Powder metallurgy processing of seven/eight component multi-phase (HfTiZr-Mn/Mo/W/Cr/Ta)B2 high entropy diboride ceramics

İlayda Süzer; Amir Akbari; Semih Ates; Kübra Gürcan Bayrak; Sıddıka Mertdinç-Ülküseven; C. Fahir Arisoy; M. Lütfi Öveçoğlu; Duygu Ağaoğulları

Results in Engineering (Dec 2024)

Powder metallurgy processing of seven/eight component multi-phase (HfTiZr-Mn/Mo/W/Cr/Ta)B2 high entropy diboride ceramics

İlayda Süzer,
Amir Akbari,
Semih Ates,
Kübra Gürcan Bayrak,
Sıddıka Mertdinç-Ülküseven,
C. Fahir Arisoy,
M. Lütfi Öveçoğlu,
Duygu Ağaoğulları

Affiliations

İlayda Süzer: Istanbul Technical University, Faculty of Chemical and Metallurgical Engineering, Department of Metallurgical and Materials Engineering, Particulate Materials Laboratories (PML), Graphene & 2D Materials Laboratory, 34469, Maslak, Istanbul, Turkiye; Corresponding author.
Amir Akbari: Istanbul Technical University, Faculty of Chemical and Metallurgical Engineering, Department of Metallurgical and Materials Engineering, Particulate Materials Laboratories (PML), Graphene & 2D Materials Laboratory, 34469, Maslak, Istanbul, Turkiye
Semih Ates: Istanbul Technical University, Faculty of Chemical and Metallurgical Engineering, Department of Metallurgical and Materials Engineering, 34469, Maslak, Istanbul, Turkiye
Kübra Gürcan Bayrak: Eskişehir Technical University, Faculty of Engineering, Department of Materials Science and Engineering, İki Eylül Campus, 26555, Eskişehir, Turkiye
Sıddıka Mertdinç-Ülküseven: Istanbul Technical University, Faculty of Chemical and Metallurgical Engineering, Department of Metallurgical and Materials Engineering, Particulate Materials Laboratories (PML), Graphene & 2D Materials Laboratory, 34469, Maslak, Istanbul, Turkiye
C. Fahir Arisoy: Istanbul Technical University, Faculty of Chemical and Metallurgical Engineering, Department of Metallurgical and Materials Engineering, 34469, Maslak, Istanbul, Turkiye
M. Lütfi Öveçoğlu: Istanbul Technical University, Faculty of Chemical and Metallurgical Engineering, Department of Metallurgical and Materials Engineering, Particulate Materials Laboratories (PML), Graphene & 2D Materials Laboratory, 34469, Maslak, Istanbul, Turkiye; MEF University, Department of Mechanical Engineering, 34396, Sarıyer, Istanbul, Turkiye
Duygu Ağaoğulları: Istanbul Technical University, Faculty of Chemical and Metallurgical Engineering, Department of Metallurgical and Materials Engineering, Particulate Materials Laboratories (PML), Graphene & 2D Materials Laboratory, 34469, Maslak, Istanbul, Turkiye; Corresponding author.

Journal volume & issue: Vol. 24
p. 102976

Abstract

Read online

This study aims to show the possibility of synthesizing seven- and eight-component high entropy diboride (HEB) ceramics using high energy ball milling-assisted spark plasma sintering (SPS). Metal boride powders, synthesized in laboratory conditions from metal oxide-boron oxide-magnesium powder blends, were combined equimolarly as seven and eight components containing systems. Afterwards, hybridized powders were mechanically alloyed (MA) for 6 h and subjected to spark plasma sintering (SPS) at 2000 °C and under 30 MPa. Detailed phase analysis and physical, microstructural, and mechanical characterization of the samples were performed. ın the sintered products, the main phase belongs to the HEB, and also low amounts of Hf/Zr oxides and secondary phases (W or Ti-rich) occurred. The highest hardness was observed at the (HfTiZrMoWCrTa)B2 with ∼25 GPa, and the lowest hardness was seen at the (HfTiZrMnCrMoWTa)B2 with ∼17 GPa. Also, the highest wear resistance was calculated for the (HfTiZrMnCrMoTa)B2 as 6.05 × 10−7 mm3/Nm. Additionally, (HfTiZrMnMoWTa)B2 and (HfTiZrMnMoCrTa)B2 have the highest and lowest Archimedes’ densities, with 7.94 g/cm3 and 6.91 g/cm3, respectively.

Published in Results in Engineering

ISSN: 2590-1230 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology
Website: https://www.journals.elsevier.com/results-in-engineering

About the journal

Abstract

Keywords