Please use this identifier to cite or link to this item:
|Type:||Artigo de periódico|
|Title:||Particles Of Aluminum Metaphosphate Containing Closed Pores. Preparation, Characterization And Optical Properties|
|Author:||de Oliveira Lima E.C.|
|Abstract:||Admixture of aluminum nitrate, sodium metaphosphate and ammonium hydroxide aqueous solutions yields noncrystalline solid precipitates. Using various aluminum: phosphorus ratios in the reacting mixtures, a range of particulate solids is obtained, the thermal behavior of which depends largely on the Al: P molar ratio in each solid. Upon heating to 600-700°C for times ranging from 30 s to 10 min, closed pores are formed within the particles of the solids in which the Al: P ratio is less than unity. The particles which are thus obtained are powerful light backscatterers. Closed-pore formation and growth can be monitored in real time by heating the particles under the condensed beam of a transmission electron microscope. © 1993.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.