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Dissertations / Theses on the topic 'Al2O3 composite'

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Published: 7 June 2025

Last updated: 2 August 2025

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1

Bihr, Jean-Claude. "Le Matériau composite NiAl-Al2O3." Phd thesis, Université Sciences et Technologies - Bordeaux I, 1996. http://tel.archives-ouvertes.fr/tel-00149385.

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Les industries aéronautiques tentent de mettre au point de nouvelles structures plus résistantes et surtout réutilisables en vue d'accélérer la conquête de l'espace. A cet effet, le matériau composite à matrice intermétallique NiAl renforcée par des fibres longues d'alumine semble prometteur et adapté à ces applications. Les travaux présentés concernent a la fois l' élaboration du composite par infiltration liquide sous pression de gaz et l'étude du couplage fibre-matrice (F/M), phénomène prépondérant qui gouverne les caractéristiques macroscopiques du matériau. Le couplage a été étudié par le

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2

Liu, Xi Cong. "Microstructure, comportement et endommagement des composites Al203/As7G06 ET Al2O3/As5U3G1." Châtenay-Malabry, Ecole centrale de Paris, 1993. http://www.theses.fr/1993ECAP0312.

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Deux composites Al203/As7G06 et Al203/As5U3G1, élaborés par la voie de squeeze-casting ont été étudiés suivant trois axes: microstructure, comportement et endommagement. Macroscopiquement, la répartition des fibres dans les composites est homogène. Les interfaces f/m dans les composites ayant subi les traitements T6 n'étaient pas suffisamment résistantes. Après un traitement TS, les interfaces ont été renforcées grâce à la diffusion de Mg vers les fibres. Les gains en rigidité et en taux de consolidation des matériaux sont significatifs. Les résistances à rupture des deux composites ayant subi

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3

SANTOS, THAIS da S. "Micro-nanocompósitos de Al2O3/ NbC/ WC e Al2O3/ NbC/ TaC." reponame:Repositório Institucional do IPEN, 2014. http://repositorio.ipen.br:8080/xmlui/handle/123456789/23599.

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Submitted by Claudinei Pracidelli (cpracide@ipen.br) on 2015-03-17T11:04:02Z No. of bitstreams: 0<br>Made available in DSpace on 2015-03-17T11:04:02Z (GMT). No. of bitstreams: 0<br>Dissertação (Mestrado em Tecnologia Nuclear)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

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4

Salem, Raphael Euclides Prestes. "Desenvolvimento de ZrO2/Al2O3 e ZrO2/Al2O3-NbC usando sinterização convencional e não convencional." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/74/74133/tde-26022018-094441/.

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Os compósitos cerâmicos de alto desempenho têm sido objeto de frequentes estudos nas últimas décadas, visando à melhora das propriedades mecânicas e ao aumento da sua gama de aplicações em produtos tecnológicos. Este trabalho consistiu em estudar a preparação, a sinterização convencional e não convencional e as propriedades mecânicas e tribológicas resultantes de dois sistemas compósitos: t-ZrO2/Al2O3 e t-ZrO2/Al2O3-NbC. No sistema t-ZrO2/Al2O3 foram estudadas as composições de 0, 5 e 15% em volume de Al2O3 usando pós comerciais. No sistema t-ZrO2/Al2O3-NbC, foi usado um pó nanocristalino de A

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5

Djenkal, Djamal. "Al2O3-AlON-SiC, composite céramique pour la coupe : élaboration et caractérisations mécaniques." Grenoble INPG, 1996. http://www.theses.fr/1996INPG4207.

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Les outils de coupe ceramiques permettent, par l'augmentation des vitesses de coupe, l'amelioration des rendements d'usinage. Ce travail a consiste a developper un composite a matrice alumine 80- oxynitrure d'aluminium 20 vol. Pourcents renforce par du carbure de silicium sous deux morphologies: poudre et plaquette. Les etudes ont porte sur les ameliorations du procede de fabrication et l'evaluation du comportement en frottement et en coupe d'un acier dur (z38cdv5) et un superalliage base nickel (inconel 718). Outre l'interet de la formation in situ de l'oxynitrure d'aluminium (reaction alumin

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6

Kurtoglu, Aziz. "Aluminum Oxide And Titanium Diboride Reinforced Metal Matrix Composite And Its Mechanical Properties." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605381/index.pdf.

