Structural investigation of bismuth borate glasses and crystalline phases

Bajaj, Anu; Khanna, Atul; Chen, Banghao; Longstaffe, James G.; Zwanziger, U-Werner; Zwanziger, Joseph; Gómez, Yolanda; González, Fernando

doi:10.1016/j.jnoncrysol.2008.09.033

Cited by 110 publications

(79 citation statements)

References 47 publications

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“…110,317,318,326 Except the oldest study, 110 they agree on a practical stability optimum near 45% BiO 1?5 , in agreement with the break in the liquidus temperature (Fig. 2), versus falling T g (Fig.…”

Section: Sealing and Glass Stability During Reflowsupporting

confidence: 59%

“…255,394 In these Bi 2 O 3 rich compositions, in spite of extensive characterisation work with well controlled samples, there are significant discrepancies in the reported N 4 values, as illustrated in Fig. 7; the work of Terashima et al used by Dimitrov 327 seems somewhat at odds with that of Bajaj et al 318 (and previous work cited by the latter 247 ), although the same method (MAS-NMR) was used in both cases and sample fabrication appeared to be well controlled (moderate melting temperatures and noble metal crucibles). Residual impurities 318 could possibly account for some of the discrepancies, as well as thermal history (quenching rate and subsequent annealing), which significantly influences glass properties 376 and even structure (see discussion on 'polyamorphism' 280,318 , the coordination of Pb 2z is somewhat more ordered and much more dependent on x in binary borate glasses, according to XRD and MAS-NMR studies: 397 Coordination number is 6 up to about x525%, then decreases continuously, reaching 3 for x equal or greater than y55%, which is matched by a corresponding decrease of average bond length from y300 down to 233 pm.…”

Section: Bonding In Crystalline Compoundsmentioning

confidence: 91%

“…At intermediate cooling rates, the maximum Bi content is y60%, 118,244,318 with 66% achievable for splat quenching. 318 Going to twin roller quenching increases the vitrification range further, to 0-88%Bi. 110,248 The Bi 2 O 3 rich ends of the glass forming ranges with B 2 O 3 and SiO 2 are often reported to be quite different from each other, and also from the values for PbO.…”

Section: Binary Systemsmentioning

confidence: 98%

“…leached from crucibles, 118,318 so some of the examined compositions are most likely not strictly binary. Therefore, the borate systems are marked in Table 12 by a crucible specific suffix (where specified) after the quenching index.…”

Section: Origins Of Discrepancies In Indicated Datamentioning

confidence: 99%

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Review of Bi₂O₃ based glasses for electronics and related applications

Maeder

2013

International Materials Reviews

154

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The present work critically reviews the scientific and patent literature on low melting bismuth based oxide glass frits in materials for electronics, sensors and related applications such as sealing glasses, solar cells, architectural and automotive glass, the main motivation being to replace lead based materials by environmentally more benign ones. Due to similar glass forming properties of Bi and Pb, Bi based glasses are the closest 'drop-in' alternative for lead bearing formulations, and are therefore actually replacing them in many applications, helped also by previous experience with Bi containing materials in thick film technology and component metallisations. The outstanding issues are discussed, e.g. matching the lowest processing temperatures achieved by the classical lead based glasses without sacrificing durability and stability, as well as stability versus chemical reduction. Finally, consideration is also given to special 'heavy' glasses (often containing Bi and Pb together) that are useful in fields such as optics, superconductors and nuclear technology, as well as to specific Bi 2 O 3 containing crystalline compounds.Keywords: Glasses, Bismuth, Bi 2 O 3 , Electronics, Optics, Thick film technology, Sensors Introduction Low melting glasses in electronics and other applicationsAs for ceramics, inorganic glasses, glass-ceramic and glaze materials have long gone beyond their traditional uses to address a wide array of modern technological challenges, Owing to performance and cost criteria, most standard glasses have relatively high softening points. However, there are many technological applications where a low softening temperature is required, in order to lower energy expenditure, avoid damaging devices in contact with the glass during processing or ensure compatibility with other materials:(i) hermetic sealing of packages, lamps, electrical feedthroughs and semiconductor devices 13,14,16,17,19,44,45 (ii) hermetic sealing and mechanical attachment of sensors 23,27 ( Fig. 1) (iii) encapsulation of semiconductor devices 29,30 (iv) overglazing of automotive, packaging and architectural glass 33,34,[46][47][48] (v) photovoltaic (PV) solar cell technology -conductors and contacts 42,43,[49][50][51][52][53] (vi) enamelling of aluminium in architecture and home appliances 35,[54][55][56][57][58] (vii) thick film (TF) electronics and other devices 21,22,24,25,27,59 (Fig. 1, the section on 'PbO in low melting frits and TF technology'); especially, special low firing compositions for fabrication of circuits and sensors on glass or metals. 1,28,[66][67][68][69][70][71][72] For these applications, glasses are often formulated as frits (e.g. finely divided powder), which may be applied, dispersed in a suitable medium, onto a substrate by various methods such as slip casting, screen printing, roller/curtain coating, spraying, dispensing and electrophoresis, or as preforms for sealing. Classically, the aforementioned applications have to a great extent used lead based glasses, which have a rather unique combinat...

