Effect of liquid glass composition and structure on the strength of low-hydrogen electrode coatings

The possibilities of obtaining porous fillers based on carbonate sludge and liquid-glass composition are considered. One of the issues of industrial waste disposal is the creation of waste-free technologies. The use of nanotechnology-based carbonate sludge in the production of porous aggregates increases environmental safety. A porous aggregate with high physical and mechanical properties was obtained. The use of carbonate sludge in the production of porous aggregate contributes to: a) recycling of industrial waste; b) environmental protection; C) expanding the raw material base for obtaining ceramic materials for construction. A patent of the Russian Federation was obtained for the obtained method of producing a porous aggregate using a liquid-glass composition.

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INVESTIGATION OF THE INFLUENCE OF MICROWAVE RADIATION ON THE PROPERTIES OF GRANULAR HEAT INSULATION MATERIALS BASED ON LIQUID GLASS

Collected scientific works of Ukrainian State University of Railway Transport ◽

10.18664/1994-7852.196.2021.241543 ◽

2021 ◽

pp. 6-16

Author(s):

Tatyana Rymar

Keyword(s):

Microwave Radiation ◽

Liquid Glass ◽

Structural Changes ◽

Glass Composition ◽

Thermal Action ◽

Convective Heating ◽

Energy Costs ◽

Chemical Methods ◽

Volumetric Heating ◽

Insulation Materials

The main methods of improving the performance of granular thermal insulationmaterials based on liquid glass are chemical methods of their modification, which are based onchanging their structure through the use of special ingredients. At the same time, there is a need to introduce often a large number of components and individual technological operations, which is notalways technological. One of the promising methods of changing the physical state of substancesunder the action of an electromagnetic field is non-thermal treatment of microwave radiation. Theadvantages of using microwave radiation in comparison with the generally accepted methods ofmodification of materials are the transformation of their structure without significant changes in thetechnological process and the need to use additional components. Due to volumetric heating and themechanism of non-thermal action of microwave radiation on processing objects the duration of theirheating considerably decreases. When microwave heating of a liquid glass composition part of theenergy of electromagnetic radiation is converted into heat, which contributes to the intense swellingof the material, and the other part is aimed at structural changes in the material, which improve itsproperties due to the non-thermal effect of microwave radiation. Studies show that the best set ofperformance properties have granular materials obtained under the action of microwave radiationat a power of 650 W, which corresponds to a temperature of 110-120 0C. The required duration ofsuch heat treatment is 6-7 minutes. The closest to them in terms of coefficient of swelling are materialsobtained by convective heating at a temperature of 200 0C for 1 hour, but their physical andmechanical properties are much lower. Thus, it can be noted that the use of microwave radiationallows to obtain granular thermal insulation materials with a better set of performance properties atlower energy costs for their production.

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Interactions of Silicate Glasses with Aqueous Environments Under Conditions of Prolonged Contact and Flow

MRS Proceedings ◽

10.1557/proc-125-129 ◽

1988 ◽

Vol 125 ◽

Author(s):

A A. Barkatt ◽

E. E. Saad ◽

R. B. Adiga ◽

W. Sousanpour ◽

A L. Barkatt ◽

...

Keyword(s):

Glass Composition ◽

Aqueous Media ◽

Corrosion Process ◽

Silicate Glasses ◽

Dissolution Behavior ◽

Composition Control ◽

Composition And Structure ◽

Type Composition ◽

Prolonged Contact ◽

Aqueous Environments

ABSTRACTStudies of the corrosion process of silicate and boro-silicate glasses under a broad range of contact times, surface-to-volume ratios and leachant compositions indicate that dissolution of such glasses in aqueous media can be interpreted in terms of activity of dissolving amorphous silica. This activity is modified by the presence of elements such as Al, Mg and Fe. The effects of these elements, when initially present in the glass or in the leachant, and, in general, the effects of glass composition on the course of the corrosion process can be viewed in terms of the formation of a surface layer on the leached glass. The type, composition and structure of this layer, which are determined by glass composition, control the dissolution behavior of the glass.

