Mechanical Behaviour of MgO-CaZrO3-Based Refractories for
The system Clinker-MgO-CaZrO3 and its application to the corrosion behavior of CaZrO3/MgO refractory matrix by clinker J. Eur. Ceram. Soc. 29 (11) (2009). DOI 10.1016/j.jeurceramsoc.2009.01.015
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Modeling and experiment of slag corrosion on the
ModelIng and experIMent of Slag corroSIon on the lIghtweIght aluMIna refractory wIth StatIc MagnetIc fIeld facIng green Metallurgy a. huanga b p. lian a l. fu a h. gu a y.Zou a aThe State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and Technology Wuhan China
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Formation Mechanism of In Situ Intergranular CaZrO3 Phases
The effect of the microstructure on the slag corrosion behavior of magnesia aggregates requires further systematic investigation. The corrosion behavior of a MgO/CaZrO3 refractory matrix by
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Correlation of Thermo-Elastic Material and Corrosion
Corrosion is one of the most common wear mechanisms of refractories. Corrosive attacks lead to chemical and microstructural changes. Hot corrosion compromises chemical and/or physical interactions. Thus the process is complex and not yet fully understood. Currently corrosion is investigated post mortem by means of X-ray diffraction or scanning electron microscopy.
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Review on the elaboration and characterization of ceramics
Corrosion behavior of MgO/CaZrO3 refractory matrix by clinker was studied by Serena et al. 39 . The attack mechanism to substrates of 80 MgO and 20 CaZrO3 (wt. ) obtained from dolomite and ZrO2 mixtures and MgO and presintetized CaZrO3 mixtures is established.
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Production and properties of refractory raw materials
radial micro cracks of the matrix around the aggregates (Fig. 5). This has been recog-nized as one of the main reasons for the outstanding thermal shock resistance of an-dalusite based refractory products. Refractoriness under load The hot behavior of a refractory material is strongly dependent on the mineralogical Refractory properties and
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Production and properties of refractory raw materials
radial micro cracks of the matrix around the aggregates (Fig. 5). This has been recog-nized as one of the main reasons for the outstanding thermal shock resistance of an-dalusite based refractory products. Refractoriness under load The hot behavior of a refractory material is strongly dependent on the mineralogical Refractory properties and
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KRB1내식성이 향상된 마그네시아계 내화제품의
refractory corrosion resistance Prior art date Application number KRA Other languages English (en) Other versions KRA (ko Inventor 정용석 Original Assignee 한국산업기술대학교산학협력단 Priority date (The priority date is an assumption and
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Corrosion of MgO-C Ladle Refractories.
Industrial refractory brick were tested in the laboratory for their corrosion behavior at high temperatures under protective atmosphere of argon or argon and carbon monoxide. A statistically designed set of experiments provided o polynomial equation of the model for corrosion. S. Akkurt Mechanical Engineering Dept. Izmir Institute of
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KRB1내식성이 향상된 마그네시아계 내화제품의
refractory corrosion resistance Prior art date Application number KRA Other languages English (en) Other versions KRA (ko Inventor 정용석 Original Assignee 한국산업기술대학교산학협력단 Priority date (The priority date is an assumption and
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Improvement of Resistance of MgO-Based Refractory to Slag
A number of researchers have focused on the corrosion behavior between spinel-MgO and slag. Goto and co-workers have found that CaO-Al 2 O 3-SiO 2 slag penetrated into MgO-MgO·Al 2 O 3 spinel bricks could lead to the formation of secondary spinel CaMgSiO 4 Ca 3 MgSi 2 O 8 and MgO as microscopic corrosion products.
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Qualitative and quantitative investigation of post–mortem
Dec 01 2016 · In fact the appearance of the merwinite C 3 MS 2 the akremanite Ca 2 Mg (SiO 7) mayenite C 12 A 7 and Yeelimite CA S ̅ was the warning of the refractory matrix corrosion. Also the deterioration rate of MgAl 2 O 4 was more important in the hottest zone
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Oxidation and Corrosion of Ceramics and Ceramic Matrix
corrosion studies have focused on four major areas during this time frame. These are (I) Oxidation of precursor-based ceramics. (II) Studies of the interphase material in ceramic matrix composites. (III) Water vapor interactions with ceramics particularly in combustion environments. (IV) Development of refractory oxide coatings for silicon
Get PriceReview on the elaboration and characterization of ceramics
Corrosion behavior of MgO/CaZrO3 refractory matrix by clinker was studied by Serena et al. 39 . The attack mechanism to substrates of 80 MgO and 20 CaZrO3 (wt. ) obtained from dolomite and ZrO2 mixtures and MgO and presintetized CaZrO3 mixtures is established.
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Alumina-Rich Castables Microstructural and
of refractory matrix (5 10 30 mm). The corrosion couple was introduced in a resistive furnace at 1400 °C for different time periods and quenched in water prior to X-ray diffraction analysis. In this corrosion test the quantity of slag is low and might limit the reaction once the slag is saturated with the refractory.