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This study is on the production and testing of an aluminum metal matrix composite. Metal Matrix Composites can be produced in several different ways. In this study, an aluminum matrix composite is produced by direct addition of the reinforcement ceramic into the liquid metal. The ceramic reinforcement for this process was a mixture of TiB2 and Al2O3 which was produced by means of a thermite reaction of reactants Al, B2O3 and TiO2 all in powder form with their respective stoichiometric amounts. This ceramic mixture was ground to fine powder size and then added to liquid aluminum in small pe

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7

JAMET, JEAN-MARCEL. "Contribution a l'etude du composite ceramique tib2-al2o3 produit par reaction de synthese : elaboration et comportement dynamique." Nantes, 1994. http://www.theses.fr/1994NANT2121.

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La possibilite d'obtenir des composites ceramiques du type tib#2-al#2o#3 sous forme dense par la methode dite de reaction de synthese (shs) suivie d'une densification soit par compactage dynamique soit par pressage uniaxial a chaud est ici mise en evidence. Les densites finales obtenues evoluent entre 90% et 96% de la densite theorique. Les observations microstructurales ont revele la separation des deux phases avec presence de porosites residuelles. Le comportement du tib#2-al#2o#3 a ete etudie lors de sa densification statique. Un modele de consolidation de materiaux chauds et poreux applica

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8

Matsui, Jeferson Matsuji. "Estudo de degradação a baixa temperatura de cerâmicas Y-TZP/Al2O3 sintetizadas por coprecipitação." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/85/85134/tde-06092017-102722/.

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A zircônia tetragonal estabilizada por ítria (Y-TZP) têm sido utilizada na área odontológica para próteses livres de metais devido à estética associada ao alto desempenho mecânico. Porém, a presença de ambiente úmido pode causar a transformação acelerada da fase tetragonal para monoclínica e consequente falha catastrófica deste material, processo este conhecido como degradação a baixa temperatura ou envelhecimento. A cinética desta transformação é função da composição química da cerâmica e sua microestrutura. Tendo em vista que métodos químicos permitem a síntese de pós cerâmicos à base de zir

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9

Schauder, Thomas J. "The effects of thermomechanical processing parameters on elevated temperature behavior of a 6061 Al-Al2O3 metal matrix composite." Thesis, Monterey, California. Naval Postgraduate School, 1992. http://hdl.handle.net/10945/25886.

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The effects of thermomechanical processing parameters on the elevated temperature behavior of a 6061 aluminum -- aluminum oxides metal-matrix composite (MMC) have been studied. The same processing parameters were employed with unreinforced 6061 AL to provide a comparison. These materials were both thermomechanically processed at either 350 C or 500 C using two rolling schedules. Both schedules involved a constant strain per pass. Subsequent mechanical tests were conducted at temperatures 200 to 500 C and strain rates ranging from (6.7E-3)/s to (1.3E-1)/s. The materials processed at 500 C exhib

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10

Story, Christopher B. "Shape Memory Alloy / Glass Composite Seal for Solid Oxide Fuel Cells." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/42709.

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Widespread use of solid oxide fuel cells is hindered by a lack of long-term durability of seals between metallic and ceramic components caused by thermal expansion mismatch induced cracking. A novel gas seal design incorporating an engineered thermal expansion gradient in a SrO-La2O3-Al2O3-B2O3-SiO2 glass matrix with a TiNiHf shape memory alloy mesh for active stress relief and crack healing is being developed. Coefficient of thermal expansion (CTE) measurements of the seal and fuel cell components shows the possibility for a thermal expansion gradient. Differential scanning calorimetry and

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11

Drdlík, Daniel. "Vrstevnaté keramické kompozitní materiály - příprava, struktura a vlastnosti." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228575.

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The work was focused on the preparation of layered ceramic materials and their characterizations. The direct measurment of weight deposite for enhanced description of one component system was studied within this work. The kinetics of electrophoretic deposition obtained from theoretical calculation and from experimental values were confronted. It was prepared a lot of depositions for described kinetic of electrophoretic deposition with applied constant currents. The relative density and porosity were determined on the annealled and sintered bodies. The hardness measurments were performed on sin

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12

El, Mansouri Amine. "Développement de la technologie CVD à lit fluidisé pour l'enrobage de poudres céramiques par du pyrocarbone." Thesis, Bordeaux, 2021. http://www.theses.fr/2021BORD0052.

