2013
DOI: 10.1016/j.ceramint.2013.02.071
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Influence of Fe2O3 content on the dielectric behavior of aluminous porcelain insulators

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Cited by 20 publications
(9 citation statements)
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“…Since mullite is typically produced from cheap and naturally occurring raw materials, the level and types of impurity (i.e., TiO 2 , Fe 2 O 3, alkali/alkaline earth) also play an important role in its properties. For example, Fe 3+ and Ti 4+ can enter the mullite structure by substituting for Al 3+ at the octahedral site resulting in a reduction in its mechanical strength . In addition, alkali and alkaline earth elements can react with alumina and silica producing liquid phase at lower temperatures (1450‐1550°C compared to 1587°C in pure system) …”
Section: Introductionmentioning
confidence: 99%
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“…Since mullite is typically produced from cheap and naturally occurring raw materials, the level and types of impurity (i.e., TiO 2 , Fe 2 O 3, alkali/alkaline earth) also play an important role in its properties. For example, Fe 3+ and Ti 4+ can enter the mullite structure by substituting for Al 3+ at the octahedral site resulting in a reduction in its mechanical strength . In addition, alkali and alkaline earth elements can react with alumina and silica producing liquid phase at lower temperatures (1450‐1550°C compared to 1587°C in pure system) …”
Section: Introductionmentioning
confidence: 99%
“…For example, Fe 3+ and Ti 4+ can enter the mullite structure by substituting for Al 3+ at the octahedral site resulting in a reduction in its mechanical strength. [28][29][30][31] In addition, alkali and alkaline earth elements can react with alumina and silica producing liquid phase at lower temperatures (1450-1550°C compared to 1587°C in pure system). 32,33 Spark plasma sintering (SPS), unlike conventional firing processes, employs rapid heating rates (up to 1000°C/min) in vacuum (or inert atmosphere) under an applied pressure.…”
mentioning
confidence: 99%
“…A adição de Fe 2 O 3 resultou no surgimento de uma quarta fase, hematita. De acordo com um trabalho anterior [11], em elevada temperatura, baixas concentrações de Fe 2 O 3 são normalmente dissolvidas na fase liquida da porcelana devido à formação de um eutético durante a queima. No entanto, os resultados de difração de raios X mostram [18], onde foi observada a presença de α-Fe em massas de louça sanitária queimadas em condições redutoras.…”
Section: Resultsunclassified
“…As temperaturas máximas de queima para as formulações estudadas foram definidas com base em um trabalho anterior [11]. Buscou-se manter as mesmas temperaturas para as mesmas formulações para que a atmosfera fosse à única variável durante a queima.…”
Section: Materiais E Métodosunclassified
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