br>國立雲林科技大學<br>工業化學與災害防治研究所碩士班<br>90<br>A survey on electrophoretic deposition of TiO2/Ni composite by pulse current on stainless steel is given. Many experimental factors (current density, pulse current diameter, stirred speed) were found to influence quality of composite. Scanning electron microscopy(SEM) with an energy dispersive X-ray (EDX) and optical microscopy were carried out to analyze the surface of the film and found the optimal operating condition. E. coli were used to study the bactericidal effect of TiO2/Ni composite, methanol were used to study the degradation of gas. The sur

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Ming-Der, Ger, and 葛明德. "The Study of Electroless Ni-P/PTFE Composite Coatings." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/62765238270781110312.

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博士<br>國立臺灣科技大學<br>化學工程系<br>90<br>It is well known that the electroless Ni-P coating has a highly even plating capability, high bonding strength, excellent weldability, electrical conductivity, good antiwear properties, and controllable magnetic properties through suitable heat treatment. Furthermore, the mechanical and tribological properties of the electroless Ni-P coatings can be improved by the incorporation of solid particles of lubricants such as graphite, PTFE, MoS2 etc. Due to its non-stick nature, non-galling, excellent dry lubricity, low friction, good corrosion resistance and non-fla

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Wang, Yung-Cheng, and 王詠証. "Composite-electrodeposition of Ni/cBN by pulsed power supply." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/54485646953587894432.

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碩士<br>國立高雄應用科技大學<br>模具工程系<br>99<br>The pure nickel deposition and Ni/cBN composite deposition on Cu were carried out in the nickel sufamate bath containing various amount of nano/microsized cBN particles. The effects such as DC power and pulse power and current density and the amount of cBN were controlled to obtain pure nickel films and composite Ni/cBN films, which were followed by characterization procedure, including basic properties measurement by vickers hardness tester and abrasion resistance machine, and microstructure examination by X-ray diffraction（XRD）and scanning electron microsco

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HONG, JIA-JUN, and 洪嘉駿. "Ni-SiC Composite Coating Process Development and Tribology Characteristics." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/4b4297.

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Jlang, an-zhou, and 江安洲. "The study of Al2O3-Black Ni solar spectrallyselective composite absorbers manufactured byelectroless composite coating technology." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/4e4b4m.

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碩士<br>國立虎尾科技大學<br>材料科學與綠色能源工程研究所<br>97<br>The metal-dielectric composite spectrally selective solar absorbers were widely used in solar thermal collectors due to its excellent absorption. The manufacture cost of the metal-dielectric composite spectrally selective solar absorbers is expensive and that limits its applications. In this work, the electroless composite coating technology which possesses lower cost, simple equipment and easy to operate characteristics was used to fabricate the Al2O3-black nickel composite solar selective surface on Al substrate and the Sol-gel technique was used to

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Lin, Sin-Jy, and 林杏芝. "Wear Behavior of Electroless Ni-P-SiC Composite Coating Layer." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/87910419555634571982.

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碩士<br>國立成功大學<br>材料科學(工程)學系<br>86<br>Electroless Ni-P coatings have the advantages of compact structure, low porosity, good corrosive resistance, uniform thickness, and better hardness after heat treatment than hard Cr coatings. To improve the mechanical performance of electroless Ni-P coatings, metal and second phase particles were codeposited by suspending second phase particles in an electroless plating bath. Electroless Ni-P and SiC particles were codeposited on SKD61 steel to

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Chu, Lin Peng, and 林鵬舉. "Study of the characteristics of Ni-PTFE(polytetrafluoroethylene) composite coating." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/32195095084585934109.

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碩士<br>中正理工學院<br>應用化學學系研究所<br>86<br>Abstract In this study, the self-lubricant composite coating was developed by means of electroless plating. Polytetrafluoroethylene（PTFE） and nickel are codeposited on matrix of elements. We use the cationic and nonionic surfactants to modify PTFE surface. The results show that the zeta potential of PTFE particles is more positive, the PTFE particles are easier to codeposit with nickel and the PTFE content in coatings is greater. In order to determine the

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Chen, Miao-Qi, and 陳妙琪. "Fabrication and Characterization of Composite-Electroplated TiO2-Ni Photo-Catalyst." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/54292875212367387696.

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碩士<br>國立交通大學<br>材料科學與工程系<br>91<br>The photocatalyst has been the most potential method for degradation of organic contamination, purification of water and industrial sewage in recent years. The catalyst itself will not undergo changes and its structure will not be damaged as a result of the chemical reaction. In addition, high active species like OH-, O2- etc. will be produced during the photoelectrochemical reaction occurred on the nano-sized catalyst; these species can readily transform organic compounds, mercaptan, NOx and ozone in the atmosphere into CO2 and H2O. The properties of nano-siz

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Chen, Rong-Zhi, and 陳榮志. "Effect of Interface on Mechanical Properties of Al2O3/Ni Composite." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/72347465249897395299.

