CARACTERIZAÇÃO ESTRUTURAL DOS REVESTIMENTOS DE CARBONETO DE TUNGSTÉNIO (WC) DEPOSITADOS EM AÇO 4340 POR IRRADIAÇÃO LASER DE CO2


STRUCTURAL CHARACTERIZATION OF TUNGSTEN CARBIDE (WC) COATINGS DEPOSITED ON 4340 STEELS BY CO2 LASER IRRADIATION

Authors

DOI:

https://doi.org/10.18066/revistaunivap.v30i67.4451

Abstract

The use of coatings that imbue high hardness to industrial tools, becomes a maintenance cost management strategy. Considering the coating capacity to increase the part lifespan, especially the cutting tools and those that are subjected to high degrees of physical and thermal variation stress. Consequently, in recent years the research and development of industrial coatings has grown, aiming the application of coatings with high hardness for cutting tools with metal matrices to form composites. In this sense, tungsten Carbide (WC) coatings are one of the most used in power generation systems, aerospace, automotive and transportation industry due to their properties, which combine high hardness and wear resistance. The present work aims to verify the improvement in mechanical properties of the AISI 4340 steel through the deposition of WC coating sprayed by pneumatic gun and subsequent CO2 laser irradiation. The specimens were characterized by scanning electron microscope, optical microscope and micro-indentation test (microhardness and elasticity modulus measurements). The results show that it is possible to obtain coatings with high hardness, without pores and metallurgically bound to the substrate

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Author Biographies

Silvelene Alessandra Silva, INPE

Graduated in Electrical Engineering from the University of Vale do Paraíba - UNIVAP (2005) Master and PhD in Space Engineering and Technology from the National Institute for Space Research (INPE) in the area of Science and Technology of materials and sensors (2015). He has experience in design, construction and characterization of electronic circuits, synthesis and characterization of nanoparticulated alumina powders, microwave heat treatments of powders and fabrication and characterization of ceramic ambient humidity sensors in the form of films with implanted gold electrodes. Postdoctoral research at the Institute for Advanced Studies (IEAv) and INPE in the area of coating, materials processing and structuring of mechanical parts with continuous and pulsed laser acting until 2022.

Ms. Vitor, Instituto de Estudos Avançados

Mestrando em Ciências e Tecnologias Espaciais

Dr. Dyer, Instituto Tecnológico de Aeronáutica

Engenheiro Ambiental pela Universidade Estadual Paulista UNESP, campus Sorocaba (2012), Mestre em Ciências, na área de Infraestrutura Aeronáutica pelo Instituto Tecnológico de Aeronáutica ITA (2018), Doutor em Ciências, na área de Infraestrutura Aeronáutica pelo Instituto Tecnológico de Aeronáutica ITA (2022). Atualmente é pesquisador no Instituto de Estudos Avançados. Integrando a equipe do projeto: Aplicação de revestimentos de barreira térmica em turbina de motor foguete a propulsão líquida (Chamada CNPq N20/2022 Faixa A), como bolsista (DTI-A-A). Atuando em diversas frentes do desenvolvimento do projeto. Destacando a análise e interpretação de resultados laboratoriais de revestimentos, como: preparação metalográfica de amostras, analise microestrutural, análise mecânica de superfícies (dureza, desgaste e ancoramento), resistência à corrosão e propriedades cristalográficas. Possui treinamento em equipamentos de microscopia óptica, testes de tribologia e dureza. Destas frentes de atuação, também se destaca o desenvolvimento de programações (linguagem PHYTON) no Software Robo DK. Possui treinamento nesta ferramenta, além do software Top Solid. Atua na coordenação e orientação de alunos de Iniciação científica, no âmbito do desenvolvimento de práticas laboratoriais e redação de artigos e relatórios. Participou ativamente no lançamento das frentes de parametrização de processos por laser cladding para revestimentos de aço ferramenta H13, pós de Ni-Ti, NiCrAlY e outros pós cerâmicos. Participando com trabalhos em congressos. Também possui experiência na área de infraestrutura e meio ambiente. Especificamente no emprego de resíduos sólidos em projetos de construção civil como material de preenchimento. Registrou uma patente e publicou diversos trabalhos em importantes periódicos internacionais nesta área. Além de ter participado com trabalhos em congressos nacionais e internacionais

Dr. Getúlio, Instituto de Estudos Avançados

Bacharel em Física pela Universidade de Taubaté (1988), mestrado em Física pelo Instituto Tecnológico de Aeronáutica (1997) e doutorado em Ciências, na área de Tecnologia Nuclear- Materiais pelo Instituto de Pesquisas Energéticas e Nucleares (2004). Atualmente é pesquisador do Centro Técnico Aeroespacial. Tem experiência na área de Física, com ênfase em Instrumentação Específica de Uso Geral em Física e desenvolvimento de máquinas de sinterização seletiva laser e dispositivos de aspersão a frio. Atua na área de processamento de materiais por lasers, onde possui trabalhos publicados na área de sinterização de compactos intermetalicos, tratamento térmico aço de AISI M2 e aço carbono, produção e caracterização de materiais particulados por lasers. Possui experiência profissional nas seguintes áreas: protective coating, revestimentos cerâmicos, sinterização por lasers, laser sintering, laser clading, laser hardening, tratamento térmico com laser, cadinhos para evaporação, têmpera por laser. Membro da Associação Brasileira de Metalurgia, Materiais e Mineração - ABM

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Published

2024-06-26

How to Cite

Silva, S. A., Ribeiro Jardim, V., Paiva Oliveira Leite Dyer, P., & de Vasconcelos, G. (2024). STRUCTURAL CHARACTERIZATION OF TUNGSTEN CARBIDE (WC) COATINGS DEPOSITED ON 4340 STEELS BY CO2 LASER IRRADIATION. Revista Univap, 30(67). https://doi.org/10.18066/revistaunivap.v30i67.4451

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Ciências Exatas e da Terra

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