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Les composites SiC/SiC peuvent être produits par différents procédés : en voie liquide ou gazeuse (par voie CVD, en anglais : Chemical Vapor Deposition) ou alors en combinant ces deux dernières, c'est-à-dire en voie mixte. La méthode Slurry-cast MI semble être une voie prometteuse pour obtenir rapidement un matériau dense, sans porosité résiduelle (< 3 %). Les deux étapes clés dans le slurry-cast MI sont : i) le remplissage de la préforme fibreuse par de la poudre de SiC (sous forme d'une barbotine) et ii) la densification du milieu par l'infiltration du silicium liquide. Le traitement surf

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13

MATSUI, JEFERSON M. "Estudo de degradação a baixa temperatura de cerâmicas Y-TZP/Al2O3 sintetizadas por coprecipitação." reponame:Repositório Institucional do IPEN, 2017. http://repositorio.ipen.br:8080/xmlui/handle/123456789/28024.

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Submitted by Pedro Silva Filho (pfsilva@ipen.br) on 2017-11-17T17:43:50Z No. of bitstreams: 0<br>Made available in DSpace on 2017-11-17T17:43:50Z (GMT). No. of bitstreams: 0<br>A zircônia tetragonal estabilizada por ítria (Y-TZP) têm sido utilizada na área odontológica para próteses livres de metais devido à estética associada ao alto desempenho mecânico. Porém, a presença de ambiente úmido pode causar a transformação acelerada da fase tetragonal para monoclínica e consequente falha catastrófica deste material, processo este conhecido como degradação a baixa temperatura ou envelhecimento. A c

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14

Daoud, Amir. "Cold Gas Dynamic Spray Additive Manufacturing of Moisture-Electric Energy Transformation Devices." Thesis, Université d'Ottawa / University of Ottawa, 2020. http://hdl.handle.net/10393/40052.

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The ever-growing Internet of Things is promoting more data acquisition, data exchange and fewer human interactions, engendering a higher demand for sensors and therefore power. While in most cases it is possible to directly connect these sensors to the power grid, it will not always be feasible with emerging technologies, especially in remote areas where human access is limited. Moisture-Electric Energy Transformation (MEET) devices are components that use moisture as a “fuel” to generate electrical power. Upon contact with moisture, a potential difference results from a diffusion mechanism,

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15

Finsel, Maik [Verfasser], and Tobias [Akademischer Betreuer] Vossmeyer. "Synthesis of ZrO2/YSZ-Al2O3 composite and ZrO2/YSZSiO2 coreshell microparticles for high-temperature photonic applications / Maik Finsel ; Betreuer: Tobias Vossmeyer." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2019. http://d-nb.info/1197801510/34.

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16

Han, Jixiong. "Processing Microstructure Evolution and Properties of Nanoscale Aluminum Alloys." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1121701078.

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17

TSAI, CHEN-HUNG, and 蔡政宏. "Mechanical properties of Al2O3/NiAl composite." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/71565420473299278700.

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碩士<br>國立臺灣大學<br>機械工程學系<br>85<br>Structural ceramic (also named Engineering ceramic) is a newly developedmaterial. Compared with metal for structure, it demonstrates manyexcellent physical and mechanical properties. Such as low density, lowcoefficient of expansion,low heat transfer coefficient, high Young'smodulus, high hardness, high compress strength, and good corrosion, oxidization,and creep resistance. Howrver, extreme brittleness is the primany obstacleto its application in engineering.

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18

Chen, Chin-Kai, and 陳進凱. "Fabrication and Hydrogen Permselectivity of PdNi/Al2O3 and PdNiAg/Al2O3 Composite." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/5gw4v9.

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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>102<br>The Pdlladium membrane has been extensively used in the process of hydrogen purification due to its excellent hydrogen permselectivity. The Pd membrane was electrolessly deposited on the porous α-Al2O3 substrate to form the Pd/Al2O3 composite membrane, in which the thickness of Pd membrane can be decreased to reduce the cost while exhibits excellent hydrogen permeance and good mechanical properties. In this work, the ultrasound-assisted activation process has been used to activate the porous α-Al2O3 substrate for improving the dispersion and adhesion

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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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Das, Pranay. "Development and Characterization of Zn-Al2O3 Composite." Thesis, 2016. http://ethesis.nitrkl.ac.in/9300/1/2016_MT_PDAS.pdf.