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CHANG, CHIEN-RONG, and 張兼榕. "Electroplating and Characterization of Ni-B Alloy and Composite Coatings." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/52339999205843221512.

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Chen, Wan-Ying, and 陳婉瑩. "Fabrication of Ceramic-Pd/Ni Composite Membrane for Hydrogen Permeation." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/86668537523477237755.

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碩士<br>國立交通大學<br>材料科學與工程學系<br>100<br>This work is concerned with the fabrication of a composite cermet membrane that allows the permeation of hydrogen from a mixture gas of hydrogen and carbon dioxide. The composite membrane contains perovskite and pyrochlore that are mixed intimately with nanoparticles of PdNi. We prepare the ceramics (BaCe0.9-xZrxGd0.1O3-α and La2-xSmxCe2O7) via a combustion method and determine their chemical stability against carbon dioxide ambient. The PdNi nanoparticles in 20 nm sizes are synthesized by a successive reduction method and undergo a annealing process to form

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Tsai, Yu-Ten, and 蔡宇硯. "CNTs/Ni-Co metal oxide composite electrode for supercapacitors application." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/6xu35s.

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碩士<br>國立清華大學<br>材料科學工程學系<br>106<br>In this thesis, a high-performance supercapacitor based on MWCNTs/Ni-Co hydroxide nanocomposites was developed. The MWCNTs on carbon fiber were prepared by the drop-by-drop process, followed by pulse electrodeposition of Ni-Co hydroxide nanoflakes on the surfaces of MWCNTs. The effects of the pulse electrodeposition conditions of Ni-Co hydroxides, including the deposition current density, current-on time, current-off time, deposition cycles and Ni to Co bath ratio, and MWCNTs drop-times were systematically investigated. The optimum deposition conditions were

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Hsu, Che-Yuan, and 許哲源. "The study of Ni-Al2O3 solar spectally selective composite absorbers manufactured by electroless composite coating technology." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/s5k465.

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碩士<br>國立虎尾科技大學<br>材料科學與綠色能源工程研究所<br>96<br>In this work, the metal-dielectric composite (Ni-Al2O3) solar spectally selective absorbers have been deposited on aluminum substrate using the electroless composite coating technology and the antireflection layers for the absorbers were fabricated by sol-gel method. The effects of the size and content of dielectric (Al2O3), the thickness of absorber, the double absorption layer and the antireflection layer on the absorbance (α) and thermal emittance (ε) of Ni-Al2O3 composite solar selective absorber were studied. The surface morphology of absorber and

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Wang, Po-sen, and 王柏森. "Study of characteristics of Ni/SiC composite microstructure formed by electroforming." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/57347226994643038335.

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Wu, Yu-Chen, and 吳育誠. "Ni(OH)2-MnO2 oxide composite materials for alkaline battery application." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/76583858554116638574.

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碩士<br>國立暨南國際大學<br>應用化學系<br>97<br>The alkaline batteries can be classified into two types: primary or secondary alkaline battery. The cathodic material of primary alkaline battery normally is γ-MnO2 with one-dimensional tunnel-structure. The disadvantage of γ-MnO2 is low power density which it can not be applied for high speed discharge. The cathodic material of secondary alkaline battery is Ni(OH)2 with two-dimensional layer-structure. The usage of nickelate is limited by its cost and environmental pollution. To improve these disadvantages, a mixed layered structure of Ni(OH)2-MnO2 composite o

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Yeh, S. H., and 葉信宏. "Study of the Mechanism and Process of Ni/SiC Composite Plating." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/26620021788432372833.

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Chenn, Yu-Hen, та 諶昱涵. "Synthesis of Nano-Sized α-Al2O3/Ni Core-Shell Composite Powders". Thesis, 2005. http://ndltd.ncl.edu.tw/handle/883f47.

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碩士<br>國立臺北科技大學<br>材料及資源工程系所<br>93<br>In this study, the coating of Ni on the fine α-Al2O3 (<200nm) surface was performed using chemical reducing process. The processing conditions such as pH value , temperature , concentration of metal salt precursor , and response time were optimized though analyzing the characteristic of coating layer. A typical procedure was as follows: NiCl2．6H2O in water solution was added to α-Al2O3 suspension . The suspension was then mechanical stirred and adjusted the pH to 11 , at temperature of 80℃ for 30 min , then carry on every physical and chemical analyses , i

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Chen, Yong-Yun, and 陳泳澐. "Study of solar selective absorbing film by electrodeposited Ni-WC composite coatings." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/ue8mz9.

