論文 Thermal analysis of the components used in the fabrication of Al2O3–Ni and Al2O3–Mo composites via vat photopolymerization followed by spark plasma sintering

Joanna Tanska (Research Center for Functional Materials/Optical Materials Field/Ceramics Processing Group, National Institute for Materials Science) ; Mihai Alexandru Grigoroscuta (National Institute for Materials Physics,) ; Piotr Wiecinski (Warsaw University of Technology) ; Andrzej Ostrowski (Warsaw University of Technology) ; Oleg Vasylkiv SAMURAI ORCID (Research Center for Electronic and Optical Materials/Optical Materials Field/Polycrystalline Optical Material Group, National Institute for Materials Science) ; Tohru S. Suzuki SAMURAI ORCID (Research Center for Electronic and Optical Materials/Optical Materials Field/Optical Ceramics Group, National Institute for Materials Science) ; Paulina Wiecinska (Warsaw University of Technology)

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Joanna Tanska, Mihai Alexandru Grigoroscuta, Piotr Wiecinski, Andrzej Ostrowski, Oleg Vasylkiv, Tohru S. Suzuki, Paulina Wiecinska. Thermal analysis of the components used in the fabrication of Al2O3–Ni and Al2O3–Mo composites via vat photopolymerization followed by spark plasma sintering. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY. 2025, (), . https://doi.org/10.1007/s10973-025-14596-9

説明:

(abstract)

In this study, thermal analysis (including differential thermal analysis and thermogravimetric analysis coupled with mass spectrometry) was used to design the sintering process of alumina as well as Al2O3–Mo and Al2O3–Ni green bodies obtained by digital light processing (DLP) 3D printing. The measurements were performed for selected organic additives, which are commonly used in the DLP technique, such as photoinitiators, dispersing agents, and organic monomers. Additionally, metallic powders (Ni, Mo), as well as ceramic and composite green bodies, have been subjected to thermal analysis. The obtained results allowed us to determine proper sintering conditions for a two-step sintering program. Firstly, the organic phase was burnt out at 400 °C in the air. At this temperature, metallic powders have not yet started to oxidize, and most of the organic additives have already been eliminated from the sample. The second step was performed using spark plasma sintering at 1150 °C with a pressure equaling 60 MPa in an argon atmosphere to prevent the oxidation of metals. The samples were gradually cooled down to 800 °C at a cooling rate of 35 °C min−1 and then furnace-cooled to room temperature, preventing the formation of intrinsic defects (microcracks) in a multicomponent ceramic–metal composite. The XRD and SEM–EDS analysis allowed us to conclude that the obtained composites are well densified, no other phases apart from alumina and metals are present in the samples, and that the alumina grain growth is smaller than for conventional sintering. An increase in fracture toughness for the composite samples was observed compared to pure alumina. https://doi.org/10.1007/s10973-025-14596-9

権利情報:

キーワード: Thermal analysis, ceramic-metal composite, Digital Light Processing (DLP) 3D printing, Spark Plasma Sintering, differential thermal analysis and thermogravimetric analysis coupled with mass spectrometry

刊行年月日: 2025-08-24

出版者: Springer Nature

掲載誌:

  • JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY (ISSN: 15882926)

研究助成金:

  • NIMS and Warsaw University of Technology (WUT), Poland, EU. AB3080, AB 3020, NIMS Internship Program (J. Tanska), IDUB Program of WUT, Poland, EU (J. Tanska was supported by the NIMS Internship Program. Research was also partially funded by the Warsaw University of Technology (WUT) within the Excellence Initiative: Research University (IDUB) programme.)

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1007/s10973-025-14596-9

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更新時刻: 2025-09-02 08:30:18 +0900

MDRでの公開時刻: 2025-09-02 08:17:17 +0900

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