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Nanocomposites have been of great importance lately due to the wide range of possibilities of developing materials with required tailored physical, mechanical and electronic properties at low cost having diverse applications ranging from coating applications and electronic or optic devices to structural components, automotive and industrial applications and numerous others. By optimizing and controlling the fabrication process, the mechanical properties like toughness, hardness, wear and abrasion resistance, flexural strength as well as thermal and electrical properties of materials can be enh

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21

Shen, Shin-Yi, and 沈欣誼. "Preparation of Al2O3 Fibers, SiC Fibers and Al2O3/SiC Composite Fibers from Carbon Fibers." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/3n2p83.

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碩士<br>大同大學<br>材料工程學系(所)<br>95<br>Alumina and silicon carbide fibers were prepared from carbon fibers or active carbon fibers by shape memory synthesis technique. The activated carbon fibers and carbon fibers were placed in a vacuum furnace with aluminum and heated at 1100℃ for 8 hours to form aluminum carbide. Then, the aluminum carbide fibers were oxidized in air at 1500℃ for 3 hours to convert aluminum carbide into aluminum oxide. The resulted alumina fibers had BET surface area as high as ~100 m2/g. For the synthesis of silicon carbide fiber, carbon fibers were reacted with silicon powder i

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Cheng, Yi-Fen, and 鄭怡芬. "Study of Ultrasound on Hydrogen Permselectivity of Pd/Al2O3 and PdCuP/Al2O3 Composite Membranes." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/mun6vj.

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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>101<br>Palladium and its alloy membranes have good permeability of hydrogen. The Pd alloy/Al2O3 composite membrane stacked with the palladium alloy on the porous Al2O3 substrate is widely applied in the hydrogen separation and purification because of its high selectivity for hydrogen, good mechanical properties, and low cost. The electroless method has been widely used in the fabrication of Pd alloy /Al2O3 composite membranes due to its simple process and low cost. In this work, an ultrasound-assisted Pd activation process has been used to activize the porou

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Huang, Chun-Kai, and 黃俊凱. "Effects of The Modification of Al2O3 Substrate on The Hydrogen Permselectivity of Pd/Al2O3 and PdNi/Al2O3 Composite Membranes." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/7n544e.

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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>100<br>Palladium membranes have been widely applied in hydrogen separation and purification due to their good hydrogen permselectivity, outstanding chemical and thermal stabilities. However, the palladium membrane has some drawbacks in applications of hydrogen purification such as hydrogen embrittlement at low temperature and higher cost. Previous studies have showed that the Palladium-base alloy membranes can solve the hydrogen embrittlement and reduce the cost of Palladium membranes. The γ-Al2O3 and γ-Al2O3(Pd) modified layers were dip-coated on the α-A

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Nagendra, N. "Processing, Microstructure And Fracture Characteristics Of High Volume Fraction Al2O3/(Al-AlN)Matrix Composites." Thesis, 1997. https://etd.iisc.ac.in/handle/2005/1796.

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Nagendra, N. "Processing, Microstructure And Fracture Characteristics Of High Volume Fraction Al2O3/(Al-AlN)Matrix Composites." Thesis, 1997. http://etd.iisc.ernet.in/handle/2005/1796.

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Wang, Shi Ming, and 王世明. "Investigation fatigue and fracture behavior of Cr3C2/Al2O3 composite." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/63399576020491938287.

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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>Alumina is one of the most popular commercialized structural ceramics. However, the intrinsic brittleness of alumina makes its reliability and usage limited. It was previously reported that the alumina can be strengthedby incorporating Cr3C2 particles. The Al2O3 incorporated with 10vol.% Cr3C2 were used in this experiment. The injection moldimg technique is a good way for making complex-shaped components and was chosen for making test specimens in this

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Shih, Kai-Chiang, and 施凱強. "Preparation and Properties of SiO2-Al2O3/Waterborne Polyurethane Composite." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/5c9h7h.

