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The Preparation and Properties of Anisotropic Glass and Glass Ceramics

dc.contributor.authorMelling, Peter James
dc.date.accessioned2008-08-20T01:22:19Z
dc.date.accessioned2022-11-01T22:06:42Z
dc.date.available2008-08-20T01:22:19Z
dc.date.available2022-11-01T22:06:42Z
dc.date.copyright1978
dc.date.issued1978
dc.description.abstractThe electrical properties of 3.48 PbO - 2SiO2 glass have been studied in detail using a Cole-Berbarian AC conductivity bridge. From the results of DC electrolysis experiments and AC conductivity measurements it is concluded that the charge carrier in the glass is the Pb++ ion. Optical activity has been observed in the electrolysed glass. Anisotropic electrical conductivity and resistance to chemical attack resulting from electrolysis are also observed. A study of the electric properties and devitrification behaviour of 0.97 PbO - 3.7 Na2O - 5 SiO2 glass doped with iron is described. The glass ceramic formed by devitrification of the iron doped glass is strongly magnetic and possesses a susceptibility inversely proportional to the applied magnetic field. The devitrified glass consists of sodium-metasilicate crystals bound together with a lead-silicate glassy phase. The conditions for producing an anisotropic glass-ceramic from the sodium-lead-silicate glass, with a microstructure similar to that of an aligned directionally solidified ceramic eutectic, are reported. The use of different incident radiations to increase the information available from a radial distribution function is also described.en_NZ
dc.identifier.urihttps://ir.wgtn.ac.nz/handle/123456789/28044
dc.languageen_NZ
dc.language.isoen_NZ
dc.publisherTe Herenga Waka—Victoria University of Wellingtonen_NZ
dc.subjectAnisotropy
dc.subjectGlass analysis
dc.subjectElectric properties
dc.titleThe Preparation and Properties of Anisotropic Glass and Glass Ceramicsen_NZ
dc.typeTexten_NZ
thesis.degree.disciplineChemistryen_NZ
thesis.degree.grantorTe Herenga Waka—Victoria University of Wellingtonen_NZ
thesis.degree.levelDoctoralen_NZ
thesis.degree.nameDoctor of Philosophyen_NZ
vuwschema.type.vuwAwarded Doctoral Thesisen_NZ

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