ISSN:
1662-8985
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:
To adjust the morphology and crystallinity of the chemically prepared Zr-riched` leadzirconate titanate (Pb(Zr0.95Ti0.05)O3) powders, polyethylene glycol (PEG 20000) was used inaqueous solution (modified Pechini method). Thermal analysis of the as-synthesized gel showed twodistinct stages, which indicates the volatilization of water and the decomposition of polymers,respectively. When the gel were calcined at 400 oC, the powders consisted mainly of perovskite PZTaccompanied with small amounts of secondary phases. The higher the calcination temperatureapplied, the stronger the intensity of XRD, which means the crystallinity were improved. Scanningelectron microscopy of as-prepared powders suggested that the powders were soft agglomerateparticles when calcined at 600 to 800 oC. Compared with the normal Pechini method, PEG could helpthe formation of crystalline phase and soft agglomerate. When the powders compacts were sintered at975 to 1125 oC, high pure (〉99.5%) of tetragonal phase ceramics were got having relative density of85% to 94%
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.26-28.1105.pdf
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