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Formation of SnO2 gels from dispersed sols in aqueous colloidal solutions
(1990-05-01)
Transparent SnO2 gels were obtained from SnCl4 aqueous solution. The sol formation from tin oxihydroxy peptization in different concentrations and by electrolyte addition in solution was measured. It was verified that the ...
Formation of SnO2 gels from dispersed sols in aqueous colloidal solutions
(1990-05-01)
Transparent SnO2 gels were obtained from SnCl4 aqueous solution. The sol formation from tin oxihydroxy peptization in different concentrations and by electrolyte addition in solution was measured. It was verified that the ...
Effect of cobalt(II) oxide and manganese(IV) oxide on sintering of tin(IV) oxide
(1996-03-01)
Additions of 0.5 to 2.0 mol% of CoO or MnO2 onto SnO, promote densification of this oxide up to 99% of theoretical density. The temperature of the maximum shrinkage rate (TM) and the relative density in the maximum ...
Effect of cobalt(II) oxide and manganese(IV) oxide on sintering of tin(IV) oxide
(1996-03-01)
Additions of 0.5 to 2.0 mol% of CoO or MnO2 onto SnO, promote densification of this oxide up to 99% of theoretical density. The temperature of the maximum shrinkage rate (TM) and the relative density in the maximum ...
Electrical properties of the SnO2-based varistor
(1998-12-01)
The non-linear electrical properties of CoO-doped and Nb205-doped SnO2 ceramics were characterized. X-ray diffraction and scanning electron microscopy indicated that the system is single phase. The electrical conduction ...
Study of SnO2 gels by Eu3+ fluorescence spectroscopy
(1992-12-01)
Eu3+ fluorescence spectroscopy was used as a probe to study the changes in local arrangements of tin oxyhydroxide precipitate → sol → gel → glass conversion. Electronic transition intensities and 5D0 excited state lifetime ...
Study of SnO2 gels by Eu3+ fluorescence spectroscopy
(1992-12-01)
Eu3+ fluorescence spectroscopy was used as a probe to study the changes in local arrangements of tin oxyhydroxide precipitate → sol → gel → glass conversion. Electronic transition intensities and 5D0 excited state lifetime ...
Morphological characterization of aqueous tin oxyhydroxide gel
(1994-05-01)
Light scattering, electron microscopy and X-ray diffraction are used to determine the morphology and size of particles in diluted aqueous gel of tin (IV) oxyhydroxide. Data show that the gel is composed of spherical 2-3 ...