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Dissertations / Theses on the topic 'Boron additives'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Shah, Faiz Ullah. "Boron compounds as additives to lubricants : synthesis, characterization and tribological optimization." Licentiate thesis, Luleå : Luleå university of technology, 2009. http://pure.ltu.se/ws/fbspretrieve/3350614.

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2

Kilinc, Mert. "Production And Characterization Of Boron-based Additives And The Effect Of Flame Retardant Additives On Pet-based Composites." Phd thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/3/12610635/index.pdf.

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For the aim of production of poly(ethylene terephthalate), PET based flame retardant composites<br>boron based flame retardant additives, 3.5 mole hydrated zinc borate and boron phosphate were synthesized. Zinc borate was synthesized with the reaction of boric acid and zinc oxide in both laboratory and pilot scale reactors. Effects of reaction parameters on kinetics of reaction and final product particle size were evaluated. Boron phosphate was synthesized via dry, wet and microwave methods. In addition to the synthesized flame retardant additives, several non-halogenated flame retardant addit

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3

Kavalcı, Sedat Akkurt Sedat. "The use of boron-containing additives for synthesis of anorthite ceramic powders/." [s.l.]: [s.n.], 2006. http://library.iyte.edu.tr/tezler/master/malzemebilimivemuh/T000561.pdf.

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Thesis (Master)--İzmir Institute of Technology, İzmir, 2006<br>Keywords: Anorthite, boric acid, colemanite, statistical experimental design, X ray diffraction. Includes bibliographical references (leaves. 57-59).

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4

Animashaun, Lukman Aremu. "Tribochemistry of boron-containing lubricant additives on ferrous surfaces for improved internal combustion engine performance." Thesis, University of Leeds, 2017. http://etheses.whiterose.ac.uk/17660/.

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Global concerns for the environmental impact of pollutants from automotive sources require considerable reduction of phosphorus and sulphur-based antiwear additives in lubricating oils. One of such additives used as antiwear/extreme pressure (EP) additives in lubricating oils is Zinc Dialkyl DithioPhosphate (ZDDP). Potential replacements for ZDDP are antiwear/EP boron-based additives. In this study, a comprehensive evaluation of the tribological properties of model oils of different types of borate antiwear additives are considered for comparison to ZDDP on steel surfaces in tribo-contact. In

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5

Мініцький, А. В., О. С. Коротенко та Н. В. Мініцька. "Вплив добавок бору на процес допресовки порошкових матеріалів на основі заліза". Thesis, Сумський державний університет, 2016. http://essuir.sumdu.edu.ua/handle/123456789/47755.

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Експлуатаційні властивості порошкових матеріалів залежать, насамперед, від наявності залишкової пористості, яка обмежує використання порошкових виробів [1]. Основні напрями, пов’язані з отриманням високої щільності і підвищення характеристик виробів порошкової металургії, були зроблені в таких технологіях як подвійне пресування і спікання, штампування, просочування і високотемпературне спікання [2].

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6

Giovannelli, Maizo Iris Dayana. "Refratários avançados sinterizados com líquidos transientes." Universidade Federal de São Carlos, 2017. https://repositorio.ufscar.br/handle/ufscar/9338.

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Submitted by Aelson Maciera (aelsoncm@terra.com.br) on 2017-08-16T18:44:54Z No. of bitstreams: 1 DissDGM.pdf: 5323739 bytes, checksum: 447d6c5ecd08953e14c16e2d47d03040 (MD5)<br>Approved for entry into archive by Ronildo Prado (bco.producao.intelectual@gmail.com) on 2018-01-30T17:35:55Z (GMT) No. of bitstreams: 1 DissDGM.pdf: 5323739 bytes, checksum: 447d6c5ecd08953e14c16e2d47d03040 (MD5)<br>Approved for entry into archive by Ronildo Prado (bco.producao.intelectual@gmail.com) on 2018-01-30T17:36:40Z (GMT) No. of bitstreams: 1 DissDGM.pdf: 5323739 bytes, checksum: 447d6c5ecd08953e14c16e2d47d

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7

Bonet, Laplana Amadeu. "The activation of diboron reagents and their application in catalytic boron additions to alkenes." Doctoral thesis, Universitat Rovira i Virgili, 2012. http://hdl.handle.net/10803/79130.

