Análise de inclusões não metálicas em aço por espectrometria de emissão óptica associada ao sistema Spark-DAT

• Ano de defesa: 2013
• Autor(a) principal: Maria Cecília Junqueira Murta
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Minas Gerais; UFMG
• Palavras-chave em Português: Materiais e de Minas; Engenharia Metalúrgica; Engenharia metalúrgica
• Link de acesso: http://hdl.handle.net/1843/BUBD-9DKEMQ

The optical emission spectrometry is an analysis methodology of solid samples used by industries to control the chemical composition of their materials. In this technique, a spark is directed to the sample causing the excitation of electrons from its elements and the subsequent radiation emission that is converted to chemical concentration. A recent advance achieved in this area was the development of the Spark-DAT system. This tool complements the optical emission spectrometry allowing the non metallic inclusions analysis in steel. This is a progress in the inclusions investigation, which is currently performed by the optical microscopy and scanning electron microscopy. Both techniques considered consecrated, but which require a longer preparation and analysis cant be applied during the production process. The purpose of this study was to develop a methodology for inclusions analysis using the software Spark-DAT and compare the results obtained with classical techniques of analysis, thus to validate this system for use in inclusions control during steel manufacturing.