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Dissertations / Theses on the topic 'Surface wear resistance'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Mckeown, Nicola. "Laser surface engineering for improved wear resistance." Thesis, University of Liverpool, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.317168.

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2

Bykov, P. A., T. A. Chernysheva, and L. I. Kobeleva. "Surface layers by wear tests of particulate metal matrix composites." Thesis, Видавництво СумДУ, 2011. http://essuir.sumdu.edu.ua/handle/123456789/20526.

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The dry sliding wear behaviour of varying weight fraction of SiC particles reinforced AK12M2MgN aluminum alloy metal matrix composites (MMCs) fabricated by a vortex method was investigated using a pin-on-disk tester CETR UMT. The effect of SiC particle content on the friction coefficient and wear resistance has been evaluated. The formation on friction surface of mechanical mixed layers consisting of debris and fragmented SiC particles was indentified using a optical and a scanning electron microscopes. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handl

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3

Кирилів, Ярослав Богданович, Володимир Іванович Кирилів, Богдан Романович Ціж, and Максимів Ольга Володимирівна. "Resistance of surface nanocrystalline and ultrafine-grained structures to wear and cavitation erosion damage." Thesis, LLC «Computer-publishing, information center», Kiev, Ukraine, 2020. http://hdl.handle.net/123456789/6943.

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4

Kami, Pavani. "Surface Modifications to Enhance the Wear Resistance and the Osseo-integration Properties of Biomedical Ti-alloy." Thesis, University of North Texas, 2013. https://digital.library.unt.edu/ark:/67531/metadc500110/.

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The current study focuses on improving the wear resistance of femoral head component and enhancing the osseo-integration properties of femoral stem component of a hip implant made of a new generation low modulus alloy, Ti-35Nb-7Zr-5Ta or TNZT. Different techniques that were adopted to improve the wear resistance of low-modulus TNZT alloy included; (a) fabrication of graded TNZT-xB (x= 0, 1, 2 wt%) samples using LENS, (b) oxidation, and (c) LASER nitriding of TNZT. TNZT-1B and TNZT-O samples have shown improved wear resistance when tested against UHMWPE ball in SBF medium. A new class of bio-ce

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5

Asthana, Pranay. "Micro- and nano- scale experimental approach to surface engineer metals." Thesis, Texas A&M University, 2003. http://hdl.handle.net/1969.1/5756.

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This thesis includes two parts. The first part reviews the history and fundamentals of surface science and tribology. The second part presents the major research outcomes and contributions. This research explores the aspects of friction, wear, and surface modification for tribological augmentation of surfaces. An effort has been made to study these aspects through gaining insights by fundamental studies leading to specific practical applications in railroads. The basic idea was to surface engineer metals for enhanced surface properties. A micro- and nano- scale experimental approach has been u

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6

Silva, Cristina Vitorino da. "Estudo da influência das propriedades relacionadas à superfície e à matriz na resistência à abrasão de concretos para pisos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/139378.

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O desgaste superficial por abrasão é uma manifestação patológica que decorre do atrito entre partículas secas e a superfície do material, causando uma perda progressiva das camadas mais externas da estrutura. Entender esse mecanismo de deterioração e ainda os parâmetros que influenciam a sua ocorrência são preocupações válidas, visto que ele compromete a durabilidade e a funcionalidade de estruturas, tais como pisos de concreto. Além disso, a correção desta manifestação patológica exige gastos elevados com reparo ou substituição do concreto e, dessa maneira, a necessidade de maiores estudos bu

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7

Van, Bouwelen Franciscus Maria. "Mechanically induced degradation of diamond." Thesis, University of Cambridge, 1996. https://www.repository.cam.ac.uk/handle/1810/251599.

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8

Silva, Cristina Vitorino da. "Contribuição ao estudo do desgaste superficial por abrasão em concretos empregados em pisos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2011. http://hdl.handle.net/10183/32017.