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Els compostos organoborats son altament utilitzats en un extens nombre de camps, des de la medicina, en la teràpia de captura neutrònica en bor o altres molècules amb activitat biològica, fins a l’ús de molècules funcionals com els polímers. Nosaltres hem centrar la nostra atenció a l’ús dels compostos organoborats com intermedis de síntesis per a productes d’alt valor afegit. El tema principal d’aquesta tesis es el desenvolupament de noves metodologies sintètiques per la obtenció de compostos organoborats de manera eficient. Ens hem centrat bastant en la síntesis de compostos carbonílics -b

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8

Allen, Robert. "The effect of boron additions on the properties of controlled rolled carbon-maganese-vanadium steels." Thesis, Teesside University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328048.

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9

Johnsson, Elin. "Investigation of tribological mechanisms of a boron additive in lubricants and fuel enhancer." Thesis, Uppsala universitet, Tillämpad materialvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-258234.

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The effect of using a boric acid based additive in lubricants and fuel enhancers was investigated in this study. Experiments were performed in a reciprocating and a continuous sliding ball-on-disk test equipment. Different oil types and temperatures were used. The aim of the experiments was to provide information about how these boron containing lubricants work in terms of chemistry and tribology. The surfaces after tribological contact were analyzed with Light Optical Microscopy (LOM), Vertical Scanning Interferometry (VSI), Scanning Electron Spectroscopy (SEM), Energy Dispersive X-ray Spectr

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10

SANTOS, NICOLAU de A. "Estudo do processo de sinterizacao do carbeto de boro com adicao de carbono." reponame:Repositório Institucional do IPEN, 1995. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10460.

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Made available in DSpace on 2014-10-09T12:40:44Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:09:39Z (GMT). No. of bitstreams: 1 02751.pdf: 7124848 bytes, checksum: 953b44ed12302b6f4d35b091dd91cef3 (MD5)<br>Dissertacao (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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11

Cardoso, Fábio Martins. "Comportamento piezomagnético da liga Fe-Ga e Fe-Ga-B com 18,6 %at. de Ga e 2%at. de B." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/97/97134/tde-07082018-160253/.

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No presente trabalho foram produzidas duas ligas policristalinas de Fe-Ga e Fe-Ga-B para estudar a influência do boro nas propriedades piezomagnéticas da liga Fe-Ga. As propriedades piezomagnéticas foram obtidas a partir de medidas de magnetostricção (λ) em função de campo magnético (H) pelo coeficiente d33 = dλ/dH e medidas de indução magnética (B) em função da tensão compressiva aplicada (σ) pelo coeficiente d*33 = dB/dσ. A composição escolhida foi com 18,6% de Ga para ambas as ligas, que é a composição que possui o maior valor de magnetostricção na liga binária. A

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12

Portillo, Benedict I. "High temperature oxidation behavior of the Nb-W-Cr system and response of boron additions." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2008. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.

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13

McAllister, Walter Elliot. "A Critical Review of Multi-Phase Materials and Optimization Strategies for Additive Printing Technologies." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/76789.

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The focus of this thesis is the critical review of Additive Printing (AP) or 3D-printing, and optimization strategies for the introduction of new materials. During the course of tenure, four classes of solids were investigated to determine the hurdles presented from each system. Specifically, the investigation developed techniques for optimization of ink production, green-film deposition, and laser sintering parameters surrounding the Optomec AJP system (AJP). In the assessment, statistical experimental design, analysis and material characterization techniques have been utilized. Final recomme

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14

O'Brien, Jeannette M. "New Catalysts and Catalytic Methods for Cycloadditions and Conjugate Additions to Alpha, Beta-Unsaturated Carbonyls." Thesis, Boston College, 2012. http://hdl.handle.net/2345/bc-ir:103617.

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Thesis advisor: Marc L. Snapper<br>Chapter 1. A Practical Synthesis of 3-Acyl Cyclobutanones by [2 + 2] Annulation. Mechanism and Utility of the Zn(II)-Catalyzed Condensation of alpha-Chloroenamines with Electron-Deficient Alkenes. We have developed a catalytic method for the synthesis of highly functionalized 3-acyl cyclobutanones which are useful building blocks for a variety of natural products. Methods for cyclobutanone synthesis have traditionally been limited to Lewis-acid promoted rearrangement of oxaspiropentanes or cyclizations of ketene and syntheses involving keteneiminium salts hav

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15

Blank, Jonathan P. "Effect of boron additions on microstructure and mechanical properties of titanium alloys produced by the armstrong process." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1198718818.

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16

Blank, Jonathan P. "Effect of boron additions on microstructure & mechanical properties of titanium alloys produced by the Armstrong process." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1198718818.

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17

Prabhu, Avinash W. "Improving Fatigue Life of LENS Deposited Ti-6Al-4V through Microstructure and Process Control." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1388768129.