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The effect of glass composition and structure on photochromic properties of LiF–Al2O3–B2O3 glassy materials

Theoretical Foundations of Chemical Engineering ◽

10.1134/s0040579517050165 ◽

2017 ◽

Vol 51 (5) ◽

pp. 781-785

Author(s):

A. B. Matevosyan ◽

L. A. Gasparyan ◽

N. B. Knyazyan

Keyword(s):

Glass Composition ◽

Photochromic Properties ◽

Composition And Structure ◽

Glassy Materials

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Effect of Liquid Glass Composition on the Catalytic Preparation of Pyrano[2,3-d]pyrimidine Derivatives

Organic Preparations and Procedures International ◽

10.1080/00304948.2019.1600124 ◽

2019 ◽

Vol 51 (3) ◽

pp. 255-269

Author(s):

Mehdi Abaszadeh ◽

Seyyed Jalal Roudbaraki ◽

Majid Ghashang

Keyword(s):

Liquid Glass ◽

Glass Composition ◽

Pyrimidine Derivatives

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In Situ Preparation and Corrosion Resistance of a ZrO2 Film on a ZrB2 Ceramic

Coatings ◽

10.3390/coatings9070455 ◽

2019 ◽

Vol 9 (7) ◽

pp. 455 ◽

Cited By ~ 1

Author(s):

Haitao Yang ◽

Jian Zhang ◽

Junguo Li ◽

Qiang Shen ◽

Lianmeng Zhang

Keyword(s):

Corrosion Resistance ◽

Photoelectron Spectroscopy ◽

Electrochemical Impedance ◽

Alkaline Solutions ◽

Hydrogen Electrode ◽

In Situ Preparation ◽

Composition And Structure ◽

Naoh Solution ◽

Order Of Magnitude

ZrO2 films were in situ prepared using the anodic passivation of a ZrB2 ceramic in alkaline solutions. The composition and structure of the films were characterized using field-emission scanning electron microscopy (FE-SEM), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). The corrosion resistances were evaluated in 0.1 M oxalate solution using the potentiodynamic polarization method (PDP) and the electrochemical impedance spectroscopy (EIS) technique. The results show that ZrO2 films can be prepared using anodization from −0.8 to 0.8 V standard hydrogen electrode (SHE) in 2–16 M NaOH solutions. During the anodization, the dehydration reaction of Zr(OH)4 to ZrO2 caused the volume shrinkage and tensile stress of the films. When the thickness of the films exceeded a critical value, the mud-cracking morphology occurred. The films without cracks exhibited the inhibition effect and provided effective corrosion protection in a 0.1 M H2C2O4 solution, which had a positive correlation with the film thickness. The film obtained when put in an 8 M NaOH solution (near the critical thickness) was found to significantly improve its corrosion resistance when put in a 0.1 M H2C2O4 solution by almost one order of magnitude compared with the bare ceramic.

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Electron Irradiation Damage in Multi-Component Glasses

Microscopy and Microanalysis ◽

10.1017/s1431927600034449 ◽

2000 ◽

Vol 6 (S2) ◽

pp. 390-391

Author(s):

N. Jiang ◽

J. Silcox

Keyword(s):

Electron Irradiation ◽

Glass Composition ◽

Oxide Glass ◽

Irradiation Damage ◽

Phase Decomposition ◽

Irradiation Effects ◽

Modified Model ◽

X Ray ◽

Composition And Structure ◽

Damage Process

Understanding electron beam induced damage in glasses, especially in multi-component glasses, is very important, since the interaction of electron probes with glass is a very common approach to determine glass composition and structure. For example, the decay of characteristic X-ray and Auger electron intensities, using electron beams as probes, of alkalis in glasses have been known for years. In addition, both phase separation and formation of gas bubbles in the glasses have also been reported. Many irradiation effects are strongly dependent on the structure, bonding and composition of matter. In general, three types of mechanisms, knock-on damage, ionization and field-induced migration have been introduced to describe the damage induced by electron irradiation. Here, we demonstrate electron irradiation induced phase decomposition in a multi-component oxide glass, and introduce a modified model to interpret the damage process.

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