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O desgaste superficial constitui uma das manifestações patológicas mais recorrentes em pisos de concreto. A presença de tal manifestação patológica, proveniente do processo abrasivo, é muito preocupante, uma vez que implica em altos custos para reparar ou substituir este concreto danificado. Portanto, a realização de estudos que buscam avaliar a influência do proporcionamento e tipo de alguns materiais que constituem o traço de concreto, comumente empregado em pisos, é considerada extremamente relevante, no intuito de reduzir a tendência de desgaste dos compósitos. Neste particular, foram aval

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9

Куркчи, Євгеній Петрович, Евгений Петрович Куркчи та Yevhenii Petrovych Kurkchy. "Анализ методов поверхностного упрочнения, применяемых для увеличения износостойкости пар трения". Thesis, Сумский государственный университет, 2014. http://essuir.sumdu.edu.ua/handle/123456789/39651.

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В большинстве газовых и воздушных компрессоров в цилиндро-поршневой группе используются материалы пар трения, позволяющие полностью исключить введение смазки в рабочую зону. Однако существует проблема недостаточной очистки перекачиваемого газа, из-за чего абразивосодержащие примеси шаржируют поверхность колец и в процессе трения такой конструкции происходит ускоренный износ поверхности втулки цилиндра.

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10

OLIVEIRA, Marcelo dos Anjos. "Desgaste abrasivo do aço Hadfield com diferentes teores de carbono em abrasômetro do tipo pino-disco." Universidade Federal de Pernambuco, 2016. https://repositorio.ufpe.br/handle/123456789/18671.

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Submitted by Fabio Sobreira Campos da Costa (fabio.sobreira@ufpe.br) on 2017-04-27T15:18:52Z No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Marcelo Oliveira.pdf: 7846435 bytes, checksum: 4659cf7d50095ccabdf49ebcc00f0bba (MD5)<br>Made available in DSpace on 2017-04-27T15:18:52Z (GMT). No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Marcelo Oliveira.pdf: 7846435 bytes, checksum: 4659cf7d50095ccabdf49ebcc00f0bba (MD5) Previous issue date: 2016-08-31<br>A presente pesquisa teve como objetivo, inv

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11

Sharkey, Sarah Jane. "Laser surface engineering and process control for wear resistant surfaces." Thesis, University of Liverpool, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321167.

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12

Gastaldo, Felipe Toloi. "Efeitos do tratamento de superfície a laser na microestrutura e na resistência ao desgaste do aço inoxidável martensítico." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/265468.

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Orientador: Maria Clara Filippini Ierardi<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica<br>Made available in DSpace on 2018-08-16T18:14:43Z (GMT). No. of bitstreams: 1 Gastaldo_FelipeToloi_M.pdf: 3864276 bytes, checksum: e93dd961bf6a205b380e820ec16cb28f (MD5) Previous issue date: 2010<br>Resumo : No presente trabalho o aço inoxidável martensítico ASTM 487 CA6NM utilizado na fabricação de eixos de turbinas, foi submetido ao tratamento de superfície por refusão a laser com o intuito de analisar as modificações microestruturais resultantes e seu

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13

Grandin, Martina. "Tribology of Metal-Graphite Composites : A Study of Sliding Electrical Contact Surfaces." Doctoral thesis, Uppsala universitet, Tillämpad materialvetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-329860.

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An environmentally sustainable production of electrical power is important for preserving the earth’s natural resources. In order to utilize this power as efficiently as possible, it is of great importance to minimize the losses, for example in sliding electrical contacts. A sliding electrical contact is where current is transferred from one rotating to one stationary component and power is lost due to friction and contact resistance. Also in some signal applications, high performance sliding contacts are crucial to ensure stable signal transfer with low noise. Although sliding electrical cont

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14

Saker, Abdelhamid. "Étude des produits de pulvérisation cathodique magnétron et de nitruration a basse température des aciers inoxydables austénitiques dans des plasmas réactifs contenant de l'azote." Vandoeuvre-les-Nancy, INPL, 1993. http://www.theses.fr/1993INPL017N.