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18

Lenzo, Jansen C. Lenzo. "Evaluation of the Effect of Tungsten and Boron Additions on the Microstructure and Solidification Cracking Susceptibility of Fe-Mn-C Filler Metals." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1470829433.

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19

Khan, Rizwan Uddin Ahmad. "Electronic properties of hydrogenated amorphous carbon thin films." Thesis, University of Surrey, 2001. http://epubs.surrey.ac.uk/844559/.

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This thesis is concerned with the growth, electronic properties and modification of hydrogenated amorphous carbon films of a thickess range of 50-300 nm, which have been deposited using rf plasma-enhanced chemical vapour deposition. These films may be subdivided into two types according to the electrode on which they are grown and the resulting film properties. These are polymer-like amorphous carbon or PAC, and diamond-like amorphous carbon or DAC. PAC possesses a wide optical band gap (2.7 eV), high resistivity (1014 - 10 15 Ocm) and low density of paramagnetic defects (~ 10 17 spins cm-3).

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20

Agan, Sedat. "Thermoelectric properties of Si-based two dimensional structures." Thesis, University of Warwick, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340085.

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21

Jerems, Frank. "The magnetic and magnetoelastic properies of meld-spun MbFe2 based alloys and their temperature dependencies." Thesis, University of Hull, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.484232.

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22

Marashi, Seyed Pirooz Hoveida. "Transmission electron microscopy study of nanostructured Nd-Fe-B hard magnetic materials." Thesis, University of Sheffield, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366102.

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23

Crane, Samantha. "High resolution transmission electron microscopy analysis of the influence of grain boundary and triple grain junction crystallinity and chemistry on silicon carbide-based armor with small additions of aluminum, boron, and carbon." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0010845.

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24

Santos, Claudio Teodoro dos. "Efeito das adições de boro na magnetostricção de ligas policristalinas dos sistemas Fe-Al e Fe-Ga." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/97/97135/tde-08102013-083643/.

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Os materiais magnetostrictivos apresentam deformação elástica quando são submetidos a um campo magnético ou mudança das propriedades magnéticas quando são submetidos a uma tensão mecânica, e por isso são de grande interesse para aplicações em atuadores, sensores e aproveitadores de energia. Entretanto, os melhores materiais magnetostrictivos disponíveis são caros e frágeis. Nos últimos anos foi descoberta uma nova classe de materiais magnetostrictivos que superam este problema, a classe das ligas Fe-Ga e Fe-Al, que possuem a rara combinação de moderada magnetostricção, boas propriedades mecâni

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25

Lagrange, Jean-Pierre. "Contribution à l'étude du dopage bore, azote et phosphore dans le diamant." Université Joseph Fourier (Grenoble), 1997. http://www.theses.fr/1997GRE10210.

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Le diamant est un semi-conducteur a large bande interdite (5. 4 ev) tres prometteur en electronique a haute temperature et de forte puissance. Cependant, son utilisation est limitee par l'absence d'un dopage de type n. Nous avons etudie dans cette these le dopage au bore du diamant (type p), et l'incorporation de phosphore et d'azote dans le diamant par implantation ionique. Nous avons elabore des couches minces de diamant par depot chimique en phase vapeur assiste par plasma micro-onde. Nous avons utilise dans notre etude diverses techniques de caracterisation : spectroscopie de diffusion ram

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26

Fontaine, Frédéric. "Aspects structuraux et électriques de l'implantation ionique de bore dans des couches de diamant." Grenoble 1, 1994. http://www.theses.fr/1994GRE10226.

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Le but de cette these est d'etudier les aspects structuraux et electriques de l'implantation ionique de bore dans des couches de diamant. La these debute par la presentation des techniques d'elaborations des couches et par l'etude de l'influence de quelques parametres experimentaux. Les notions de base de l'implantation ionique et un rapide historique de l'application de cette technique au diamant font l'objet du second chapitre. Dans le troisieme chapitre, les caracterisations structurales et electriques des couches non recuites dans un premier temps, puis recuites dans un deuxieme temps, mon

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27

Brunet, Frédéric. "Texture et microstructure de films de diamant : effet du dopage au bore." Université Joseph Fourier (Grenoble ; 1971-2015), 1997. http://www.theses.fr/1997GRE10176.

