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<p>High-temperature industries, as the primary consumers of energy, are greatly concerned with energy savings. Designing refractory linings with low thermal conductivity to reduce heat dissipation through high-temperature furnace linings is a critical concern. In this study, a series of novel entropy-stabilized spinel materials are reported, and their potential applications in high-temperature industries are investigated. XRD and TEM results indicate that all materials possess a cubic spinel crystal structure with the <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="12598_2025_3265_Article_IEq1.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="48" /> </InlineMediaObject> <EquationSource Format="TEX">\(Fd\overline{3} m\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>F</mi> <mi>d</mi> <mover> <mn>3</mn> <mo>¯</mo> </mover> <mi>m</mi> </mrow> </math></EquationSource> </InlineEquation> space group. Furthermore, these materials exhibit good phase stability at high temperatures. All entropy-stabilized spinel aggregates demonstrated high refractoriness (&gt; 1800&#xa0;°C) and a high load softening temperature (&gt; 1700&#xa0;°C). The impact of configurational entropy on the properties of entropy-stabilized spinel materials was also studied. As configurational entropy increased, the thermal conductivity of the entropy-stabilized spinel decreased, while slag corrosion resistance deteriorated. For the entropy-stabilized spinel with a configurational entropy value of 1.126<i>R</i>, it showed good high-temperature stability, reliable resistance to slag attack, and a low thermal conductivity of 2.776 W·m<sup>−1</sup>·K<sup>−1</sup> at 1000&#xa0;°C.</p> Graphical abstract <p></p>

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Novel entropy-stabilized spinel materials and their potential application in high-temperature industry: [(MgxZn(1−x)/2Cu(1−x)/2) (Al0.9Fe0.1)2O4] (x = 0.5, 0.6, 0.7, and 0.8)

  • 期刊论文

  • 发表日期：

    2025年3月31日

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  • Bo-Kang Li,
  • Lv-Ping Fu,
  • Hua-Zhi Gu,
  • Ao Huang,
  • Shuang Yang

摘要

High-temperature industries, as the primary consumers of energy, are greatly concerned with energy savings. Designing refractory linings with low thermal conductivity to reduce heat dissipation through high-temperature furnace linings is a critical concern. In this study, a series of novel entropy-stabilized spinel materials are reported, and their potential applications in high-temperature industries are investigated. XRD and TEM results indicate that all materials possess a cubic spinel crystal structure with the \(Fd\overline{3} m\) F d 3 ¯ m space group. Furthermore, these materials exhibit good phase stability at high temperatures. All entropy-stabilized spinel aggregates demonstrated high refractoriness (> 1800 °C) and a high load softening temperature (> 1700 °C). The impact of configurational entropy on the properties of entropy-stabilized spinel materials was also studied. As configurational entropy increased, the thermal conductivity of the entropy-stabilized spinel decreased, while slag corrosion resistance deteriorated. For the entropy-stabilized spinel with a configurational entropy value of 1.126R, it showed good high-temperature stability, reliable resistance to slag attack, and a low thermal conductivity of 2.776 W·m−1·K−1 at 1000 °C.

Graphical abstract