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Afin d'améliorer les propriétés mécaniques et maintenir la résistance en corrosion des aciers austénitiques du type aisi 310, 316l et 304, des couches sont réalisées par nitruration ionique a basse température (<700k) dans des plasmas h#2-n#2. Elles sont exemptes de nitrures; leur concentration en azote présente un profil de concavité inverse de celui habituellement obtenu a des températures de nitruration conventionnelles. La microstructure et la stabilité thermique des phases métastables formées sont comparées à celles de dépôts d'aciers inoxydables enrichis en azote, obtenus par pulvérisati

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15

Литвиненко, О. А., Є. В. Штефан та Б. С. Пащенко. "Особливості зношування конструкційних матеріалів у харчових середовищах". Thesis, Сумський державний університет, 2017. http://essuir.sumdu.edu.ua/handle/123456789/66600.

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Термін «інженерія поверхні металів» охоплює науково-технічні аспекти утворення зносостійких поверхневих шарів деталей в тому числі захисних покриттів. Однак в умовах харчових виробництв до названих вище вимог до антифрикційних і зносостійких матеріалів додається здатність матеріалів задовільно працювати в умовах контакту з технологічними середовищами при неможливості змащування мастилами.

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16

Lagrange, Laurent. "Caractérisation microstructurale et tribologique de revêtements composites à matrice métallique élaborés sous faisceau laser par projection coaxiale de poudre." Vandoeuvre-les-Nancy, INPL, 1997. http://docnum.univ-lorraine.fr/public/INPL_T_1997_LAGRANGE_L.pdf.

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Nous présentons une étude sur l'élaboration et sur la résistance a l'usure de revêtements composites à matrice métallique (base Ni). On réalise des couches épaisses de rechargement à l'aide d'un jet de poudre de particules de WC de granulométrie contrôlée, formé par une buse originale, coaxiale au faisceau laser assurant la fusion du liant et superficielle du substrat métallique. Les surfaces ainsi rechargées sont rectifiées avant utilisation. On étudie d'abord le jet de gaz de transport avec et sans poudre afin d'optimiser le procédé, notamment en matière de rendement de poudre déposée. Une a

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17

Paul, Arindam. "Development and evaluation of NiW alloy and NiW-TiO2 composite coatings on the mechanical properties, tribological performance and the corrosion resistance of bearing steel." University of Akron / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=akron1618853855083468.

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18

Bédouin, Yvan. "Nitruration d'un alliage titane-niobium à bas module pour l'implantologie orale." Thesis, Rennes 1, 2016. http://www.theses.fr/2016REN1B032.

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Ce travail a été réalisé dans le cadre d’une collaboration entre le laboratoire de Chimie-Métallurgie de l’INSA de Rennes et le laboratoire de biomatériaux en site osseux (LBSO) de la Faculté de Chirurgie Dentaire de l’Université de Rennes1. L’alliage de titane de type β Ti-27Nb (% at.) a été nitruré pour des applications en implantologie orale parce qu'il possède un bas module d'élasticité, proche de celui de l’os et qu’il est composé uniquement d'éléments biocompatibles. Dans un premier temps l’alliage Ti-27Nb a été synthétisé grâce à un four à induction magnétique selon la technique de fusi

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19

Pongrácz, Jakub. "Vliv modifikace HVOF nástřiku slitiny NiCrBSi elektronovým paprskem na jeho strukturu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-400445.

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This thesis deals with surface re-melting by electron beam of thermal sprayed material NiCrBSi by method HVOF. The microstructure, chemical and phase composition, hardness and abrasive wear resistance were evaluated in depending on the electron beam parameters and modes of the electron beam 6-poinst and line. Observed microstructure was better after both methods of re-melting. The splats were not observed, coating porosity decreased and structure was more homogenous. Structure and phase analysis was acquired by light microscopy, scanning electron microscopy, energy dispersive spectroscopy and

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Varnauskas, Valentinas. "Creation of hardfaced surfaces and investigation of its wear resistance." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2009. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2009~D_20090309_142113-92955.

