ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract The surface properties and microstructure of ultrafine oxide powders prepared by vapour phase condensation have been examined by several techniques (electron microscopy, X-ray diffraction, nitrogen adsorption isotherms, infra-red absorption of surface species). All the powders had a very small particle size (〈20 nm), and gave type II adsorption Isotherms — typical of non-porous adsorbents. From infra-red absorption studies of water adsorbed on the surface of the oxides, an unusually relaxed and unreactive surface was indicated. The compaction and sintering characteristics of the powders were exceptional, and made them highly suited for ceramic fabrication. The contrasting behaviour of an ultrafine magnesia, consisting of porous pseudomorphic agglomerates, is demonstrated.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00540767
