Surface area, crystal morphology and characterization of transition alumina powders from a new gibbsite precursor

A new procedure was used to prepare a microcrystalline powder constituted by thin euhedral hexagonal gibbsite plates, 0.2 to 0.6 µm in diameter and 32 nm thick. The powder, fired between 200 and 1000 °C, produced chi and kappa transition aluminas. Alpha-alumina is formed from 1000 °C and recrystalli...

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Hlavní autoři:	Antonio Carlos Vieira Coelho, Helena de Souza Santos, Pedro Kuniiko Kiyohara, Kelly Nanci Pinto Marcos, Pérsio de Souza Santos
Médium:	Artigo
Jazyk:	Inglês
Vydáno:	Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) 2007-06-01
Edice:	Materials Research
Témata:	gibbsite transition aluminas active aluminas alpha-alumina
On-line přístup:	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392007000200015
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