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This thesis presents research in the area of creation of coated electrodes for hard surfacing. The principal subject of research is coated electrodes and metals deposited by means of them. The main objective of the thesis is to develop new electrode coatings, to obtain the metal having the proper mechanical properties which enable to produce the surface layers with acquire strength and resistance to abrasive wear. The application area of newly developed welding electrodes is surfacing of working parts of agricultural, mining and road-building machines. The thesis also deals with optimization o

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21

Scholvin, Dirk. "Wear resistant nanostructured diamondlike carbon coatings on Ti-alloy." Thesis, Available online, Georgia Institute of Technology, 2004:, 2003. http://etd.gatech.edu/theses/available/etd-04082004-180353/unrestricted/scholvin%5fdirk%5f200312%5fms.pdf.

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22

Abbas, Ghazanfar. "Laser surface cladding/particle injection of wear resistant alloys and composites." Thesis, Imperial College London, 1990. http://hdl.handle.net/10044/1/47730.

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23

Ardila, Miguel Angel Narvaez. "Influência da natureza e topografia da superfície na micro-abrasão e micro-abrasão-corrosão." Universidade Federal de Uberlândia, 2017. http://dx.doi.org/10.14393/ufu.te.2018.24.

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CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>CNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>O trabalho tem como objetivo contribuir ao entendimento do efeito das caraterísticas superficiais no desgaste abrasivo com e sem efeito corrosivo. Utilizou-se o equipamento de micro-abrasão-corrosão desenvolvido no Laboratório de Tribologia e Materiais (LTM). Foi utilizado nos testes: amostras de aço inoxidável austenítico AISI 304, partículas abrasivas de sílica e velocidade de rotação de 150 rpm. Para a parte corrosiva foi usada solução eletrolítica c

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24

Popoola, Oludélé Olusègun. "Amorphisation et précipitation superficielles induites par implantation ionique dans les alliages NiTi équiatomiques : application aux propriétés tribologiques." Poitiers, 1988. http://www.theses.fr/1988POIT2292.

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Mise en evidence par microscopie electronique en transmission, spectrometrie sims et photoelectron d'une amorphisation superficielle et de la formation de fins precipites cristallins tin::(x) dans le cas d'une implantation, d'azote. Influence de la temperature et de la dose d'ion sur l'epaisseur de la couche. Correlation entre la microstructure d'implantation et les proprietes tribologiques. Le coefficient de frottement se trouve reduit et la resistance a l'usure se trouve amelioree de facon durable. L'initiation et la propagation des processus de degradation sont ainsi ralenties

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25

Babu, Sailesh. "A material based approach to creating wear resistant surfaces for hot forging." Connect to this title online, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1101836555.

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Thesis (Ph. D.)--Ohio State University, 2004.<br>Title from first page of PDF file. Document formatted into pages; contains xxii, 185 p.; also includes graphics (some col.). Includes bibliographical references (p. 178-185).

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26

Liao, Jiunn-Der. "Modifications physico-chimiques et mécaniques du polyéthylène et du polypropylène par implantation ionique, plasma micro-ondes,bombardement d'électrons et irradiation gamma." Grenoble INPG, 1995. http://www.theses.fr/1995INPG4202.

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La surface d'une polyolefine traitee par plasma micro-ondes ou par faible dose d'implantation ionique d'azote devient mouillable. Pour obtenir des peroxydes polarisables sur une polyolefine, un traitement par plasma d'argon de courte duree est suffisant. Les analyses xps couplees avec les resultats obtenus en resonance paramagnetique electronique, par decomposition des peroxydes, par mesures de mouillabilite et par l'exploitation des spectres actifs en infrarouge ont montre que les structures oxydees, formees par differentes techniques de traitement, jouent un role important pour interpreter l

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27

Ebert, Daniel Ray. "Superhydrophobic, Biomimetic Surfaces with High and Low Adhesion, Optical Transmittance, and Nanoscale Mechanical Wear Resistance." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1475516443008829.

