Browsing Química - PPGQ by Subject "Varistores"

Now showing items 1-2 of 2

    • Estudo da influência dos óxidos de Mn, Co e Cr nas propriedades varistoras do sistema SnO2Nb2O5. 

      Bacelar Júnior, Wiss Kraw (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, , 01/12/2000)
      Aiming at obtaining SnO2 based varistor systems with a high degree of non linearity, new varistor compositions were studied, by means of doping the known SnO2.Nb2O5.CoO system with Cr2O3 and MnO2, as well as changing the ...

    • Preparação e caracterização de blendas de PANI/ABS 

      Cristovan, Fernando Henrique (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, , 16/03/2009)
      Polyaniline (PANI) chemical synthesis was monitored in situ by means of electrochemical impedance, open circuit potential (Voc) and mass variation. We verify that the final properties of the polymer could be practically ...