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Improvement in Slag Resistance of No-Cement Refractory
Refractory Castables by Matrix Design Hong Peng 1 Jun Liu 2 Qinghu Wang 2 and Yawei Li 2 The expansive behavior is commonly caused by (i) MgO hydration during curing and dry-out stage and calculations were done for the matrix since the corrosion reaction mainly took place in the matrix.
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RefractoryWikipedia
A refractory material or refractory is a material that is resistant to decomposition by heat pressure or chemical attack and retains strength and form at high temperatures. Refractories are polycrystalline polyphase inorganic nonmetallic porous and heterogeneous. They are typically composed of oxides or non oxides like carbides nitrides etc. of the following materials silicon
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DESIGN OF HIGH PERFORMING CHEMICALLY BONDED
But the corrosion resistance decreases in case of T-3 compared to T-2 which shows that with excess addition of spinel beyond 10 lowers the corrosion resistance of the plate The corrosion index and samples after corrosion test are shown in Fig. 4 and Fig. 5 respectively. Fig. 5 Slag corrosion behavior of different formulations
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Molecular dynamics analysis of oxidation segregation and
The focuses of the thesis are heating induced segregation/mixing of refractory alloys along with oxidation and stress corrosion properties of selected fcc metals and thin oxide layers formed on the surfaces thereof. The particular studies include segregation and oxidation simulation of Mo3Ni alloy clusters. These reveal favorable stabilizing oxidation resistance properties due to the Ni
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Josué Amilcar Aguilar MartínezResearcher Professor
The physical properties are reported in terms of density and porosity. The mechanical behavior was studied by a cold crushing strength (CCS) test. In addition the chemical behavior with regard Up to 5 wt of nano-alumina or nano-iron oxide was added to magnesia refractory matrix.
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Issue No. 1Techna Group
The mechano-chemical and microstructural evolution using magnesium-aluminium spinel in a MgO-CaZrO3 sintered refractory matrix acting as ceramic bonding was investigated. The microstructural study reveals MgAl2O4 spinel phase at contact points between MgO and CaZrO3 particles.
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Formation Mechanism of In Situ Intergranular CaZrO3 Phases
The effect of the microstructure on the slag corrosion behavior of magnesia aggregates requires further systematic investigation. The corrosion behavior of a MgO/CaZrO3 refractory matrix by
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(PDF) Corrosion behavior of ZrO 2–SiO 2–Al 2O 3
The ER refractory shows the highest chemical durability of three refractories investigated in this research.Fig. 1 .1Schematics of the experimental setup used for corrosion measurements.8 Fig. 2 .2SEM micrographs of the (a) ER (b) CS-3 and (c) CS-4 refractories before corrosion tests B baddeleyite C corundum E Al 2 O 3 -ZrO 2 laths near
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The system Clinker–MgO–CaZrO3 and its application to the
Aug 01 2009 · The corrosion behavior by clinker of Portland cement of a CaZrO 3-rich/MgO refractory matrix obtained from both natural and synthetic raw materials were also studied. The attack mechanism to CaZrO 3 -rich substrates was discussed in terms of microstructural features of the refractory matrix and the information supplied by the isothermal section
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Correlation of Thermo-Elastic Material and Corrosion
Corrosion is one of the most common wear mechanisms of refractories. Corrosive attacks lead to chemical and microstructural changes. Hot corrosion compromises chemical and/or physical interactions. Thus the process is complex and not yet fully understood. Currently corrosion is investigated post mortem by means of X-ray diffraction or scanning electron microscopy.
Get Price
Improvement of Resistance of MgO-Based Refractory to Slag
A number of researchers have focused on the corrosion behavior between spinel-MgO and slag. Goto and co-workers have found that CaO-Al 2 O 3-SiO 2 slag penetrated into MgO-MgO·Al 2 O 3 spinel bricks could lead to the formation of secondary spinel CaMgSiO 4 Ca 3 MgSi 2 O 8 and MgO as microscopic corrosion products.
Get PriceThe system Clinker–MgO–CaZrO3 and its application to the
The corrosion behavior by clinker of Portland cement of a CaZrO3-rich/MgO refractory matrix obtained from both natural and synthetic raw materials were also studied.
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OPTIMIZATION OF THE CORROSION BEHAVIOR OF MULLITE
of these three is important binder matrix has a special importance for the corrosion behaviour of the whole refractory system because it is more susceptible to corrosion than the stage grains. Thus the improvements of the binder matrix properties are the key function for the improvement of the service lifetime. Mullite stage
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Chemical corrosion of basic refractories by cement kiln
The study of basic refractories corrosion by cement kiln materials was carried out with powder tests and coating tests at the typical temperature range of the sintered material in the transition zone and the sintering zone (1200–1450 °C). The tested basic refractories were magnesia-spinel (MSp) and magnesia–zirconia (MZ) refractory bricks.
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