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28

Dingremont, Norbert. "Analyse de la compatibilité des traitements de nitruration par voie ionique avec les dépôts par plaquage ionique : application à l'acier de construction 35NCD16 et à l'acier d'outillage pour travail à chaud Z38CDV5." Vandoeuvre-les-Nancy, INPL, 1996. http://www.theses.fr/1996INPL110N.

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Afin de déterminer dans quelle mesure les traitements de nitruration par voie ionique peuvent être compatibles aves les dépôts par plaquage ionique, nous avons analysé l'influence de la procédure de dépôt sur la stabilité des couches nitrurées. Ce travail a permis de montrer que le cycle thermique associé à la procédure de dépôt peut conduire à lui seul à la déstabilisation des couches de combinaison et seulement celles-ci. Dans ce cas, la stabilité thermique intrinsèque des couches de combinaison est mise en cause. Nous avons également mis en évidence la déstabilisation de ces mêmes couches l

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29

Костик, Катерина Олександрівна. "Наукові основи технологій поверхневого зміцнення деталей машин порошковими сумішами керованого складу". Thesis, Національний технічний університет "Харківський політехнічний інститут", 2019. http://repository.kpi.kharkov.ua/handle/KhPI-Press/42416.

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Дисертація на здобуття наукового ступеня доктора технічних наук за спеціальністю 05.02.08 – технологія машинобудування (13 – механічна інженерія). – Національний технічний університет «Харківський політехнічний інститут», Харків, 2019. У дисертаційній роботі проведено комплекс досліджень, спрямованих на вирішення важливої науково-технічної проблеми в області технології машинобудування: розробка інноваційних та короткотривалих технологій поверхневого зміцнення деталей машин порошковими сумішами керованого складу для забезпечення експлуатаційних властивостей виробів на високому рівні при значном

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Костик, Катерина Олександрівна. "Наукові основи технологій поверхневого зміцнення деталей машин порошковими сумішами керованого складу". Thesis, Національний технічний університет "Харківський політехнічний інститут", 2019. http://repository.kpi.kharkov.ua/handle/KhPI-Press/42415.

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Дисертація на здобуття наукового ступеня доктора технічних наук за спеціальністю 05.02.08 – технологія машинобудування (13 – механічна інженерія). – Національний технічний університет «Харківський політехнічний інститут», Харків, 2019. У дисертаційній роботі проведено комплекс досліджень, спрямованих на вирішення важливої науково-технічної проблеми в області технології машинобудування: розробка інноваційних та короткотривалих технологій поверхневого зміцнення деталей машин порошковими сумішами керованого складу для забезпечення експлуатаційних властивостей виробів на високому рівні при значном

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Strahin, Brandon L. "WEAR AND CORROSION RESISTANT TRIBOLOGICAL SURFACE TREATMENTS FOR TITANIUM ALLOYS: EVALUATION OF COMPLIMENTARY AND SUPPLEMENTARY DUPLEX TREATMENT PROCESSES." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1555110923128525.

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32

Silva, Fernando Nunes da. "Desgaste corrosivo-cavitativo-erosivo de um a?o-carbono em meio aquoso com fra??es de sal (NaCl), CO2 e particulados s?lidos (SiO2)." Universidade Federal do Rio Grande do Norte, 2012. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15699.

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Made available in DSpace on 2014-12-17T14:58:19Z (GMT). No. of bitstreams: 1 FernandoNS_DISSERT.pdf: 5044327 bytes, checksum: 66e88407297dda873c6a6d882b6de312 (MD5) Previous issue date: 2012-08-27<br>Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico<br>A batch of eighty-four coupons of low carbon steel were investigated at laboratory conditions under a corrosive, cavitative-corrosive (CO2) and corrosive-erosive (SiO2 + CO2) in an aqueous salt solution and two levels of temperature. The following measurements were made on Vickers (HV0,05, HV0,10, HV0,20) Microhardness tests at thr

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Lerebours, Augustin. "Use of additive manufacturing techniques for the production of customized implants with complex geometry : application to reparative hand surgery." Thesis, Compiègne, 2019. http://www.theses.fr/2019COMP2531.

