Nitretação a plasma de zircônia estabilizada com ítria: um estudo comparativo

Authors

DOI:

https://doi.org/10.18226/23185279.v5iss1p18

Abstract

Este trabalho apresenta a investigação experimental da nitretação da zircônia parcialmente estabilizada com ítria (3% mol), utilizando dois diferentes métodos de nitretação: i) nitretação a plasma por radiofrequência e ii) nitretação por indução eletromagnética, através de um forno de indução de alta frequência. As características morfológicas e físico-químicas da camada resultante do processo de nitretação a plasma foram analisadas por diferentes técnicas, tais como espectroscopia de retroespalhamento Rutherford e difração de raios X e análise química por espectroscopia Raman e Espectroscopia de fotoelétrons excitados por raios X. A estrutura da camada nitretada a plasma é complexa, sendo composta de zircônia tetragonal e cúbica, bem como de oxinitreto de zircônio. Este artigo descreve uma comparação entre duas técnicas de nitretação para determinar a eficiência de cada método. A técnica de nitretação a plasma por radiofrequência foi mais efetiva que por indução eletromagnética devido a incorporação de nitrogênio na matriz da zircônia.

 

http://dx.doi.org/10.18226/23185279.v5iss1p18

Author Biography

Cesar Aguzzoli, Universidade de Caxias do Sul

possui graduação em Engenharia Química pela Universidade de Caxias do Sul (2005). Mestrado em ciência dos materiais pela Universidade de Caxias do Sul e doutorado em ciência dos materiais pela Universidade Federal do Rio Grande do Sul. Tem experiência na área de Engenharia de Materiais e Metalúrgica, atuando principalmente nos seguintes temas: engenharia de superfícies, nitretação a plasma e filmes finos.

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Published

08/10/2017

How to Cite

Molossi, M., Catafesta, J., Figueroa, C. A., & Aguzzoli, C. (2017). Nitretação a plasma de zircônia estabilizada com ítria: um estudo comparativo. Scientia Cum Industria, 5(1), 18–25. https://doi.org/10.18226/23185279.v5iss1p18

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Science, Education and Engineering