Metal matrix composites reinforced with diamond particles

Detalhes bibliográficos
Autor(a) principal: Aliyi, Idiris Mehamud
Data de Publicação: 2019
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10316/93570
Resumo: Dissertação de Mestrado Conjunto Europeu em Tribologia de Superficies e Interfaces apresentada à Faculdade de Ciências e Tecnologia
id RCAP_293c592ec606cc139b46eb1f6635fa1c
oai_identifier_str oai:estudogeral.uc.pt:10316/93570
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling Metal matrix composites reinforced with diamond particlesMetal matrix composites reinforced with diamond particlesSíntese mecânicatexturação de superfíciesmechanical alloyingsurface texturingDissertação de Mestrado Conjunto Europeu em Tribologia de Superficies e Interfaces apresentada à Faculdade de Ciências e TecnologiaMaterials surface modification aims for the development of new material’s surfaces throughdifferent methods to improve their structure, phase composition, tribological, physical andmechanical characteristics in addition to their chemical composition. Future of glass industrypasses through solving the plunger surfaces modification to reduce friction and wear duringblowing or pressing stage of production. This thesis aims to study the modification of plungersurfaces through the design of metal matrix composite material located on the surface of Cu-BeCo substrate, reinforced with diamond particles, which surfaces will be functionalized with a lowmelting alloy to improve the adherence of diamonds. Metal matrix from Cu-Be-Co substrate’sreinforced by of diamond particles with a low melting alloy of copper-tin-titanium.Mechanical alloying through Ball milling technique has been simultaneously used to designthe low melting Cu-Sn-Ti alloy and diamonds surface functionalization. The 4.81 gr of powderparticles ( 10 % of diamonds, and the remain composition from 75% wt of Copper 15% wt of Ti,10% of tin and 1-3% of stearic acid) have been mixed and alloyed into an 80 ml vessel. Thesubstrate Cu-Be-Co surface’s texturized by laser to produce a pattern on the surface as a matrix,then functionalized diamond particles will be introduced into the matrix by cold isostatic press andsintering. For interpretation of the result, the main experimental procedures have beeninvestigated to characterize the properties of substrate (Cu-Be-Co), functionalized diamondparticles (diamond + Cu-Sn-Ti +stearic acid) and the metal matrix’s composites reinforced bydiamond particles. Hardness testing, X-Ray Diffraction (XRD), Scanning Electron Microscopy(SEM), Energy Dispersive X-Ray Spectroscopy (EDS), and tribological testing Pin-on-desk testsperformed as characterization techniques.Despite the presence of a variety of oxides, the reinforced material exhibited better tribologicalperformance than the unreinforced Cu-Be-Co when tested on a pin-on-disk. As a consequence,significantly reduces of wear resistance and coefficient of friction attained, up to 12 times lowerwear rate and 11% reduce of COF respectively.Materials surface modification aims for the development of new material’s surfaces through different methods to improve their structure, phase composition, tribological, physical andmechanical characteristics in addition to their chemical composition. Future of glass industrypasses through solving the plunger surfaces modification to reduce friction and wear duringblowing or pressing stage of production. This thesis aims to study the modification of plunger surfaces through the design of metal matrix composite material located on the surface of Cu-BeCo substrate, reinforced with diamond particles, which surfaces will be functionalized with a lowmelting alloy to improve the adherence of diamonds. Metal matrix from Cu-Be-Co substrate’sreinforced by of diamond particles with a low melting alloy of copper-tin-titanium. Mechanical alloying through Ball milling technique has been simultaneously used to designthe low melting Cu-Sn-Ti alloy and diamonds surface functionalization. The 4.81 gr of powderparticles ( 10 % of diamonds, and the remain composition from 75% wt of Copper 15% wt of Ti,10% of tin and 1-3% of stearic acid) have been mixed and alloyed into an 80 ml vessel. Thesubstrate Cu-Be-Co surface’s texturized by laser to produce a pattern on the surface as a matrix,then functionalized diamond particles will be introduced into the matrix by cold isostatic press andsintering. For interpretation of the result, the main experimental procedures have beeninvestigated to characterize the properties of substrate (Cu-Be-Co), functionalized diamondparticles (diamond + Cu-Sn-Ti +stearic acid) and the metal matrix’s composites reinforced bydiamond particles. Hardness testing, X-Ray Diffraction (XRD), Scanning Electron Microscopy(SEM), Energy Dispersive X-Ray Spectroscopy (EDS), and tribological testing Pin-on-desk testsperformed as characterization techniques.Despite the presence of a variety of oxides, the reinforced material exhibited better tribologicalperformance than the unreinforced Cu-Be-Co when tested on a pin-on-disk. As a consequence,significantly reduces of wear resistance and coefficient of friction attained, up to 12 times lowerwear rate and 11% reduce of COF respectively.2019-07-24info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesishttp://hdl.handle.net/10316/93570http://hdl.handle.net/10316/93570TID:202307840engAliyi, Idiris Mehamudinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-05-25T10:00:22Zoai:estudogeral.uc.pt:10316/93570Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:12:28.635858Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Metal matrix composites reinforced with diamond particles
Metal matrix composites reinforced with diamond particles
title Metal matrix composites reinforced with diamond particles
spellingShingle Metal matrix composites reinforced with diamond particles
Aliyi, Idiris Mehamud
Síntese mecânica
texturação de superfícies
mechanical alloying
surface texturing
title_short Metal matrix composites reinforced with diamond particles
title_full Metal matrix composites reinforced with diamond particles
title_fullStr Metal matrix composites reinforced with diamond particles
title_full_unstemmed Metal matrix composites reinforced with diamond particles
title_sort Metal matrix composites reinforced with diamond particles
author Aliyi, Idiris Mehamud
author_facet Aliyi, Idiris Mehamud
author_role author
dc.contributor.author.fl_str_mv Aliyi, Idiris Mehamud
dc.subject.por.fl_str_mv Síntese mecânica
texturação de superfícies
mechanical alloying
surface texturing
topic Síntese mecânica
texturação de superfícies
mechanical alloying
surface texturing
description Dissertação de Mestrado Conjunto Europeu em Tribologia de Superficies e Interfaces apresentada à Faculdade de Ciências e Tecnologia
publishDate 2019
dc.date.none.fl_str_mv 2019-07-24
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10316/93570
http://hdl.handle.net/10316/93570
TID:202307840
url http://hdl.handle.net/10316/93570
identifier_str_mv TID:202307840
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
_version_ 1799134020565467136

Registros relacionados