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碩士<br>國立臺北科技大學<br>化學工程研究所<br>102<br>The purpose of this study is to synthesize three kinds of SiO2-Al2O3 inorganic materials by the Sol-Gel method using Tetraethyl orthosilicate and Aluminium tri-sec-butoxide, their structures and component were identified by IR, Raman, XRD and EDS, composite were prepared by SiO2-Al2O3 and waterborne polyurethane, to investigate the effects of change the different SiO2/Al2O3 ratio on the thermal properties, mechanical properties and moisture absorption. The result are divided into three parts as follows: 1. The thermal properties of composites were measured b

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LO, HSUEH-FU, and 羅雪夫. "Studies on the Preparation of HDPE/Al2O3 Composite Polymers." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/03877986928070959886.

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碩士<br>明新科技大學<br>化學工程與材料科技系碩士班<br>101<br>Abstract This research was divided two parts. The first parts, micron and nano aluminum oxide particles were chemically modified with vinyltrimethoxy silane coupling agent, The second parts, modified micron and nano aluminum oxide were subjected to incorporate into the high density polyethylene(HDPE) matrix in series phr of 1,3,5,7 and 9. Al2O3 micron and nano particles were dispersed in the HDPE by using laboratory extruder to prepare HDPE/Al2O3 micron and nano composite polymers. The properties of micron and nano HDPE/Al2O3 composite films were measur

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Chung-CheWei and 魏崇哲. "Fabrication of Al2O3(A)/CexZr1-xO2(CZ) Composite Powders." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/38607221360886689666.

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Lai, Yen-Han, and 賴彥翰. "Insulating thermally-conductive xGnP/Al2O3 composite phase change materials." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/82535307710248116494.

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碩士<br>元智大學<br>光電工程學系<br>104<br>The topic of this study is about the insulating thermally-conductive composite phase change materials,(PCMs). We added carbon materials in the PCMs to enhance their thermal conductivity, but the carbon material may significantly reduce the resistance, which might result in short circuit of electronic components. Therefore , the carbon materials must be modified in order to enhance the insulation. In this study, the PCM that was used was paraffin wax（Tm = 63°C）. And the carbon material, included homemade exfoliated graphite nanoplatelets（xGnP）and comercial graphen

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Chen, Jin-Zhong, and 陳進忠. "Preparation of Cu-Al2O3 Composite Material by Mechanical Alloying." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/8bpf87.

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碩士<br>國立臺北科技大學<br>材料科學與工程研究所<br>97<br>Pure Cu powder and alumina powder are used for preparing Cu-3wt.%Al2O3 oxide dispersion strengthen（ODS）composite powders through mechanical alloying（MA）method. Fixed rotation speed of ball mill, BPR and temperature, milling time as the variety unit. The evolution of microstructure change and composite powder morphology are analyzed by XRD, SEM, EDS and Laser light scattering particle size analyzer. Cu oxides are formed during Cu powder preparation where open environment. The microstructure of powder changes the milling time with decreases. Uniformly mixed

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Roy, Kanchan. "Study of Damping in Epoxy-Al2O3/Glass Composite Beams." Thesis, 2018. http://ethesis.nitrkl.ac.in/9657/1/2018_MT_216ME6422_KRoy_Study.pdf.

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The current research aims to study the influence ofAlumina (Al2O3) filler reinforcements on the tensile and damping behavior of glass fiber/epoxy (GFRE) composites.The polymer composites are manufactured using hand lay-up technique. The volume fraction of Glass fiber is kept constant at 25% whereas the volume fraction of Al2O3 in the composites is varied in the percentages of 5, 10, 15 and 20. Tensile test is undertaken in an Universal testing machine and Energy Dispersive X-Ray Spectroscopy (EDS) of the samples is done in conjunction with FESEM to examine the fractured surface

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Lin, Kuan-fu, та 林冠甫. "The Quantity of Nano α-Al2O3 Filler on the Mechanical Properties of α-Al2O3/Epoxy Composite". Thesis, 2010. http://ndltd.ncl.edu.tw/handle/34071474565843322521.

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碩士<br>逢甲大學<br>紡織工程所<br>98<br>In this study, the first of two different dispersants was used and mixed in different proportions. The concentration of the absorption was measured using UV spectroscopy to decide and find the best conditions of the intensity of dispersing agent. Then, using wet milling under different conditions of grinding media, and appropriate speed to find a suitable milling time for treating of α-Al2O3 nanopowders. 3 % α-Al2O3 powder was added to the epoxy resin as filler, besides defoamer, coupling agent, plasticizer were also added to the mixture, under different conditions

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Lauo, Chun-Hsin, and 廖俊鑫. "Fabrication of Al2O3/6061 Al alloy composite by pressureless infiltration." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/48198496903329640186.

