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A New Microstructural Concept and Water-Free Manufacturing of an Al 2 O 3 -Based Refractory Material for Auxiliary Equipment of Sintering Furnaces.

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Title: A New Microstructural Concept and Water-Free Manufacturing of an Al 2 O 3 -Based Refractory Material for Auxiliary Equipment of Sintering Furnaces.
Authors: Spyrka, Monika1 (AUTHOR) monika.spyrka@p.lodz.pl, Kula, Piotr1 (AUTHOR), Miszczak, Sebastian1 (AUTHOR)
Source: Materials (1996-1944). Sep2025, Vol. 18 Issue 17, p4144. 16p.
Subjects: Refractory materials, Aluminum oxide composites, Manufacturing processes, Furnaces, Heat resistant materials, Mechanical behavior of materials, Microstructure
Abstract: This study presents the development of a novel alumina-based ceramic composite designed for refractory applications in auxiliary components of sintering furnaces. The innovative concept relies on a three-phase microstructural architecture: a fine-grained alumina matrix improves cohesion, coarse particles act as crack propagation barriers, and spherical granules are intentionally introduced to increase porosity while preserving mechanical strength. This design reduces thermal capacity, enhancing the material's energy efficiency under high-frequency thermal cycling and offering potential for operating cost reduction. A further novelty is the water-free forming process, which eliminates issues related to drying and deformation. The material was characterized using scanning electron microscopy (SEM), mechanical strength testing, and refractoriness under load (RUL) analysis to establish the structure–property relationships of the developed composite. The results demonstrate that the developed spherical alumina-based composite possesses excellent thermal and mechanical properties, making it a promising candidate for high-temperature industrial applications, particularly as auxiliary refractory plates. [ABSTRACT FROM AUTHOR]
Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: A New Microstructural Concept and Water-Free Manufacturing of an Al 2 O 3 -Based Refractory Material for Auxiliary Equipment of Sintering Furnaces.
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  Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. Sep2025, Vol. 18 Issue 17, p4144. 16p.
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  Data: <searchLink fieldCode="DE" term="%22Refractory+materials%22">Refractory materials</searchLink><br /><searchLink fieldCode="DE" term="%22Aluminum+oxide+composites%22">Aluminum oxide composites</searchLink><br /><searchLink fieldCode="DE" term="%22Manufacturing+processes%22">Manufacturing processes</searchLink><br /><searchLink fieldCode="DE" term="%22Furnaces%22">Furnaces</searchLink><br /><searchLink fieldCode="DE" term="%22Heat+resistant+materials%22">Heat resistant materials</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Microstructure%22">Microstructure</searchLink>
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  Data: This study presents the development of a novel alumina-based ceramic composite designed for refractory applications in auxiliary components of sintering furnaces. The innovative concept relies on a three-phase microstructural architecture: a fine-grained alumina matrix improves cohesion, coarse particles act as crack propagation barriers, and spherical granules are intentionally introduced to increase porosity while preserving mechanical strength. This design reduces thermal capacity, enhancing the material's energy efficiency under high-frequency thermal cycling and offering potential for operating cost reduction. A further novelty is the water-free forming process, which eliminates issues related to drying and deformation. The material was characterized using scanning electron microscopy (SEM), mechanical strength testing, and refractoriness under load (RUL) analysis to establish the structure–property relationships of the developed composite. The results demonstrate that the developed spherical alumina-based composite possesses excellent thermal and mechanical properties, making it a promising candidate for high-temperature industrial applications, particularly as auxiliary refractory plates. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.3390/ma18174144
    Languages:
      – Code: eng
        Text: English
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        PageCount: 16
        StartPage: 4144
    Subjects:
      – SubjectFull: Refractory materials
        Type: general
      – SubjectFull: Aluminum oxide composites
        Type: general
      – SubjectFull: Manufacturing processes
        Type: general
      – SubjectFull: Furnaces
        Type: general
      – SubjectFull: Heat resistant materials
        Type: general
      – SubjectFull: Mechanical behavior of materials
        Type: general
      – SubjectFull: Microstructure
        Type: general
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      – TitleFull: A New Microstructural Concept and Water-Free Manufacturing of an Al 2 O 3 -Based Refractory Material for Auxiliary Equipment of Sintering Furnaces.
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            NameFull: Spyrka, Monika
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            NameFull: Kula, Piotr
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            NameFull: Miszczak, Sebastian
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          Dates:
            – D: 01
              M: 09
              Text: Sep2025
              Type: published
              Y: 2025
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              Value: 18
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            – TitleFull: Materials (1996-1944)
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