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L’arthrose est une pathologie entraînant la dégénération des surfaces articulaires. Dans le cas particulier de l’articulation trapézo-métacarpienne, l’arthrose déforme de façon irréversible l’os trapèze entraînant perte de la mobilité et amoindrissement de la force de préhension couplé à des douleurs à la base du pouce. Les solutions thérapeutiques ne sont cependant pas satisfaisantes avec des reprises fonctionnelles limitées entraînant une perte de qualité de vie du patient. Dans le cas de la main, la personnalisation des implants semble être pertinente du fait de la grande variabilité des ca

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Spike, M., and R. Miles. "The fundamental thermodynamic relation on contact surfaces of multicomponent nanocomposite coatings with hierarchical and adaptive behavior." Thesis, Sumy State University, 2016. http://essuir.sumdu.edu.ua/handle/123456789/47079.

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The increasing demands of modern engineering have spawned the development of new advanced materials for use. The development of advanced materials can be considered to be a typical problem of engineering optimization. In this process, an integrated engineering–physical approach is used to develop novel wear-resistant materials. Until now only a limited amount of investigations have been performed on the progression of the self-organization process during friction. Moreover studies made so far focused mostly on the characteristics of tribo-films.

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Ванієв, Ельдар Рустемович, Э. Р. Ваниев та E. R. Vaniyev. "Зміцнююча дія МОТС при фрезеруванні сталей аустенітного класу". Thesis, Тернопільський національний технічний університет ім. Івана Пулюя, 2014. http://elartu.tntu.edu.ua/handle/123456789/5010.

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Робота виконана на кафедрі технології машинобудування Республіканського вищого навчального закладу «Кримський інженерно-педагогічний університет» Міністерства освіти і науки України. Захист відбувся 4 листопада 2014 р. об 11 годині на засіданні спеціалізова-ної вченої ради К 58.052.03 у Тернопільському національному технічному універси-теті імені Івана Пулюя за адресою: 46001, м. Тернопіль, вул. Руська, 56, корп. 2, ауд. 79 З дисертацією можна ознайомитися в бібліотеці Тернопільського національно-го технічного університету імені Івана Пулюя за адресою: 46001, м. Тернопіль, вул. Руська, 56<b

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Liao, Wei-Hong, and 廖偉宏. "Investigation into the High Temperature Wear Resistance and Oxdiation of Wear Resistant Surface Coatings to Titanium Alloy." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/34456075050949185628.

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碩士<br>義守大學<br>材料科學與工程學系碩士班<br>96<br>To investigate the oxidation resistance and .wear resistance to titanium under the high temperature operation, three PVD sputtered hard coatings (TiCN, TiAlN, AlCrN) are selected for evaluation. High temperature wear resistance (HTWR) test is conducted by a heated pin-on-disk machine with the three operation temperatures (room temperature, 150 ℃and 300℃). Oxidation resistance test is conducted by three high temperatures (900℃, 1000℃, 1100℃).heat treatment for the three coatings. As the tests are accomplished, surface observation of those samples (including

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CHIANG, YAO-TUN, and 蔣耀墩. "Improve Surface Wear Resistance Of Carbon Fiber/Epoxy Composites." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/2u5z63.

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Liu, Chia-Jung, and 劉家融. "The wear resistance of laser surface alloying on 6061 aluminum alloy." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/88934495737960943781.

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碩士<br>國立成功大學<br>材料科學及工程學系碩博士班<br>93<br>Aluminum alloys have been considered to be one of the most versatile useful materials because of to interesting mechanical properties, such as high strength-weight ratio, high electrical conductivity, good themal conductivity, easy to shape, and relatively inexpensive. However, the low hardness, low melting point of such alloys result in poor friction properties and heat resistance. The YAG laser alloying is one of the efficient method to improve the surface wear resistance. This paper is using YAG laser alloying Ni-based and Co-based powder on the surf

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Simmons, Nathan D. "Evaluation of cavitation-corrosion resistance and reciprocating wear resistance of surface coated and cryogenically treated silicon brass." 2008. http://etda.libraries.psu.edu/theses/approved/PSUonlyIndex/ETD-2701/index.html.