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Le diamant presente des proprietes physiques intrinseques extremement attractives qui sont notamment appropriees pour des applications electroniques. Cependant, il convient de rester prudent car les caracteristiques globales des films (purete de la phase diamant, tailles des cristallites, epaisseur, morphologie, texture, contraintes internes etc. . . ) dependent fortement des conditions de croissance et conditionnent les proprietes des films. L'analyse quantitative de la texture (logiciel d'analyse de texture beartex) de films de diamant polycristallins deposes sur substrat de silicium par mpc

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28

Drbohlav, Otakar. "Matériaux magnétiques nanocristallins métastables à base de fer et de cuivre." Grenoble INPG, 1995. http://www.theses.fr/1995INPG0132.

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L'objectif de cette these etait de contribuer a l'etude et au developpement des phases et des materiaux metastables nanocristallins ferromagnetiques a base de fer et de cuivre. La formation des solutions solides cufe metastables par mecanosynthese est precedee par une nanocristallisation des constituants vers une taille de grains de 10 a 20 nm. Pour la decomposition de cette solution solide nanocristalline nous avons considere deux mecanismes de retour a l'equilibre: la decomposition spinodale et la germination et croissance. Nous avons pu mettre en evidence que seule une modelisation basee su

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29

Cali, José. "Etude des paramètres microscopiques de la piézorésistivité de couches minces polycristallines de silicium dopé bore." Université Joseph Fourier (Grenoble), 1996. http://www.theses.fr/1996GRE10055.

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L'elaboration de films minces de silicium polycristallin, obtenus par recuit thermique a 575c du silicium amorphe hydrogene depose par pecvd et dope in-situ au bore, a permis de mener une etude en fonction du dopage sur l'evolution des proprietes mecaniques (contraintes residuelles, constantes elastiques) et physico-chimiques (concentration d'hydrogene, indice de refraction) du materiau au cours du recuit. En particulier, nous montrons que le changement de signe de la courbure des plaques au cours du recuit est du a la desorption de l'hydrogene du film qui se produit a une temperature proche d

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30

Doche, Cécile. "Elaboration et caractérisation de composites céramiques réfractaires SiAlON-nitrure de bore." Grenoble INPG, 1996. http://www.theses.fr/1996INPG4204.

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Les si alon-bn sont des materiaux susceptibles de remplacer des refractaires carbones utilises en siderurgie en particulier pour l'elaboration d'acier a faible teneur en c. Deux familles de composites, obtenues par des voies d'elaboration differentes, ont ete etudiees: si#3n#4-bn par compression a chaud et si alon-bn par frittage naturel. Dans le premier cas, un precurseur organique du bn, qui semble activer le frittage, a aussi ete utilise. Pour tous ces materiaux, nous avons etudie les procedes de fabrication, les microstructures, les proprietes mecaniques, les resistances aux chocs thermiqu

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31

Mambou, Josiane. "Dopage au bore à partir de la phase vapeur : étude comparative des couches minces polycristallines et monocristallines de diamant." Université Joseph Fourier (Grenoble), 1997. http://www.theses.fr/1997GRE10055.

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Le diamant est un semi-conducteur tres prometteur pour les applications electroniques a haute temperature et de forte puissance. Neanmoins, pour optimiser les performances des dispositifs electroniques actuels, il est indispensable de mieux connaitre et de minimiser la concentration des defauts residuels qui limitent l'efficacite du dopage. Pour cela, nous avons elabore des couches minces de diamant dopees au bore, et etudie l'influence de l'incorporation de bore sur les proprietes du diamant et sur les defauts natifs. La caracterisation des couches s'est faite par differentes techniques : mic

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32

Kim, Jun-Hyeok. "Boron-based Additives in Oil and Grease for Wind Turbine Applications." Thesis, 2013. http://hdl.handle.net/1969.1/150959.

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This research investigates the tribological performance of crystalline and amorphous powders of boron as additives in lubricants: grease and mineral oil for potential applications of wind turbine. This research is focused on the wear resistance and lubricity performance of boron powders. Experimental approach was used in this research. Several experiments were conducted including API RP 7A1 thread compound test, pin-on-disk tribometer experiment, stribeck curve analysis and surface analysis. It is possible to obtain fundamental principles of boron powder as additives in lubricants from these

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33

Lin, Chih-Hsien, and 林志賢. "Effects of additives on characteristic properties of sintered boron carbide." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/36p3z6.

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34

Lin, Che-Wei, and 林哲暐. "Boron Based Electrolyte Additives and Water Based Binder in Lithium Iron Phosphate Battery." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/w8q58w.

