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:
Sodium-potassium Niobate (K0.4Na0.6NbO3, KNN) nanopowders were prepared by hydrothermalsynthesis at the temperature range of 140-180°C for 12-48h using Nb2O5, NaOH and KOH assource materials. By means of XRD and SEM techniques, the effects of composition and hydrothermaltreatment process, such as the rate of [R]/[Nb], the concentration of the alkali, the hydrothermal treatmenttemperature and the hydrothermal treatment time, on the microstructures and the crystallinity of alkalimetals niobate were investigated in details. Results show that K0.4Na0.6NbO3 powders could be achievedby hydrothermal synthesis at the temperature range of 140-180°C with the alkalinity concentration of2-8M. With the increase of hydrothermal reaction temperature and time, the crystallinity of KNNparticles was improved. The obtained K0.4Na0.6NbO3 polycrystalline particles have rhombic structure
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.368-372.579.pdf
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