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wang, Yung-Hsiang, and 王永祥. "The Effects of Thermal Erosion and Wear Resistance on AISI H13 Tool Steel by Multiple Surface Treatments." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/b89jkq.

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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>98<br>The experiment is used of different surface treatments and combinations, then to evaluate and improve the tool life of die casting materials. This research compares of erosion and wear resisatnce of A380 alloy via different surface treatment of untreated, oxynitriding, CrN coating, and CrN coated with oxynitriding specimens. The minimun melt loss was appeared in multiple surface treatments of CrN coated with oxynitriding after 3 hours eoosion test. It showed that only has 0.8% of weight lost, however the untreated specimen was 3.2%. The experimental result

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Liu, Yao-Chun, and 柳耀鈞. "The Study of Alloying Elements on Wear Resistance Behavior in Ductile Iron Surface Clad with Ceramics Powder." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/zun5wu.

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碩士<br>國立臺灣科技大學<br>機械工程系<br>99<br>In this thesis, ceramic powders and ceramic powders mixed with different alloy elements were cladded on ductile iron surfaces by gas tungsten arc welding(GTAW) process to investigate the wear behavior of the clad layers. SiC was the basal powder, and the elements of Cr, Mo and Ni were added to discuss the differences of the clad layer by different elements, which includes microstructure and composition in clad layer. Microstructures of the clad layers were analyzed by a field-emission scanning electron microscope (FE-SEM), a Vickers microhardness tester, an el

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Wu, Yuh-Feng, and 吳雨峯. "The effects of alloy elements and laser scanning processes on microstructure and wear resistance of Si3N4 cladding layer on stainless steel surface." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/04235972760704437874.

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碩士<br>國立臺灣科技大學<br>機械工程系<br>91<br>The major objective of this thesis is to investigate the stainless steel wear resistance, which improved by Si3N4 ceramic powder cladding with laser surface cladding technique. In this paper three types of laser scanning processes and four types of alloy elements, such as Mo、Co、Cr、W, was prepared for coating process , which were used to study the influence of various alloy powders and laser scanning processes effect on cladded surface wear resistance ability. The microstructure of cladding layer was characterized by scanning electron microscope (SEM) , X-ray di

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Lin, Hung-wen, and 林鴻文. "The Effect of the Surface Property of Cylinder Wall and the Geometrical Shape of Piston Ring on Engine Wear Resistance and Performance." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/15244685163805869472.

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碩士<br>國立臺灣科技大學<br>機械工程系<br>88<br>Weather the lubrication of engine can be effected by the surface property of cylinder wall and the geometrical shape of piston ring or not has been researched in this study. Here, we try different alternated surface property of cylinder wall combining the geometrical shape of piston ring in order to improve wearing resistance, reduce oil consumption and lower loss rate by blowing. Experiments design by Taguchi parameter method. Firstly, we change the contour of piston ring and the surface roughness of cylinder wall to find out the factors effecting on oil consu

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Wu, Tai-yuan, and 伍泰源. "The Study of Alloying Elements on Wear Resistance Behavior in Low Carbon Steel Surface Clad with Ceramics Powder by Different Methods of Cooling." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/07389774229155075900.

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碩士<br>國立臺灣科技大學<br>機械工程系<br>102<br>In this thesis, three types of materials are applied to clad onto AISI 1020 carbon steel by a gas tungsten arc welding (GTAW) process. Those three materials are titanium carbide (TiC) mixed with cubic boron nitride (cBN), copper powder and aluminum nitride (AlN) mixed with Ni, Co, Ti and C powders. During cladding, specimens were cooled by air or copper blocks. After cladding, an optical microscope (OM), a scanning electron microscope (SEM) with energy dispersive X-ray spectrometer (EDS), an electron probe microanalyzer (EPMA) and an X-ray diffractometer (XRD)

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