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Section: Sealing and Glass Stability During Reflowsupporting

confidence: 59%

Section: Bonding In Crystalline Compoundsmentioning

confidence: 91%

Section: Binary Systemsmentioning

confidence: 98%

Section: Origins Of Discrepancies In Indicated Datamentioning

confidence: 99%

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Review of Bi₂O₃ based glasses for electronics and related applications

Maeder

2013

International Materials Reviews

154

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“…The properties make the Bi2O3/ZrO2 a strong candidate for various applications like oxygen gas sensors, solid oxide fuel cells, microelectronic and glass manufacturing [1][2][3][4][5]. At ambient pressure, ZrO2 has three polymorphs, cubic (c-ZrO2), tetragonal (t-ZrO2) and monoclinic (m-ZrO2).…”

Section: Introductionmentioning

confidence: 99%

A Study of the Electronic Structure and Elastic Properties for m-ZrO2 and -Bi2O3 Based on First-Principles Calculations under Ambient Pressure

Wang¹,

Li²,

Wang³

2017

Proceedings of the 7th International Conference on Education, Management, Information and Mechanical Engineering (EMIM 2017)

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Abstract. An investigation on the energy band structures, density of states, elastic coefficients and Debye temperature of monoclinic ZrO2 and monoclinic Bi2O3 at ambient pressure was investigated via first-principles calculations based on density functional theory (DFT). The calculation results from the energy band structures and density of states show that both of m-ZrO2 and a-Bi2O3 are separately indirect and direct band gap semiconductors materials. The band gap for m-ZrO2 and a-Bi2O3 are 3.67 eV and 2.05 eV respectively. The calculated results of elastic coefficients indicate that the monoclinic structures of ZrO2 and Bi2O3 are mechanically stable at ambient pressure. Moreover, the Debye temperature of m-ZrO2 and a-Bi2O3 are 385 and 392K.

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Effect of liquid state on the crystallization of Zr₆₅Al_7.5Ni₁₀Cu_17.5 metallic glass

Wang

Xiao

et al. 2012

Cryst. Res. Technol.

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The correlation between the quenching temperature and the crystallization of the Zr65Al7.5Ni10Cu17.5 metallic glass was examined. The electrical resistivity and the thermal property were measured to monitor the structural change of the samples quenched at the temperature of 1473 K, 1573 K, 1673 K and 1773 K, respectively. The consistent results of DSC and d(ρ(T)/ρ0)/dT‐T curves indicated different crystallization behaviors of the samples. For the samples quenched from 1773 K, the increase in ΔTx, Trg and γ imply higher glass forming ability. Moreover, according to the XRD patterns of samples annealed at different temperatures, the melt temperature influences the formation of crystallized phases of amorphous Zr65Al7.5Ni10Cu17.5 alloy.

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Structural investigation of bismuth borate glasses and crystalline phases

Cited by 110 publications

References 47 publications

Review of Bi₂O₃ based glasses for electronics and related applications

Review of Bi₂O₃ based glasses for electronics and related applications

A Study of the Electronic Structure and Elastic Properties for m-ZrO2 and -Bi2O3 Based on First-Principles Calculations under Ambient Pressure

Effect of liquid state on the crystallization of Zr₆₅Al_7.5Ni₁₀Cu_17.5 metallic glass

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Structural investigation of bismuth borate glasses and crystalline phases

Cited by 110 publications

References 47 publications

Review of Bi2O3 based glasses for electronics and related applications

Review of Bi2O3 based glasses for electronics and related applications

A Study of the Electronic Structure and Elastic Properties for m-ZrO2 and -Bi2O3 Based on First-Principles Calculations under Ambient Pressure

Effect of liquid state on the crystallization of Zr65Al7.5Ni10Cu17.5 metallic glass

Contact Info

Product

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Review of Bi₂O₃ based glasses for electronics and related applications

Review of Bi₂O₃ based glasses for electronics and related applications

Effect of liquid state on the crystallization of Zr₆₅Al_7.5Ni₁₀Cu_17.5 metallic glass