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In Honor of Nobel Laureate Dr. Aaron Ciechanover

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SIPS 2025 takes place from November 17-20, 2025 at the Dusit Thani Mactan Resort in Cebu, Philippines

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More than 400 abstracts submitted from over 50 countries
Abstracts Still Accepted for a Limited Time



Featuring many Nobel Laureates and other Distinguished Guests

ADVANCED PROGRAM

Orals | Summit Plenaries | Round Tables | Posters | Authors Index


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Oral Presentations


08:00 SUMMIT PLENARY - Dusit Ballroom
12:00 LUNCH - Tradewinds Café

SESSION:
CompositeThuPM1-R1
Meyers International Symposium (11th Intl. Symp. on Composite, Ceramic & Nano Materials Processing, Characterization & Applications)
Thu. 20 Nov. 2025 / Room: Dusit 1
Session Chairs: Lisley Madeira Coelho; Student Monitors: TBA

13:20: [CompositeThuPM102] OS
FEASIBILITY OF COLD SINTERING PROCESSING OF PURE NIOBIUM FOR ADVANCED APPLICATIONS
Pedro Henrique Poubel Mendonça Da Silveira1; Ary Machado De Azevedo1; Derick Horrana Souza Trindade1; Plínio Honorato Muella Peixoto1; Marllon Fraga Silva1; Lisley Madeira Coelho1; Sergio Monteiro1; Marcelo Henrique Prado Da Silva1
1Military Institute of Engineering, Rio de Janeiro, Brazil
Paper ID: 53 [Abstract]

Niobium is a strategic material for Brazil, a country that holds the largest global reserves of this element. However, its sintering presents significant challenges, mainly due to the high reactivity of the metal, which promotes oxide formation and hinders consolidation. This study aimed to investigate the feasibility of cold sintering of niobium at different temperatures, seeking to minimize oxidative effects and enable new technological applications. The material used was supplied by CBMM (Companhia Brasileira de Metalurgia e Mineração), and experiments were conducted at temperatures of 125 °C, 150 °C, and 175 °C. To promote the formation of a transient liquid phase, niobium powders were mixed with 10 wt.% of absolute ethanol. Sintering was performed under a simultaneous pressure of 300 MPa, with a holding time of 30 minutes at each specified temperature. After processing, the samples were characterized through density measurements, scanning electron microscopy (SEM), and X-ray diffraction (XRD) analyses. The results indicated that cold sintering of niobium was effective even at the relatively low temperatures employed. XRD analysis revealed only minor peaks corresponding to the NbO phase, indicating a low incidence of oxidation during the process. These findings demonstrate the feasibility of cold sintering pure niobium, paving the way for the development of new components and applications, with advantages in reducing processing temperatures and preserving metallic properties. The use of cold sintering techniques thus represents a promising alternative for processing highly reactive metals such as niobium.



14:20 POSTERS - Ballroom Foyer