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碩士<br>國立臺南大學<br>綠色能源科技學系碩士班<br>103<br>In recent years, lithium-ion batteries (LIBs) are currently the most widely applied power source in personal electronics. With the increasing functions of the applications, applications require more stringent performances that include high energy density, high power density, low cost, and long cycle life. To meet the increasing demand on high-performance LIBs more researches are necessary. This study has two parts. The first part forcus on boron-based electrolyte additives, BAME, PBAME and EAME to improve the cycle life of lithium iron phosphate batteries.

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Liou, Pin-You, and 劉品佑. "Effect of additives of TiB2-riched mixture on characteristic properties of sintered boron carbide." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/f4hpb7.

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碩士<br>國立臺灣海洋大學<br>材料工程研究所<br>108<br>The research aims of fabricate the body of boron carbide(B4C) ceramic marterial by using pressureless sintering method preformed separately with mix sintered aids (TiB2, TiB2-ZrB2, TiO2, ZrO2) of various Zr/Ti ratio (0, 0.17, 0.36, 0.56 and 0.78) under distinct sintering temperatures (2200ºC, 2250ºC). The sintered ceramic bodies were subsequently carried out the measurement of density and Vickers hardness, the x-ray diffractometer (XRD) examination as well as scanning electron microscope (SEM). After XRD analysis, the results showed that the secondary phase(

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Chiang, Kwo An, and 江國安. "The Influence of using Al, boron permeation and ZrO2 as additives on the Effective Life of Hot Borax Salt Bath in a TD Process." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/49094500552941516389.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>88<br>As well known among hard films coating methods, Toyota Diffusion (TD) process has its unique advantages of simple instrumentation, easy operation and lower cost as compared with Chemical Vapor Deposition (CVD) and Physical Vapor Deposition (PVD) processes. However, using hot borax salt bath in a TD process has a limitation of short effective life, and the waste treatment solution causes environmental pollution too. The objective of this study is to prolong the effective life of borax bath by using Al, boron permeation, and ZrO2 as additives in a borax salt bat

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37

JIA, TEO YONG, and 張永佳. "Boron-based ester additive for lithium ion battery." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/72898355400704324240.

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碩士<br>國立臺南大學<br>綠色能源科技學系碩士班<br>104<br>The use of boron-based compounds in lithium ion batteries as an electrolyte additive is a fast-growing area of research. In this study, the effects of boron-based esters including BAME and PBAME on the battery performance of NMC/MGP using 1.0 M LiPF6 in EC/DEC (1:1 w/w) as electrolyte cycled at 1 C (2000 mA) between 2.5 and 4.35V were investigated. 1,3-propane sultone (PS), a commonly used solid electrolyte interface(SEI) film forming additive, was also tested for comparison. The electrochemical properties of the EC/DEC electrolyte with PBAME, BAME, and PS

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CHEN, YU-QI, and 陳祐頎. "Boron Electrolyte Additive for High-voltage Cathode Materials(LiNi0.5Mn1.5O4)." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/bqe27y.

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39

Yu, Chen-Ping, and 游振平. "The influence of niobium-additive and heat treatment on the hydrogen embrittlement of ultra-high strength boron steel." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/33948157072106400308.

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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>102<br>15B30 steel, an ultra-high strength boron steel, has 2000MPa ultra-high tensile strength in martensitic state. Due to its high strength property, 15B30 steel is best used in structural steel and automotive plate. However, ultra-high strength steel is prone to hydrogen embrittlement in practical usage, which will lead to severe unpredictable fracture. The aims of this research are to build up an evaluation method of hydrogen embrittlement and find the effects niobium-additive and heat treatment on the hydrogen embrittlement of 15B30 steel. After chemical hy

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40

Chen, Te-kang, and 陳德剛. "The borone alkyl-based as an additive to electrolyte solution on LiFePO4 cathode material for lithium-ion batteries." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/18801767429332540311.

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碩士<br>國立臺南大學<br>材料科學系碩士班<br>96<br>LiFePO4 is one of the novel cathode materials for lithium ion batteries. It has various advantages including high power capability, excellent cycling performance and low cost, but LiFePO4 material shows poorly electrical conductivity and cycle fading quickly at high temperature. Herein, this report has investigated a boron alkyl-based compound as an electrolyte additive. These results show an obvious improvement of high temperature cycle performance for LiFePO4 cathode material duo to a special SEI film formed on electrode surface. Boron alkyl-based additive i

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Kekana, Thapelo Wilton. "Immunoglobulin response and growth performance of new born Holstein calves fed Garlic (Allium savitum) powder and probiotics as feed additives." Diss., 2015. http://hdl.handle.net/11602/265.

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