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碩士<br>大同大學<br>材料工程研究所<br>91<br>That this research, We fabricated Al2O3/Al composites by pressure -less melt infiltration. Porous Al2O3 compacts were immersed in molten nickel nitrate to infiltration nickel nitrate into the pores. After the infiltr -ated, compacts were dried and heat treated in inert atmosphere, the nickel nitrate reduced to nickel, which was dispersed in the pores of Al2O3.The Ni containing Al2O3 compacts were then infiltrated with 6061 aluminum alloy to form dense composite with; little dimensional changes. Results showed that samples with 4.3~4.7vol% Ni had to be

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Liu, Ping Hsueh, and 劉秉學. "Synthesis and Characterizations of Spherical Al2O3 Particle/Polymer Composite Materials." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/9x4u64.

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碩士<br>國立臺北科技大學<br>材料及資源工程系研究所<br>98<br>This study is based on the technology of Al2O3 powders coated with PMMA polymer to form ceramic-polymer composite. Al2O3 powders and MMA cannot form a chemical bonding, therefore, γ-MPS was used as coupling agent to form and strengthen a chemical bond between PMMA polymer(organic) and Al2O3 powders(inorganic). Organic-inorganic material is prepared in alkaline condition. First, Al2O3 powders and γ-MPS proceeded condensation reaction in the ethanol to form a chemical bonding. Then free radical initiator and MMA were added into above material in sequence,

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Wang, Che Chung, and 王則眾. "Machining Characteristics of Al2O3/6061Al Composite Using Electrical Discharge Machining." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/75229430900312516756.

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博士<br>國立中央大學<br>機械工程研究所<br>87<br>The increasing demand for new lightweight materials with greater strength and toughness has led to the development of a new generation of composite materials in the recent decade, even though these same properties create major challenges for machining. Although possessing a greater hardness and reinforcement strength, composite materials cause serious tool wear when traditional machining is used. Nontraditional machining techniques such as laser machining, electrical discharge machining process, conclusively becomes a proper tool. However, the EDM wire-cut proc

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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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Chen, Ming-Jack, and 陳明頡. "Friction and Wear of PMMA/ AL2O3 Composite in Water Lubrication." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/kgv882.

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碩士<br>國立雲林科技大學<br>機械工程系碩士班<br>96<br>In recently years, the perfect attribute of Nano Composites has been emphasized, and it has raised the trend of nanotechnology in the worldwide. People expect the nanomaterial push forward the evolutional development in industry. Furthermore, the mechanical properties and tribological properties of Nano Composites are also concerned. In the thesis, the polystyrene and aluminum oxide made by so-gel are mixed to make Nano Composite. Nano Composite was dispensed to the materials in four kinds of weight ratios with 1% AL2O3 and 99% PMMA, 3% AL2O3 and 97%, 5%

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Hsu, Chiao-Yin, and 許喬茵. "The Study of Al2O3-NiP Solar Spectrally Selective Composite Films." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/23hw76.

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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>99<br>Spectrally selective surfaces have used in solar thermal collectors for absorbing solar radiation and converting it into heat. However, the cost of thermal solar collector is expensive, that limits the applications of solar thermal collector in solar photothermal conservation. In this work, composite electroless deposition was used to fabricate the Al2O3-NiP composite solar selective surfaces on Al substrates to form Al2O3-NiP/Al absorbers due to its cost is inexpensive and equipment is simple. The anti-reflection (AR) layers fabricated by Sol-gel tech

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Li, Cheng-Ying, and 李政穎. "Hydrogen Permselectivity and Thermal Stability of PdNi/Al2O3 Composite Membranes." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/28rb84.

