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:
Cr2O3 nano-powders were successfully fabricated with using chromium nitrate andaqueous ammonia as starting material and urea as dispersant agent by sol-gel method. Theformation of crystalline phase during heat treatment of dry gel was characterized by differentialthermogravimetry (DTG) and X-ray diffraction (XRD) techniques and the temperature ofcalcination was determined as 400°C. Scanning electron microscopy (SEM) was utilized to observethe morphology of the as-fabricated Cr2O3 particles. The results showed that Cr2O3 particles arespherical or square with little agglomeration and a diameter of about 30 nm. The specific surfacearea of Cr2O3 particles was measured as 44.23 m2/g by Brunauer-Emmett-Teller (BET)
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.353-358.2111.pdf
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