Formation and structure of glasses containing SeO2

Dimitriev, Y.; Yordanov, Stancho; Lakov, L.

doi:10.1016/0022-3093(95)00348-7

Cited by 21 publications

(4 citation statements)

References 15 publications

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“…Such solidification is indicative of the glass-formation tendency of (SeO 3 2− )-chains which manifests itself in the selenite glasses. 17,18 To summarize, a hypothetical ternary system Ag-Ag 2 Se-Ag 2 SeO 3 was constructed in order to assist in the explanation of (i) the mechanism of in-situ oxidation, (ii) the sequence of phase equilibria and (iii) various morphologies which appear in the in-situ oxidized Ag 2 Se particles. It also reasonably includes the DSC results of the oxidized alloy sample.…”

Section: Vertical Section Through the Ag-ag 2 Se-ag 2 Seo 3 Ternary Smentioning

confidence: 99%

Internal Oxidation of a Ag-l.3 at.% Se Alloy. Part I: Composition and Appearance of Oxidation Products

Roth

Kosec

Skraba

et al. 2004

Oxidation of Metals

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The internal oxidation of a two-phase at.% Se alloy in pure oxygen was studied at 750, 800 and 830 • C. The alloy is composed of a dilute solid solution of selenium in silver) and Ag 2 Se intermetallic particles. The internal oxidation of this alloy proceeds through gradual in-situ oxidation of the Ag 2 Se particles as well as through diffusive internal oxidation of selenium from solid solution. Gradual in-situ internal oxidation of Ag 2 Se particles reflects itself in the appearance of two internal-oxidation fronts, inner and outer, marking the beginning and end of the in-situ oxidation of Ag 2 Se particles. The oxide phase formed during in-situ oxidation is the molten double oxide, Ag 2 SeO 3 . A theoretical treatment of the phase relationships in a hypothetical Ag-Ag 2 Se-Ag 2 SeO 3 ternary phase diagram is presented to assist the explanation of the mechanism of in-situ oxidation. The kinetics of oxidation are presented in Part II.KEY WORDS: silver-selenium alloy; Ag 2 Se in-situ oxidation; Ag 2 SeO 3 ; internal oxidation of two-phase alloys.

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Section: Vertical Section Through the Ag-ag 2 Se-ag 2 Seo 3 Ternary Smentioning

confidence: 99%

Internal Oxidation of a Ag-l.3 at.% Se Alloy. Part I: Composition and Appearance of Oxidation Products

Roth

Kosec

Skraba

et al. 2004

Oxidation of Metals

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“…However, the study on conditional or non-traditional mixed glass former system is not extensive. 12 Recently, the study of few selenoborate glasses 13 shows that with increasing SeO 2 content the formation of Se-O cluster takes place in the glass network. These clusters in turn modify the boron-oxygen network and create more non-bridging oxygen.…”

Section: Introductionmentioning

confidence: 99%

Transport properties of silver selenomolybdate glassy ionic conductors

Deb

Ghosh

2012

Journal of Applied Physics

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Transport properties of silver selenomolybdate glassy ionic conductors have been reported for wide composition and temperature ranges. It has been observed that the transport properties of these glasses depend strongly on the modifier content as well as on the glass formers ratio. A direct correlation between the ion transport and the modification of the glass structure has been predicted. Transport properties of these glasses are also strongly influenced by the existence of dual character of SeO 2 as a glass former and a glass modifier. Structural models for different compositions have also been proposed. V

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“…The glass formation in different two, three and multicomponent systems containing SeO 2 and other nontraditional glass formers (TeO 2 , V 2 O 5 and MoO 3 ) as well as network modifiers (Ag + , Cu 2+ , Zn 2+ , etc.) have been investigated (Table 1) [8][9][10][11][12][13][14][15][16][17][18][19]. Up to now models of structure transformation have been developed in selenite systems with participation of non-traditional network formers (TeO 2 , MoO 3 and V 2 O 5 ) [8][9][10][11] as well glasses containing alkaline modifiers [20].…”

Section: Introductionmentioning

confidence: 99%

Structural Models of Selenite Glasses Containing Ag<sup>+</sup> and Cu<sup>2+</sup> Ions

Bachvarova-Nedelcheva

Iordanova

Dimitriev

2008

AMR

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Selenite glasses are a new class of amorphous materials which are interesting mainly from a scientific point of view and they are not yet fully examined. Selenite glasses containing other non-traditional glass formers (TeO2, V2O5 and MoO3) as well as network modifiers (Ag+, Cu2+, Zn2+, etc.) were obtained. The aim of the present study is to explain the glass formation ability in selenite systems with the participation of modifiers (Ag+ and Cu2+) and MoO3.

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Formation and structure of glasses containing SeO2

Cited by 21 publications

References 15 publications

Internal Oxidation of a Ag-l.3 at.% Se Alloy. Part I: Composition and Appearance of Oxidation Products

Internal Oxidation of a Ag-l.3 at.% Se Alloy. Part I: Composition and Appearance of Oxidation Products

Transport properties of silver selenomolybdate glassy ionic conductors

Structural Models of Selenite Glasses Containing Ag<sup>+</sup> and Cu<sup>2+</sup> Ions

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