High-temperature strength behavior of tantalum diboride to 2000 & DEG;C

Editorial Material Nanoscience & Nanotechnology

Reactive consolidation of tough, deformation resistant tantalum monoboride

D. Demirskyi et al.

SCRIPTA MATERIALIA (2023)

Article Materials Science, Ceramics

Deformation-resistant Ta0.2Hf0.8C solid-solution ceramic with superior flexural strength at 2000°C

Dmytro Demirskyi et al.

Summary: In this study, the consolidation, solid-solution formation, and high-temperature properties of tantalum hafnium carbide with a 1 TaC:4 HfC ratio were investigated. It was found that Ta0.2Hf0.8C maintained high toughness and strength at 2000 degrees C. By analyzing shrinkage rate and strain-stress data, activation energies for densification and flexure were estimated.

JOURNAL OF THE AMERICAN CERAMIC SOCIETY (2022)

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Article Materials Science, Ceramics

High-temperature reactive synthesis of the Zr-Ta multiboride with a supercomposite structure

Dmytro Demirskyi et al.

Summary: This study reports the formation of a ceramic composite with a hierarchical superstructure consisting of boride phases. The composite exhibited extremely high hardness and strength, as well as excellent elastic fracture properties.

JOURNAL OF THE AMERICAN CERAMIC SOCIETY (2022)

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Article Nanoscience & Nanotechnology

Allotropic strengthening and in situ phase transformations during ultra-high-temperature flexure of bulk tantalum nitride

D. Demirskyi et al.

Summary: The TaN samples were prepared at 1800 degrees C using spark plasma sintering, resulting in cubic tantalum nitride with a lattice parameter of a = 4.338 angstrom. X-ray diffraction was used to analyze the formation of hexagonal and cubic TaN phases in situ during flexural tests.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2021)

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Article Materials Science, Ceramics