Fabrication and characterization of ZrO2/Ni composites

Justyna Zygmuntowicz , Paweł Falkowski , Aleksandra Miazga , Katarzyna Konopka

Abstract

This paper focuses on a research on the influence of nickel content in zirconia matrix and its impact on the mechanical properties of obtained composites. ZrO2/Ni mixed powders were uniaxially pressed and sintered in a nitrogen atmosphere to obtain ZrO2/Ni composites that were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), and energy-dispersive Xray spectroscopy (EDS). The stereological analysis allows obtaining information about the size distribution of zirconia grains in the sintered composites. Relative density, hardness, fracture toughness, and bending strength were also analyzed. The results revealed that the presence of Ni particles in the composites affects the mechanical properties of the materials. An increased Ni concentration caused a decrease in Vickers hardness and increased the fracture toughness of the ZrO2/Ni composites compared to the ZrO2 samples. This kind of composite is of interest for temperature and flow sensors, thermal barrier coatings for gas turbines and supersonic propulsion systems of spacecrafts, as well as a material for anode in solid oxide fuel cell.
Author Justyna Zygmuntowicz (FMSE / DSMP)
Justyna Zygmuntowicz,,
- Division of Ceramic Materials and Polymers
, Paweł Falkowski (FC / CChT)
Paweł Falkowski,,
- Chair of Chemical Technology
, Aleksandra Miazga (FMSE / DSMP)
Aleksandra Miazga,,
- Division of Ceramic Materials and Polymers
, Katarzyna Konopka (FMSE / DSMP)
Katarzyna Konopka,,
- Division of Ceramic Materials and Polymers
Journal seriesJournal of the Australian Ceramic Society, ISSN 2510-1560, e-ISSN 2510-1579, (A 25 pkt)
Issue year2018
Pages1-8
Publication size in sheets0.5
Keywords in EnglishPressing, Composites, Mechanical properties, ZrO2, Nickel
DOIDOI:10.1007/s41779-018-0194-3
Languageen angielski
File
Fabrication_and_characterization_of_ZrO2Ni_composi.pdf 2.06 MB
Score (nominal)25
ScoreMinisterial score = 25.0, 18-05-2018, ArticleFromJournal
Ministerial score (2013-2016) = 25.0, 18-05-2018, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 0.744 (2) - 2016=0.864 (5)
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