molten glass corrosion resistance of immersed combustion
Refractory Degradation in Glass tank Melters. A Survey of
corrosion resistance to wool fiber glass as compared to pure AZS. Corrosion resistance data was obtained using the ASTM C-621 finger test with a 1 cm 2 x 5 cm long specimen at 1450 C and a test duration of 4 d. The glass composition contained typically 19 Na 2 O and 7 B 2 O 3. These refractories are intended for sidewalls pavers
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CiteSeerX — Refractory Degradation in Glass tank Melters
Refractories for glass furnaces normally are limited to compositions based on A12O3 ZrO2 and SiO2 with or without Cr2O3. Alumina-zirconia-silicate (AZS) refractories in contact with molten glass form a viscous silicate layer adjacent to the refractory thus restricting contact and therefore increasing corrosion resistance.
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Molten Glass Corrosion Resistance of Immersed Combustion
The corrosion resistance of molybdenum molybdenum disilicide and a SiC(p)/Al2O3 composite to molten E-glass at 1550degC was studied. Mo showed no tendency to oxidize as it was immersed
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Refractory degradation in glass tank melters. A survey of
Refractory Degradation in Glass tank Melters. A Survey of Testing Methods. M. Velez J. Smith R. E. Moore. University of Missouri-Rolla The degradation of refractories used in the construction of glass melting furnaces whether caused by the action of molten glass vaporized melt constituents products of fuel combustion or by batch dusts
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Glass > ASTM C965
1.1 This practice covers the determination of the viscosity of glass above the softening point through the use of a platinum alloy spindle immersed in a crucible of molten glass. Spindle torque developed by differential angular velocity between crucible and spindle is measured and used to calculate viscosity.
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(PDF) Corrosion of metals and alloys in molten glasses
Moreover the contact with both hot air and molten glass implies that the alloy has to be resistant to air oxidation and glass corrosion. This work focuses on corrosion of metals by molten glass. A basic test for cor- rosion estimation would be to submerse alloys in molten glass for a while and then observe it.
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REFEL Laboratory REFEL
Corrosion resistance The resistance to thermal and chemical stresses is tested with the dynamic finger test and the static plate corrosion test according to the International Commission on Glass Technical Committee 11 (the so-called TC11). In the dynamic finger test a cylindrical sample is rotated in a platinum crucible together with molten
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USAApparatus for measuring the resistivity of
USA US445184A USA USA US A US A US A US 445184 A US445184 A US 445184A US A US A US A US A US A US A Authority US United States Prior art keywords resistivity molten glass pair glass electrode Prior art date Legal status (The legal status is an assumption and is not a
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Effect of alloyed Al on the corrosion behaviour of Ni-base
Nov 01 2016 · The molten glass corrosion is similar to that caused by the molten salt where metallic elements are easily oxidized by the dissolved oxygen or other oxidizing agents in glass for example Fe 3 . Meanwhile the reaction products are normally non-protective due to the high solubility in melts and a flowing of molten glass.
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Thermal Sprayed Coatings Used Against Corrosion and
Corrosion and wear problems are still of great relevance in a wide range of combustion or electrical energy for plasma- and arc-based processes) into a stream of hot gases. The coating material is heated eventually melted and accelerated by this high- molten salt and molten glass.Coatings used against high -temperature oxidation.
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CiteSeerX — Refractory Degradation in Glass tank Melters
Refractories for glass furnaces normally are limited to compositions based on A12O3 ZrO2 and SiO2 with or without Cr2O3. Alumina-zirconia-silicate (AZS) refractories in contact with molten glass form a viscous silicate layer adjacent to the refractory thus restricting contact and therefore increasing corrosion resistance.
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Molten glass corrosion resistance of MoxRuySiz compounds
Jun 01 2006 · Molten glass corrosion resistance of immersed combustion-heating tube materials in E-glass. J. Am. Ceram. Soc. 78 (7) (1995) pp. . CrossRef View Record in Scopus Google Scholar. S.K. Sundaram R.F. Speyer. Electrochemical corrosion and protection of molybdenum and molybdenum disilicide in a molten soda-lime-silicate glass environment.
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The application and trend of refractories for glass kiln -2
The application and trend of refractories for glass kiln -2. Olivine magnesia olivine combined with particularly strong anti erosion performance by improving the Magnesia Brick combination of forsterite content phase can improve the corrosion resistance of Magnesia Brick. Therefore adding 20 in Magnesia Brick ingredients of forsterite powder
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Hot corrosion of glass coating on nickel base superalloy
Jul 01 2008 · Hot corrosion behaviour of BaO–MgO–SiO 2 based glass coating on nickel base superalloy was studied using 80 wt. Na 2 SO 4 20 wt. NaCl salt mixture which melts at about 700 °C. In one set of experiments the glass coated superalloy substrates were immersed in the molten salt wherein in the other samples were suspended in the salt vapour at 1000 °C.
Get PriceMolten Glass Corrosion Resistance of Immersed Combustion
The corrosion resistance of molybdenum molybdenum disilicide and a SiC (p) /Al 2 O 3 composite to molten soda‐lime‐silicate glass was studied. The ASTM‐C621–84 corrosion test method was modified because of inherent inaccuracies in the method and Si attack of platinum crucibles.
