• Caracterização de sistemas varistores a base de SnO2-MnO2. 

      Orlandi, Marcelo Ornaghi (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Ciência e Engenharia de Materiais - PPGCEM, , 02/08/2002)
      This work focussed on the effect of addition of Nb2O5 on the electrical and microestructural properties of SnO2-MnO2 based ceramics. It was also studied the effect of heat-treatments in a oxygen-rich atmosphere in these ...