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Previous issue date: 2014-08-29 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Neste trabalho ? apresentado um novo material cer?mico obtido por meio da incorpora??o de res?duos s?lidos, provenientes do setor sider?rgico e conhecido como p? de despoeiramento ? res?duo PAE ? em formula??es cer?micas ? base de argila, feldspatos s?dicos e pot?ssicos, caulim e talco. Formula??es cer?micas foram preparadas com teores de res?duos de 0% (massa b?sica ? MB), 2%, 4% e 8%, submetidas ? queima nas temperaturas de 1000?C, 1050?C, 1100?C e 1150?C, durante os per?odos de 15 min. e 120 min. As propriedades f?sico-qu?micas e mec?nicas dessas formula??es cer?micas foram determinadas em fun??o da temperatura de queima, tempo de perman?ncia em forno e do percentual de res?duos. J? as propriedades f?sico-qu?micas e mec?nicas dos materiais sinterizados foram avaliadas atrav?s de t?cnicas de an?lise qu?mica (Fluoresc?ncia de Raios-X ? FRX), distribui??o granulom?trica, superf?cie espec?fica, massa espec?fica aparente, an?lise estrutural por difra??o de raios-X (DRX) e caracteriza??o de superf?cie por microscopia eletr?nica de varredura (MEV). A resposta magn?tica, as caracter?sticas e o padr?o magn?tico das ferritas foram analisados nas condi??es de ensaio das amostras, constatando-se que a susceptibilidade magn?tica de satura??o independe da temperatura de sinteriza??o do material, estando relacionada ? sua estrutura cristalina. A partir da an?lise dos resultados, concluiu-se que o material cer?mico com melhores propriedades f?sicas e mec?nicas ? obtido quando ? adicionado 8% do res?duo PAE ? formula??o padr?o, sob o tempo de queima de 15 minutos e temperatura de 1150?C. / This work presents a new ceramic material obtained through the incorporation of solid waste from the steel industry and known as dedusting powder PAE - in ceramic formulations based on clay, potassium and sodium feldspars, kaolin and talc. Formulations were prepared with ceramic residue levels of 0% (basic mass - MB), 2%, 4% and 8%, subjected to firing at temperatures of 1000 ? C, 1050?C, 1100?C and 1150?C for periods of 15 min. and 120 min. The physicchemical and mechanical properties of these ceramic formulations were determined based on the firing temperature, residence time in the oven and the percentage of waste. Since the physicochemical and mechanical properties of the sintered materials were evaluated by chemical analysis techniques (fluorescence X-rays - FRX), particle size distribution, specific surface area, apparent density, structural analysis by diffraction of X-rays (DRX) and characterization of surface by scanning electron microscopy (SEM). The magnetic response characteristics and the pattern of magnetic ferrites of the samples were analyzed in the assay conditions, having noticed that the saturation magnetic susceptibility depend on the sintering temperature of the material and it is associated with its crystal structure. From the analysis results, it was concluded that the ceramic material with better physical and mechanical properties is obtained when the 8% from PAE residue is added to standard formulation under the burn time of 15 minutes and temperature of 1150?C.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/20670 |
| Date | 29 August 2014 |
| Creators | Borges, Aldo Nonato |
| Contributors | 06296687877, http://lattes.cnpq.br/2365059843175411, Marinho, George Santos, 35846852491, http://lattes.cnpq.br/0490476694313938, Jesus, Djane Santiago de, 40529320568, http://lattes.cnpq.br/7118650915971178, Moraes, M?rcio Luiz Varela Nogueira de, 01157194745, http://lattes.cnpq.br/2573306822477569, Nascimento, Rubens Maribondo do, Paskocimas, Carlos Alberto |
| Publisher | Universidade Federal do Rio Grande do Norte, PROGRAMA DE P?S-GRADUA??O EM CI?NCIA E ENGENHARIA DE MATERIAIS, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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