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

Artigo

Fecha

1996-03-01

Registro en:

Journal of the American Ceramic Society, v. 79, n. 3, p. 799-804, 1996.

0002-7820

http://hdl.handle.net/11449/64748

10.1111/j.1151-2916.1996.tb07949.x

WOS:A1996UB62400037

2-s2.0-0030106214

http://repositorioslatinoamericanos.uchile.cl/handle/2250/3914745

Autor

Universidade Federal de São Carlos (UFSCar)

Universidade Estadual Paulista (Unesp)

American Ceramic Society

Institución

Universidade Paulista Júlio de Mesquita Filho (Brasil)

Resumen

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.