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Sintering of wet-processed simulated Mars regolith slurries shaped using conventional and laser-induced slip casting (LIS).

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Title: Sintering of wet-processed simulated Mars regolith slurries shaped using conventional and laser-induced slip casting (LIS).
Authors: Casu, Mariano1,2 (AUTHOR), Bahr, Jonathan2 (AUTHOR), Kleba-Ehrhardt, Rafael2 (AUTHOR), Mühler, Thomas3 (AUTHOR), Schwentenwein, Martin4 (AUTHOR), Feyerherm, Ralf5 (AUTHOR), Orrù, Roberto1 (AUTHOR), Cao, Giacomo1 (AUTHOR), Gurlo, Aleksander2 (AUTHOR), Karl, David1,2,6 (AUTHOR) David.Karl@ceramics.tu-berlin.de
Source: Ceramics International. May2026:Part A, Vol. 52 Issue 13, p21303-21316. 14p.
Subjects: Sintering, Slip casting, Resource exploitation, Compressive strength, Three-dimensional printing, Martian atmosphere, Martian surface
Abstract: In the framework of the future manned exploration of planet Mars, the availability of efficient manufacturing techniques for the in-situ exploitation of regolith represents a key target. In this regard, the newly developed Laser Induced Slip-Casting (LIS) technique is investigated in this work, starting from 100% in-situ available materials, as an additive manufacturing route. For the sake of comparison, traditional Slip-Casting (SC) was also employed. The use of clay-containing (2.5 wt%) materials and a Martian saltwater simulant as dispersion medium led to compact green bodies for both LIS and SC technologies. The obtained parts, after being characterized for their thermal stability both in oxidizing and inert conditions, have been sintered to produce dense specimens, with the best results observed operating at 1190 °C for 3h holding time in air, and 1180 °C for 3h in simulated Martian atmosphere. Compositional and magnetic analyses revealed different phase transformations occurring during the thermal treatments, i.e., Magnetite or Hematite formation, indicating that different phenomena occur in air and Martian atmosphere conditions. The modest compressive strength of the LIS-printed green bodies (about 0.9 MPa) can be significantly improved after sintering (about 100 MPa), obtaining values higher than most literature data. The LIS results are still inferior to the outstanding ones obtained in this work via the well-consolidated SC, underlining how promising the more advanced LIS technology, paired with oven sintering, could be in the ISRU framework. • Clay-rich regolith processed with Martian saltwater simulant. • Laser-Induced Slip Casting (LIS) AM parts are compared with slip cast parts. • Sintering in air and CO 2 (925 Pa) yields dense specimens (77–85%). • Composition and magnetism change notably after sintering. • Compressive strength (90–165 MPa) ranks among top ISRU results for Mars. [ABSTRACT FROM AUTHOR]
Copyright of Ceramics International is the property of Elsevier B.V. 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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DbLabel: Engineering Source
An: 193683619
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  Label: Title
  Group: Ti
  Data: Sintering of wet-processed simulated Mars regolith slurries shaped using conventional and laser-induced slip casting (LIS).
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  Data: <searchLink fieldCode="AR" term="%22Casu%2C+Mariano%22">Casu, Mariano</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bahr%2C+Jonathan%22">Bahr, Jonathan</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kleba-Ehrhardt%2C+Rafael%22">Kleba-Ehrhardt, Rafael</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mühler%2C+Thomas%22">Mühler, Thomas</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Schwentenwein%2C+Martin%22">Schwentenwein, Martin</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Feyerherm%2C+Ralf%22">Feyerherm, Ralf</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Orrù%2C+Roberto%22">Orrù, Roberto</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cao%2C+Giacomo%22">Cao, Giacomo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gurlo%2C+Aleksander%22">Gurlo, Aleksander</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Karl%2C+David%22">Karl, David</searchLink><relatesTo>1,2,6</relatesTo> (AUTHOR)<i> David.Karl@ceramics.tu-berlin.de</i>
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  Data: <searchLink fieldCode="JN" term="%22Ceramics+International%22">Ceramics International</searchLink>. May2026:Part A, Vol. 52 Issue 13, p21303-21316. 14p.
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  Data: <searchLink fieldCode="DE" term="%22Sintering%22">Sintering</searchLink><br /><searchLink fieldCode="DE" term="%22Slip+casting%22">Slip casting</searchLink><br /><searchLink fieldCode="DE" term="%22Resource+exploitation%22">Resource exploitation</searchLink><br /><searchLink fieldCode="DE" term="%22Compressive+strength%22">Compressive strength</searchLink><br /><searchLink fieldCode="DE" term="%22Three-dimensional+printing%22">Three-dimensional printing</searchLink><br /><searchLink fieldCode="DE" term="%22Martian+atmosphere%22">Martian atmosphere</searchLink><br /><searchLink fieldCode="DE" term="%22Martian+surface%22">Martian surface</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In the framework of the future manned exploration of planet Mars, the availability of efficient manufacturing techniques for the in-situ exploitation of regolith represents a key target. In this regard, the newly developed Laser Induced Slip-Casting (LIS) technique is investigated in this work, starting from 100% in-situ available materials, as an additive manufacturing route. For the sake of comparison, traditional Slip-Casting (SC) was also employed. The use of clay-containing (2.5 wt%) materials and a Martian saltwater simulant as dispersion medium led to compact green bodies for both LIS and SC technologies. The obtained parts, after being characterized for their thermal stability both in oxidizing and inert conditions, have been sintered to produce dense specimens, with the best results observed operating at 1190 °C for 3h holding time in air, and 1180 °C for 3h in simulated Martian atmosphere. Compositional and magnetic analyses revealed different phase transformations occurring during the thermal treatments, i.e., Magnetite or Hematite formation, indicating that different phenomena occur in air and Martian atmosphere conditions. The modest compressive strength of the LIS-printed green bodies (about 0.9 MPa) can be significantly improved after sintering (about 100 MPa), obtaining values higher than most literature data. The LIS results are still inferior to the outstanding ones obtained in this work via the well-consolidated SC, underlining how promising the more advanced LIS technology, paired with oven sintering, could be in the ISRU framework. • Clay-rich regolith processed with Martian saltwater simulant. • Laser-Induced Slip Casting (LIS) AM parts are compared with slip cast parts. • Sintering in air and CO 2 (925 Pa) yields dense specimens (77–85%). • Composition and magnetism change notably after sintering. • Compressive strength (90–165 MPa) ranks among top ISRU results for Mars. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Ceramics International is the property of Elsevier B.V. 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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      – Type: doi
        Value: 10.1016/j.ceramint.2026.03.213
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      – Code: eng
        Text: English
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        PageCount: 14
        StartPage: 21303
    Subjects:
      – SubjectFull: Sintering
        Type: general
      – SubjectFull: Slip casting
        Type: general
      – SubjectFull: Resource exploitation
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      – SubjectFull: Compressive strength
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      – SubjectFull: Three-dimensional printing
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      – SubjectFull: Martian atmosphere
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      – SubjectFull: Martian surface
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      – TitleFull: Sintering of wet-processed simulated Mars regolith slurries shaped using conventional and laser-induced slip casting (LIS).
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              Text: May2026:Part A
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