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Robert F. Speyer s research works Georgia Tech Research
The corrosion resistance of molybdenum molybdenum disilicide and a SiC(p)/Al2O3 composite to molten E-glass at 1550degC was studied. Mo showed no tendency to oxidize as it was immersed
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USE OF SILLIMANITE IN REFRACTORIES
(spalling resistance) abrasion and slag corrosion. Due to their exceptionally high resistance to spalling and corrosive actions of molten glass chemical attacks of soda borax and other frits they are most suitable for Glass Melting Furnace (GMT) Oil fired
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(PDF) Corrosion of metals and alloys in molten glasses
Moreover the contact with both hot air and molten glass implies that the alloy has to be resistant to air oxidation and glass corrosion. This work focuses on corrosion of metals by molten glass. A basic test for cor- rosion estimation would be to submerse alloys in molten glass for a while and then observe it.
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Author(s) J.J. Petrovic R.G. Castro R.U. Vaidya M.I
MOLTEN GLASS CORROSION RESISTANCE OF MoSi2 The molten glass corrosion-resistance of MoSi2 has been characterized in an alkali borosilicate glass (1). The corrosion behavior of MoSi2 in comparison to the refractory ceramic AZCS is shown in Figure 1 for locations above below and at the glass
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High temperature corrosion of (Er0.25Tm0.25Yb0.25Lu0.25
Oct 01 2020 · Multicomponent β-(Er 0.25 Tm 0.25 Yb 0.25 Lu 0.25) 2 Si 2 O 7 disilicate is reported as a good environmental barrier coating material.. β-(Er 0.25 Tm 0.25 Yb 0.25 Lu 0.25) 2 Si 2 O 7 demonstrates good resistances to water vapor and molten CMAS corrosion at high temperatures.. Our material shows improved resistance to CMAS corrosion at 1500 °C compared with its RE 2 Si 2 O 7
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Addition of ceramics materials to improve the corrosion
Jun 25 2019 · The corrosion resistance of high-purity alumina ceramics immersed in acid solutions (H 2 SO 4 HCl HNO 3) and alkaline solutions (NaOH KOH Na 2 O Ca(OH) 2) is determined by the degree of solubility of impurities contained within the grain limits (MgO CaO SiO FeO and Na 2 O). Due to the corrosion mechanism produced is a type of
Get PriceRefractory degradation in glass tank melters. A survey of
Refractory Degradation in Glass tank Melters. A Survey of Testing Methods. M. Velez J. Smith R. E. Moore. University of Missouri-Rolla The degradation of refractories used in the construction of glass melting furnaces whether caused by the action of molten glass vaporized melt constituents products of fuel combustion or by batch dusts
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SYNTHESIS AND DESIGN OF SILICIDE INTERMETALLIC
The kinetics of corrosion of plasma sprayed and extruded MoSb materials were investigated in molten alkali borosilicate glass under static and dynamic conditions at "C for 0.5-1510 hours. The corrosion behavior was compared to zirconia alumina yttria mullite yttria-alumina
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Corrosion of materials by molten glass / edited by George
A corrosion model for metals in molten glass / Henry D. Schreiber and Ernesto V. Sampson Jr. --The bubbling potential of molybdenum and tungsten and their alloys in soda-lime-silica glasses / A. Mishra G.A. Pecoraro and T.A. Cleary --Interaction of molybdenum with molten glass / H.-P. Martinz et al. --Corrosion and electrochemical protection of molybdenum in molten silicate glasses / S
Get PriceCorrosion of High Temperature Alloys by Molten Glass
Effects of Fuel Composition and Combustion Parameters on Furnace Wall Fireside Corrosion in Pulverised Coal-Fired Boilers p.857. Corrosion of High Temperature Alloys by Molten Glass p.865. Corrosion Resistance of Alloys in IGCC Environment p.873. Exploitation of Data of Alloy Corrosion in High Temperature Gases
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USAElectric furnace for melting glassGoogle
The device for melting glass includes a compartment 1 for melting with a discharge throat 11 defined on top by a mobile carrier 16 having an upper part 18 extending upward above the level of glass and a lower part 17 intended to be totally immersed in the molten glass. Faces of the lower part are formed of a metal or an alloy of metals resistant to corrosion by the molten glass.
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What s erosion do glass tank furnace refractories
The chemical corrosion on tank glass furnace refractories includes molten glass and refractory material reaction caused corrosion glass batching material dusts and refractory material reaction caused corrosion glass batching material volatiles and refractory materials reaction caused corrosion fuel ash composition and combustion products
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(PDF) Corrosion of metals and alloys in molten glasses
Moreover the contact with both hot air and molten glass implies that the alloy has to be resistant to air oxidation and glass corrosion. This work focuses on corrosion of metals by molten glass. A basic test for cor- rosion estimation would be to submerse alloys in molten glass for a while and then observe it.
Get PriceRobert F. Speyer s research works Georgia Tech Research
The corrosion resistance of molybdenum molybdenum disilicide and a SiC(p)/Al2O3 composite to molten E-glass at 1550degC was studied. Mo showed no tendency to oxidize as it was immersed
Get Price
