Investigation of BaSO4-KPO3-Na2B4O7 Low-Melting Glass System as a Basis for Synthesis of a Glass-Solder Material

2021 ◽  
Vol 887 ◽  
pp. 60-64
Author(s):  
Alexey Stolbovsky ◽  
Vita Vyatchina
Keyword(s):  
Glass Formation ◽  
Linear Thermal Expansion Coefficient ◽  
Linear Thermal Expansion ◽  
Softening Temperature ◽  
Calcium Sulphate ◽  
Barium Sulphate ◽  
Glass Formation Region ◽  
Concentration Triangle ◽  
Formation Region ◽  
Concentration Dependences

The possibility of using the compositions of BaSO4-KPO3-Na2B4O7 system as a glass-solder (frit) material was shown. A glass formation region has been established in BaSO4-KPO3-Na2B4O7 system which is located in the borate-phosphate part of the concentration triangle and occupies ~41% of the triangle area. The concentration dependences of linear thermal expansion coefficient (TCLE), the softening temperature and the glass transition temperature was determined and discussed. It is established that the glass formation region, the concentration dependences of TCLE and technological temperatures values are significantly closer to those for CaSO4-KPO3-Na2B4O7 system than for MgSO4-KPO3-Na2B4O7 system. That may point out at the similar effect barium sulphate and calcium sulphate doping in the sulphate-phosphate-borate systems.

Investigation of CaSO4-KPO3-Na2B4O7 System as a Basis for Synthesis of Low-Melting Glasses Used as a Glass-Solder Material

2020 ◽  
Vol 989 ◽  
pp. 265-269 ◽  
Author(s):  
Alexey V. Stolbovsky ◽  
Svetlana Murzinova ◽  
Vita Vyatchina
Keyword(s):  
Thermal Expansion ◽  
Glass Transition ◽  
Transition Temperature ◽  
Linear Thermal Expansion Coefficient ◽  
Linear Thermal Expansion ◽  
Softening Temperature ◽  
Glass Formation Region ◽  
Formation Region ◽  
Solder Material ◽  
Concentration Dependences

The possibility of using the compositions of CaSO4-KPO3-Na2B4O7 system as a glass-solder material is shown. A glass formation region has been established in ternary system. The concentration dependences of linear thermal expansion coefficient, the softening temperature and the glass transition temperature are determined and discussed.

Glass formation region and order of formation of crystalline phases in the SrO-B2O3-SiO2 system

2010 ◽  
Vol 36 (3) ◽  
pp. 294-303 ◽  
Author(s):  
N. G. Tyurnina ◽  
O. L. Belousova ◽  
A. I. Domanskii ◽  
L. A. Doronina ◽  
V. L. Ugolkov
Keyword(s):  
Glass Formation ◽  
Glass Formation Region ◽  
Crystalline Phases ◽  
Formation Region ◽  
Sio2 System

ChemInform Abstract: The Ag2S-ZnS-GeS2 System: Phase Diagram, Glass-Formation Region and Crystal Structure of Ag2ZnGeS4.

ChemInform ◽  
2010 ◽  
Vol 41 (37) ◽  
pp. no-no
Author(s):  
O. V. Parasyuk ◽  
A. O. Fedorchuk ◽  
Yu. M. Kogut ◽  
L. V. Piskach ◽  
I. D. Olekseyuk
Keyword(s):  
Crystal Structure ◽  
Phase Diagram ◽  
Glass Formation ◽  
Glass Formation Region ◽  
Formation Region ◽  
System Phase Diagram ◽  
System Phase

Investigation of the glass-formation region of the system Sb2S3-SbI3-In.

1972 ◽  
Vol 15 (3) ◽  
pp. 410-412 ◽  
Author(s):  
I. D. Turyanitsa ◽  
B. M. Koperles ◽  
Yu. V. Popik
Keyword(s):  
Glass Formation ◽  
Glass Formation Region ◽  
Formation Region

The Ag2S–ZnS–GeS2 system: Phase diagram, glass-formation region and crystal structure of Ag2ZnGeS4

2010 ◽  
Vol 500 (1) ◽  
pp. 26-29 ◽  
Author(s):  
O.V. Parasyuk ◽  
A.O. Fedorchuk ◽  
Yu.M. Kogut ◽  
L.V. Piskach ◽  
I.D. Olekseyuk
Keyword(s):  
Crystal Structure ◽  
Phase Diagram ◽  
Glass Formation ◽  
Glass Formation Region ◽  
Formation Region ◽  
System Phase Diagram ◽  
System Phase

Tm3+/Yb3+ Codoped YAG Glass-Ceramic Formed in Silicate Glass System

2012 ◽  
Vol 455-456 ◽  
pp. 701-705
Author(s):  
Xiang Ling Zhang ◽  
Jie Zhang ◽  
Quan Shen ◽  
Hai Lin
Keyword(s):  
Glass Ceramic ◽  
Glass Formation ◽  
Heat Treating ◽  
Xrd Analysis ◽  
Sem Analysis ◽  
Glass System ◽  
Glass Formation Region ◽  
Formation Region ◽  
Internal Network ◽  
Crystal Grains

