Effect of Al addition on creep resistance of MgO-Al2O3 composite for sliding plate at 1400 °C

Tong, Shanghao; Li, Yong; Zhao, Jun; Yan, Mi; Sun, Jia; Jiang, Peng; Kumar, Rupesh

doi:10.1016/j.ceramint.2017.05.330

Cited by 9 publications

(3 citation statements)

References 24 publications

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“…Sun et al [17] clearly explained the aluminium alloy, titanium oxide, and magnesium oxide-based composite in heat treatment condition with the help of SEM images and XRD images. Tong et al [18] also investigated the alumina and magnesium oxide composite-based mechanical properties enhancement by heat treatment.…”

Section: Introductionmentioning

confidence: 99%

[Retracted] Strength Enhancement Study on Composites of AA6066 Aluminium Alloy with Magnesium Oxide and Coal Ash

Sankar¹,

Aruna²,

Sathish

et al. 2021

Advances in Materials Science and Engineering

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Aluminium alloy is the most favourable material based on the various properties and economic factors. Always there are so many researches going on based on the enhancement of the material properties with various combinations and the various materials mixing rate depending upon the availability. These researches were focused on the augmentations of the properties, and then the corresponding properties can be used in the various applications depending upon the results. In this study, the AA6066 aluminium alloy composites were created with the magnesium oxide and coal ash with a variety of grouping. The specimens were named as AAMgOCA 1 to AAMgOCA 6 with respect to the volume concentration composition. Then, the composites were tested to identify the impact on various strengths such as yield strength, ultimate tensile strength, shear strength, and flexural strength. These strengths were compared with the two conditions of the composites such as annealed and heat-treated conditions. AAMgOCA 3 has the greatest results in heat-treated condition when compared with the annealed condition.

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Section: Introductionmentioning

confidence: 99%

[Retracted] Strength Enhancement Study on Composites of AA6066 Aluminium Alloy with Magnesium Oxide and Coal Ash

Sankar¹,

Aruna²,

Sathish

et al. 2021

Advances in Materials Science and Engineering

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“…The fitting equation for creep curves reported in Table 3 has the same expression for each sample, y = Aexp(‐ x /a) + Bexp(‐ x /b) + c, where y denotes the creep strain, x is the time, and A, B, a, b, and c represent the experimental constants 14 . The fitting coefficients exceeded 0.936 in each case, which demonstrated that the fitted equations are a good representation of the real creep behavior.…”

Section: Resultsmentioning

confidence: 99%

Research on high‐temperature creep properties of Al₂O₃‐MgAl₂O₄ refractory

Zhang

2022

Int J Applied Ceramic Tech

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In this study, the Al2O3‐MgAl2O4 refractory samples were prepared with tabular alumina and fused magnesia‐alumina spinel as the raw materials. A creep resistance test was performed at 1400°C and studied. The tested samples after the creep resistance test were characterized and analyzed by X‐ray diffraction, scanning electron microscopy, and energy‐dispersive X‐ray spectroscopy to investigate the effect of adding the amount and particle size of MgAl2O4 on high‐temperature creep resistance of Al2O3‐MgAl2O4 refractory, as well as its mechanism. As indicated by the results, under the same amount of spinel added, the sample with 3‐1 mm spinel had higher creep resistance than the sample with 1‐0 mm spinel. In the creep test, spinel aggregates would react with the alumina matrix to form a secondary spinel layer around the spinel particles, thereby connecting the matrix and the aggregates and improving the creep resistance of the specimens. As clearly indicated by the observed result of the microstructure, in the formation of the secondary spinel layer, Mg2+ had a higher migration rate and showed the secondary spinel layer's higher thickness ratio on both sides of the reaction interface, which would induce the Kirkendall effect. Accordingly, considerable pores generated and accumulating at the interface tended to reduce the creep resistance of the material, and this effect was highly dependent on the size of the spinel and the activation solid solution reaction intensity.

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“…In consideration of calcium zirconate with higher melting point (>2250°C), zirconia-based plate was developed for calcium treatment steelmaking process and achieved good performances. Owing to the high cost of zirconia-based sliding plate, MgO-based sliding plate was developed [5,6]. Nevertheless, thermal shock resistance of the MgO-based sliding plate was considerably influenced, due to high thermal expansion coefficient (13.6 × 10 −6 ) of MgO.…”

Section: Introductionmentioning

confidence: 99%

Effect of modified MgO aggregates on mechanical properties of magnesium aluminate spinel refractories

Shi

Xia

et al. 2020

Ironmaking & Steelmaking

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Magnesium aluminate spinel (MA spinel) refractory samples were prepared and their cold and hot modulus of rupture, thermal shock resistance were determined, phase composition and microstructure were analyzed by means of XRD and SEM. Experimental results showed that: with introduction of MgO aggregates modified by α-Al 2 O 3 ultrafine powder coating approach, considerable amount of well-developed spinel (MgAl 2 O 4 ) was in-situ formed on the surface of MgO aggregates, being beneficial to reducing expansion stress and enhancing thermal shock resistance of the material, evidenced by the residual strength retention rate of 78.3%; with addition of MgO aggregates modified respectively by hydration and APS coating approaches, hot modulus of rupture (HMOR) of the material can be improved, due to the accelerated sinterability and improved interfacial bond degree of MgO aggregates and matrix, which was brought by micro and nano scaled activated secondary MgO decomposed from hydrated Mg(OH) 2 under heating.

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Effect of Al addition on creep resistance of MgO-Al2O3 composite for sliding plate at 1400 °C

Cited by 9 publications

References 24 publications

[Retracted] Strength Enhancement Study on Composites of AA6066 Aluminium Alloy with Magnesium Oxide and Coal Ash

[Retracted] Strength Enhancement Study on Composites of AA6066 Aluminium Alloy with Magnesium Oxide and Coal Ash

Research on high‐temperature creep properties of Al₂O₃‐MgAl₂O₄ refractory

Effect of modified MgO aggregates on mechanical properties of magnesium aluminate spinel refractories

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Effect of Al addition on creep resistance of MgO-Al2O3 composite for sliding plate at 1400 °C

Cited by 9 publications

References 24 publications

[Retracted] Strength Enhancement Study on Composites of AA6066 Aluminium Alloy with Magnesium Oxide and Coal Ash

[Retracted] Strength Enhancement Study on Composites of AA6066 Aluminium Alloy with Magnesium Oxide and Coal Ash

Research on high‐temperature creep properties of Al2O3‐MgAl2O4 refractory

Effect of modified MgO aggregates on mechanical properties of magnesium aluminate spinel refractories

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Product

Resources

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Research on high‐temperature creep properties of Al₂O₃‐MgAl₂O₄ refractory