2018
DOI: 10.1590/0366-69132018643692183
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Caracterização de materiais cerâmicos à base de CuCr 2 O 4 preparados pelo método da reação de combustão em solução para uso como pigmentos

Abstract: Resumo Pós cerâmicos à base de CuCr2O4 foram preparados pelo método da reação de combustão em solução a partir da calcinação no intervalo de 500 a 1100 °C, tendo por finalidade a aplicação destes como pigmento cerâmico. O estudo das propriedades estruturais, morfológicas, químicas e ópticas foi realizado por meio das técnicas de difração de raios X, refinamentos pelo método de Rietveld, microscopia eletrônica de varredura com canhão de elétrons por emissão de campo, fluorescência de raios X, reflectância difus… Show more

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Cited by 2 publications
(3 citation statements)
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“…These resulted from the applied temperature which represents a determining factor for the crystallinity of the material [24]. Coelho et al [9] pointed out that, increasing the temperature, particles tend to coalesce leading to morphologies of polyhedral irregular shapes. Temperatures up to 1100 °C also contribute to the formation of hexagonal shape particles and plate type.…”
Section: Resultsmentioning
confidence: 99%
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“…These resulted from the applied temperature which represents a determining factor for the crystallinity of the material [24]. Coelho et al [9] pointed out that, increasing the temperature, particles tend to coalesce leading to morphologies of polyhedral irregular shapes. Temperatures up to 1100 °C also contribute to the formation of hexagonal shape particles and plate type.…”
Section: Resultsmentioning
confidence: 99%
“…In such a process, a basic or acidic catalyst is used to improve the reaction rate and yield. On the other hand, when mainly homogeneous basic catalysts (NaOH and KOH) are used [9][10][11], the presence of these compounds leads to the contamination of the final product, which requires expensive washing and refining steps. Instead, heterogeneous acid catalysts do not present these problems and are still able to be recycled and reused for new reactions [9][10][11][12].…”
Section: Introductionmentioning
confidence: 99%
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