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Please use this identifier to cite or link to this item: http://hdl.handle.net/2080/339

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contributor.authorSarkar, D-
contributor.authorMohapatra, Deepak-
contributor.authorRay, S-
contributor.authorBhattacharyya, S-
contributor.authorAdak, S-
contributor.authorMitra, N-
date.accessioned2006-09-21T04:42:12Z-
date.available2006-09-21T04:42:12Z-
date.issued2006-
identifier.citationCeramics International (Accepted)en
identifier.urihttp://hdl.handle.net/2080/339-
descriptionCopyright for this article belongs to Elsevier doi:10.1016/j.ceramint.2006.05.002en
description.abstractAl2O3–ZrO2 composite gel precursor powder containing 5–15 mol% ZrO2 was prepared by wet chemical route. The washed gel containing pseudoboehmite and amorphous zirconia was characterized with respect to DTA/TG, XRD and IR spectroscopy. The DTA/TG result indicates three-stage decomposition for pseudoboehmite and single stage decomposition for amorphous zirconia. In the calcined powder phase evolution of Al2O3 follows the sequence pseudoboehmite → bayerite → boehmite → γ-Al2O3 → θ-Al2O3 → α-Al2O3, while that of ZrO2 follows amorphous ZrO2 → t-ZrO2 → (t + m)ZrO2. FTIR studies revealed that the number of M–OH and M–O bond increase on increasing mol% of ZrO2 due to a change in the cationic charge of the composite powder. TEM photograph of calcined powder showed both dispersed nano-size spherical particle as well as agglomerated particles. EPMA confirmed the near uniform distribution of zirconia particles in the alumina matrix.en
format.extent746213 bytes-
format.mimetypeapplication/pdf-
language.isoen-
publisherElsevieren
subjectAlumina–zirconiaen
subjectHydrogelen
subjectCrystallizationen
subjectFTIRen
subjectTEMen
titleSynthesis and characterization of sol–gel derived ZrO2 doped Al2O3 nanopowderen
typeArticleen
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