Brazilian Raw Materials Doped TiO2 Based Electroceramics

A.P.P. Fontanesi; J.M. Cavenaghi; Vania Caldas de Sousa

doi:10.4028/www.scientific.net/MSF.530-531.444

Paper Titles

Microstructure Characteristics of Ce-ZTA Ceramic Composites Obtained by Liquid Phase Sintering
p.421

Design of the Particle Size Composition of an Alumina Powder Matrix for Maximum Flowability and Minimum Water Content
p.425

The Use of Granite and Kaolin Residues as Raw Materials to Obtain Ceramic Tile
p.432

Effect of the Particle Size of the Grog on the Properties and Microstructure of Bricks
p.438

Brazilian Raw Materials Doped TiO₂ Based Electroceramics
p.444

Influence of the Type of Dispersant on the Properties of Casting Slips of Porcelains with Soda-Lime Glass
p.449

Sintering Properties of ZrO₂ - 3 Mol % Y₂O₃ Obtained from Mixture of Nano and Microcrystalline Powders
p.456

Compaction Behavior Study of Powder Composed by Nanoparticle Agglomerates and Aggregates
p.461

Incorporation of Granite Waste into Vitrified Ceramic Tiles
p.467

HomeMaterials Science ForumMaterials Science Forum Vols. 530-531Brazilian Raw Materials Doped TiO2 Based...

Brazilian Raw Materials Doped TiO₂ Based Electroceramics

Abstract:

Dopants such as Ta2O5 play a major role in the formation of barriers at the grain boundary in TiO2 varistors, increasing their nonlinear coefficient and decreasing their breakdown electric field. This paper discusses the microstructural and physical properties of Ta- and Cr-doped TiO2 systems in which imported tantalum oxide was replaced with an equivalent Brazilian raw material. Preliminary results confirm that this national oxide can be utilized to obtain electroceramics such as varistors.