ISSN:
1662-9752
Quelle:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Thema:
Maschinenbau
Notizen:
This paper presents a systematic study about ceramics made of zirconium oxide andtitanium oxide (ZrO2-TiO2) doped with tin oxide (SnO2), strontium oxide (SrO2) and niobium oxide(Nb2O5). These ceramics can be applied as dielectric resonators in microwave systems fortelecommunications. For a good microwave performance, these ceramics must reach someparameter values as high dielectric constant and high quality factor due to the dielectric losses. Theceramics were manufactured using suitable powder mixtures of ZrO2-TiO2 with additions of 1 % ofSnO2, SrO2 and Nb2O5, resulting in four different kinds of samples for analysis. The samples werecompacted by an uniaxial (190 MPa) and an isostatic (300 MPa) pressing, sintered at 1200 °C for 3hours, characterized in the chemical compound formation using X-ray Diffraction (XRD) andscanned for microstructure densification degree and grain distribution analysis in Scanning ElectronMicroscopy (SEM). The dielectric parameters were measured using a microwave system. The maingoal of present procedure is manufacture ceramic materials for promising application as dielectricresonators
Materialart:
Digitale Medien
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/19/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.591-593.381.pdf