Based on the analysis of glass formation region of Y2O3-Al2O3-SiO2 glass system, the glass composition 5Li2O-18Y2O3-29Al2O3-48SiO2 (LYAS) in mol% central in the glass formation region of Y-Al-Si glass system was chosen for present work. The Tm3+ and Yb3+ were introduced as activators in LYAS glass. The glass samples were prepared by the high-temperature solid-state melting and then the derived YAG glass-ceramic was obtained by heat-treating the precursor glass. The X-ray diffraction (XRD) and scanning electron microscopy (SEM) analysis results indicate that the lattice constant of the obtained glass-ceramic is consistent with the pure YAG phase. The primary crystallite size is calculated to be 46nm and the crystal grains grow with excellent orientation (444) in the internal network. The secondary particle size is estimated to be ~8μm and the large grain size is owing to the particles aggregation. The crystal grains distributed uniformly in the glass matrix, and consistent well with the XRD analysis results.

scholarly journals The Glass Formation Region of the SnCl2-P2O5-SbCl3 System.

1996 ◽  
Vol 112 (5) ◽  
pp. 335-336
Author(s):  
Changzhi LI ◽  
Takeshi TAKAKI ◽  
Shigeo KOBAYASHI ◽  
Toshiaki TSURU ◽  
Kenji MORINAGA
Keyword(s):  
Glass Formation ◽  
Glass Formation Region ◽  
Formation Region

scholarly journals GLASS FORMATION IN TERNARY SYSTEM La2O3–As2S3–Pr6O11

2018 ◽  
Vol 61 (4-5) ◽  
pp. 43
Author(s):  
Ikhtiyarly B. Bakhtiyarly ◽  
Gulnar M. Fatullayeva ◽  
Orudg Sh. Kerimli
Keyword(s):  
Ternary System ◽  
Glass Formation ◽  
Inert Atmosphere ◽  
Glass Formation Region ◽  
Formation Region ◽  
Transparent Glass ◽  
X Ray ◽  
Coordination Numbers ◽  
Physical Chemical ◽  
Mineral Acids

Boundaries of glass formation in ternary system La2O3-As2S3-Pr6O11 were studied using methods of physical-chemical analysis (DTA, DTG, X-ray analysis, MSA). It was established that in glass formation region the range of concentration covers from As2S3-La2O3 15 mol%, but from As2S3-Pr6O11 it is 13 mol%. To our opinion the decrease in glass formation region of Pr6O11 comparing to La2O3 is related to crystalline structure of oxide, i.e. to the change in coordination number of lanthanides. Because properties of compounds of lanthanide are more sensitive to the change in coordination numbers relative to radii of ion. In the system the region of transparent glass formation is limited with the region of non-transparent one. The reason of non-transparency of a glass is the formation of primary centers of crystallization, which was confirmed by the results of X-ray analysis and SEM.  Raman spectra of transparent glass containing(La2O3)0.07(As2S3)0.90(Pr6O11)0.03 were studied. Intensity of bands which characterize the bonds of As–S, La–O, Pr–O in Raman spectrum and shift of energy of waves in the big party are related to the strengthening of bonds and probably, appearance of new bonds in glasses. When heating glasses of the composition (La2O3)0.07(As2S3)0.90(Pr6O11)0.03 in inert atmosphere (He) at 224,61 °С it softens which is followed by endoeffects. Observed exoeffect at 315,80 °С satisfies crystallization of glass, but at 380,80 °С thermal decomposition begins. Samples in the region of glass formation are stable at 300 K to air, water and organic solvents. When heated, glasses are dissolved in chromic mixture. They decompose in mineral acids and alkalies.Forcitation:Bakhtiyarly I.B., Fatullayeva G.M., Kerimli O.Sh. Glass formation in ternary system La2O3–As2S3–Pr6O11. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N 4-5. P. 43-48

Defining Borders of Vitrification Region in the Li2O⋅B2O3-B2O3-Yb2O3⋅B2O3 System

2015 ◽  
Vol 1765 ◽  
pp. 115-120 ◽  
Author(s):  
MirSalim M. Asadov ◽  
Asif N. Mammadov ◽  
Dilgam B. Tagiev ◽  
Naile A. Akhmedova
Keyword(s):  
Microstructural Analysis ◽  
Polythermal Section ◽  
Eutectic Point ◽  
Eutectic System ◽  
X Ray Diffraction ◽  
Glass Formation Region ◽  
Concentration Triangle ◽  
Formation Region ◽  
X Ray ◽  
Physico Chemical

ABSTRACTPhase relations along the Li2O⋅2B2O3-Yb2O3⋅B2O3 polythermal section of the Li2O –B2O3–Yb2O3 system were investigated by differential thermal analysis, x-ray diffraction, and microstructural analysis. The state phase diagram of the Li2O⋅2B2O3-Yb2O3⋅B2O3 section is an eutectic system with invariant eutectic point corresponding to ∼0.2 mole fraction of Yb2O3⋅B2O3 and 800 °C. According to physico-chemical analysis, the Li2O⋅2B2O3-Yb2O3⋅B2O3 polythermal section is quasi-binary, allowing us to partially triangulate the Li2O-B2O3-Yb2O3 system. The borders of the glass formation region were defined in the Li2O⋅2B2O3-B2O3-Yb2O3⋅B2O3 concentration triangle. The vitreous samples showed a semiconducting nature.

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