Effect of cobalt(II) oxide and manganese(IV) oxide on sintering of tin(IV) oxide

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Cerri, Jose Alberto
Leite, Edson Roberto
Gouvêa, Douglas
Longo, Elson [UNESP]
Varela, José Arana [UNESP]
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Additions of 0.5 to 2.0 mol% of CoO or MnO2 onto SnO, promote densification of this oxide up to 99% of theoretical density. The temperature of the maximum shrinkage rate (TM) and the relative density in the maximum densification rate (p*) during constant sintering heating rate depend on the dopant concentration. Thus, dopant concentration controls the densifying and nondensifying mechanisms during sintering. The densification of SnO2 witih addition of CoO or MnO, is explained in terms of the creation of oxygen vacancies.
Additives, Cobalt compounds, Composition effects, Densification, Manganese compounds, Oxygen, Shrinkage, Sintering, Temperature, Cobalt oxide, Dopant concentration, High density ceramic bodies, Manganese oxide, Oxygen vacancies, Tin oxide, Tin compounds
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Journal of the American Ceramic Society, v. 79, n. 3, p. 799-804, 1996.