ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The sintering dynamics, microstructures and microwave dielectric properties of Bi2O3 andMnO2 co-doped [(Pb,Ca) La](Fe,Nb)O3 (PCLFN) ceramics were investigated. Bi2O3 and MnO2dopants effectively enhanced bulk densities and reduced sintering temperatures by about 100~140°C.Sintering procedure had significant effect on grain size and porosities of ceramics. Investigation ofmicrostructures revealed that the grain growth was controlled by either volume diffusion orsecond-order interface mechanism in present ceramics. The potential microwave dielectric propertiesof εr=91.1,Qf=4870GHz and τf=18.5ppm/°C could be obtained when the mass ratio of Bi2O3/MnO2(k) was 1, the doping content w=1wt% and sintered at 1050°C for 4h
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.336-338.316.pdf
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