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碩士<br>國立虎尾科技大學<br>材料科學與工程系材料科學與綠色能源工程碩士班<br>104<br>Pd is widely used in the metal/ceramic composite membrane for separating and purifying hydrogen gas owing to its excellent hydrogen permeation. However, the hydrogen permeation of Pd membrane declines due to the hydrogen embrittlement when the Pd is situated below 573K and 2 MPa. In this study, the Ni was added in Pd to form Pd94Ni6, Pd90Ni11 and Pd82Ni18 for reducing the temperature of hydrogen embrittlement and improving the duration of Pd membrane. Ultrasound has been utilized to assist the sensitization and activation of the porous Al2O3 s

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Lu, Yu-Kai, and 呂鈺楷. "Properties of PdNi/Al2O3 composite membranes prepared by electroless plating." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/c834y8.

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碩士<br>國立虎尾科技大學<br>材料科學與工程系材料科學與綠色能源工程碩士班<br>106<br>The Palladium membrane has excellent hydrogen permselectivity. However, the hydrogen brittleness of pure palladium is a problem which causes the decay of permselectivity. Alloying the palladium can enhance its resistance to hydrogen brittleness. The Pd alloy membrane was deposited on the porous Al2O3 substrate to form the Pd alloy/Al2O3 composite membrane, which can reduce the Pd alloy membrane thickness, enhance the hydrogen flux and improve the mechanical properties. The electroless plating technology was used to manufacture Pd alloy/Al2O3 c

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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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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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Singh, R. Arvind. "Studies Of Abrasion And Microresidual Stresses Of (Al2O3-SiC-[Al,Si]) Composite Made By Melt Oxidation." Thesis, 1997. https://etd.iisc.ac.in/handle/2005/2142.

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Singh, R. Arvind. "Studies Of Abrasion And Microresidual Stresses Of (Al2O3-SiC-[Al,Si]) Composite Made By Melt Oxidation." Thesis, 1997. http://etd.iisc.ernet.in/handle/2005/2142.

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Yen, Wang Jen, and 王振彥. "Sol-Gel Al2O3/ZrO2 Composite Coatings On AISI 440C Stainless Steel." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/30151790551108183686.

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碩士<br>國立中興大學<br>化學工程學系<br>90<br>Improve the wear and corrosion resistance of 440C stainless steel for IC package molding, Al203/ZrO2 composites films coatings were conducted in Zr(OC3H7)4 + H2O + C2H4(OH)2 and Al(OC3H7)3+ H2O+ C3H7OH solutions , respectively by dipping methods. The coated specimen were characterized by TGA/DTA,XRD, SEM, IR, scratch tests, wear corrosion test and polarization tests. TGA/DTA diagrams indicated that as-coated films were Zr2O(OH)6 and Al2O(OH)4,,respectively. XRD diagrams revealed that t-ZrO2 was crystallized at 500℃ and γ-Al2O3 at 700℃. Pola

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Hung, Hsu Sheng, and 洪旭昇. "Study of In-situ Formation Techanique on Al2O3-NiAl Composite Powders." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/51091686014785905655.

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"Synthesis and characterization of nanocrystalline Cu(CuOx)/Al2O3 composite thin films." 2003. http://library.cuhk.edu.hk/record=b5891726.

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Xu Yan = 納米銅(銅的氧化物)與三氧化二鋁復合物薄膜的製備和特性研究 / 許燕.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 2003.<br>Includes bibliographical references (leaves 50-51).<br>Text in English; abstracts in English and Chinese.<br>Xu Yan = Na mi tong (tong de yang hua wu) yu san yang hua er lv fu he wu bo mo de zhi bei he te xing yan jiu / Xu Yan.<br>Abstract --- p.i<br>摘要 --- p.ii<br>Acknowledgements --- p.iii<br>Table of Contents --- p.iv<br>List of Figures --- p.viii<br>List of Tables --- p.xi<br>Chapter CHAPTER 1 --- Introduction<br>Chapter 1.1 --- Nanostructured Materials --- p.1<br>Chapter 1.2

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李榮崇. "Machining Characteristics of Al2O3/6061Al Composite Using Wire Electrical Discharge Machining." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/06687737426946841340.

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碩士<br>國立中央大學<br>機械工程研究所<br>87<br>he MMC has its superior mechanical properties from various aspects in comparing with traditional metal, however, either the difficult cutting for MMC in machining or the expansive cost in fabricating may restrict the MMC to have any further applications. Thus, how to develop an effective and economic way in machining the MMC is an essential topic in applying this newly developed material. WEDM was adopted to machine the Al2O3 particles reinforced 6061 aluminum composite in this work. The machining rate, surface roughness, and slitting width of the ma

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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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