ZrTiO4 materials obtained by Spark Plasma Reaction Sintering

Zirconium titanate (ZrTiO4), have many attractive properties such as high resistivity, high dielectric constant, high permittivity at microwave frequencies and excellent temperature stability for microwave properties. Zirconium titanate dense materials are proposed for many structural applications, but fully reacted and completely dense pieces are difficult to obtain by conventional routes. In this work, fully dense zirconium titanate materials ( 98%) were obtained at lower temperatures (1300 1400 C) and short processing time by non-conventional technique; spark plasma-reaction sintering (SPRS). Homogeneous and stable starting powders mixture with the adequate composition was prepared from the raw materials: m-ZrO2 ( 0.3 lm) and anatase-TiO2 ( 40 nm). Dense materials were mechanically and microstructural characterised. The fracture strength was measured by biaxial testing, giving values of about 200 MPa.This study has been supported by the Spanish Ministry of Science and Innovation MAT2009-14144-C03-02, MAT2012-38364-C03-02 and MAT2012-31090. A. Borrell, acknowledges the Spanish Ministry of Science and Innovation for her Juan de la Cierva contract (JCI-2011-10498) and the Generalitat Valenciana for the BEST/2012/302 grant and the financial support for ACOMP/2012/166.Borrell Tomás, MA.; Salvador Moya, MD.; García-Rocha, V.; Fernández, A.; Gómez, A.; López-López, E.; Moreno, R. (2014). ZrTiO4 materials obtained by Spark Plasma Reaction Sintering. Composites Part B: Engineering. 56:330-335. https://doi.org/10.1016/j.compositesb.2013.08.046S3303355