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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>104<br>Solar thermal industry has been in the current state of development, the more common of the products for the solar pond and water heaters. The possibility of civilian power generation costs of its rich technology and more suitable to the development of solar energy applications in high temperatures, the developmental potential is limitless. This study used composite plating method, add WC powder Electroplating Ni - WC Composite plating layer in Watts bath, has the highest absorption rate in WC 40g / L, it can reach 0.956. And the surface morphology was

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Chen, Po-Wei, and 陳柏瑋. "Preparation calcium zincate composite and its application to a Ni/Zn battery." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/76306082666603047808.

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碩士<br>明志科技大學<br>化工與材料工程研究所<br>97<br>The purpose of this work is to improve the life-cycle of a Zn electrode on a secondary Ni/Zn battery. As we know, the application of the secondary Zn electrode on the rechargeable Ni/Zn battery is still limited because of the dendritic growth, the shape change, and the high solubility in a concentrated KOH solution for the Zn electrode. The calcium zincate powders used as active materials (so-called CP-ZnCa) for the secondary Zn electrode were prepared by a chemical co-precipitation (CP) method. The preparation condition of CP-ZnCa active materials was at 60

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Chen, Jing-Chiang, and 陳景強. "A study of electrochemical properties of Ni-CGO composite for SOFC anode." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/77734425710123226637.

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碩士<br>國立中山大學<br>材料科學研究所<br>94<br>For the past few decades, Ni-YSZ (yttria-stabilized zirconia) has been the dominate anode material of high temperature (>1000℃) solid oxide fuel cells (SOFCs). However, the conductivity of Ni/YSZ is not enough when the operation temperature is in the intermediate rage of 500~700℃. Instead, Ni/CGO is a good candidate as the anode material of intermediate temperature SOFCs (IT-SOFC), due to its enhanced conductivity. This work was aimed at the preparation of Ni/CGO composite anodes using the electrostatic assisted ultrasonic spray pyrolysis (EAUSP) method. By pro

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Chen-Chi, Hsiao, and 蕭振琪. "The Study of Electroless Ni-P/PTFE Composite Coating on Copper Substrate." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/15527506533526909532.

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碩士<br>吳鳳科技大學<br>光機電暨材料研究所<br>101<br>In this thesis, we investigate electro-less deposition of the Ni-P/ PTFE composite materials on top of the copper-based board. This kind of surface treatment can be widely utilized in plastic bag sealing of a cutting machine. Because of superior coating uniformity, good electrical conductivity, corrosion resistance, and anti-wear, Teflon com-posite plating and coating can lubricate the mechanical contacts with addition of graphite or molybdenum disulfide (MoS2) to prolong the life of mechanical function. To relate the consummation of Ni-P/PTFE composite m

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Chang, Chang-Shuo, and 張昌碩. "The Fabrication and Properties Analysis of Electroless Ni-P Based Composite Coatings." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/06893897419710122780.

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碩士<br>國防大學理工學院<br>兵器系統工程碩士班<br>99<br>Ni-P based composite coatings with well corrosion resistance, excellent wear resistance and uniform coating thickness, have widely applied in the industries of chemistry, machinery, electronics, automotives, textiles, aviation and aerospace. In this research, the Ni-P plating system was introduced hard ceramic SiC and Al2O3 particles and self-lubrication PTFE particles, and electroless plating as the method of development of Ni-P/PTFE-SiC and Ni-P/PTFE-Al2O3 dual-particles composite coatings. It hoped that the Ni-P based dual-particles composite coatings ex

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HSIEN, LEE CHUN, and 李俊憲. "The Research of Wear Characteristics of Electroless Ni-P Based Composite Coatings." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/27551546596640077937.

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碩士<br>國防大學理工學院<br>車輛及運輸工程碩士班<br>99<br>This research purpose was to evaluate the tribological properties of electroless plating nickel based composite coatings by tribological tests and measurements. In this study, four different types of coatings such as Ni-P, Ni-P-SiC, Ni-P-Al2O3, and Ni-P-PTFE-SiC, Ni-P-PTFE-Al2O3, composite coatings were prepared by electroless plating techniques. Variable factors of the plating process include the concentration of surfactant and submicron ceramic particles. For this work, a reciprocating wear test machine was used to carry out these tribological experiment

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Cheng, Kuang Chun, and 鄭光鈞. "Development and analysis of Ni-diamond composite coatings with high hardness values." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/r463kt.

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