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Powder Metallurgy Volume 65, 2022 - Issue 5
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Keynote papers from EuroPM2021

Influence of different binder metals in high entropy carbide based hardmetals

Johannes Pötschkea Department of Sintering and Characterisation, Fraunhofer IKTS, Dresden, GermanyCorrespondence[email protected]
ORCID Iconhttps://orcid.org/0000-0002-1586-5299View further author information
ORCID Icon,
Anne Vornbergera Department of Sintering and Characterisation, Fraunhofer IKTS, Dresden, GermanyORCID Iconhttps://orcid.org/0000-0001-8920-8972View further author information
ORCID Icon,
Tim Gestricha Department of Sintering and Characterisation, Fraunhofer IKTS, Dresden, GermanyView further author information
,
Lutz-Michael Bergera Department of Sintering and Characterisation, Fraunhofer IKTS, Dresden, GermanyORCID Iconhttps://orcid.org/0000-0002-6446-6745View further author information
ORCID Icon &
Alexander Michaelisa Department of Sintering and Characterisation, Fraunhofer IKTS, Dresden, Germany;b Institute of Materials Science (IfWW), Technische Universität Dresden, Dresden, GermanyORCID Iconhttps://orcid.org/0000-0002-5987-1252View further author information
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Pages 373-381 | Received 23 Dec 2021, Accepted 06 May 2022, Published online: 21 May 2022

Figures & data

Table 1. Composition and properties of the HEC-Me samples.

Figure 1. Length change of the HEC-24 vol-% binder composites during sintering, (a) overview, (b) initial stage of sintering up to 1000°C.

Figure 1. Length change of the HEC-24 vol-% binder composites during sintering, (a) overview, (b) initial stage of sintering up to 1000°C.

Figure 2. Length change rate of the HEC-24 vol-% binder composites during sintering.

Figure 2. Length change rate of the HEC-24 vol-% binder composites during sintering.

Figure 3. Mass change of the HEC-24 vol-% binder composites during sintering, (a) mass loss and (b) mass change rate.

Figure 3. Mass change of the HEC-24 vol-% binder composites during sintering, (a) mass loss and (b) mass change rate.

Figure 4. X-ray diffraction pattern of HEC-Co, HEC-Ni and HEC-FeNi hardmetals with 16 vol-% binder content in the range 2θ = 20–80°.

Figure 4. X-ray diffraction pattern of HEC-Co, HEC-Ni and HEC-FeNi hardmetals with 16 vol-% binder content in the range 2θ = 20–80°.

Table 2. Lattice parameters of the metallic binder phases.

Figure 5. SEM images of HEC-24 vol-% Co (left) and HEC-16 vol-% Co (right).

Figure 5. SEM images of HEC-24 vol-% Co (left) and HEC-16 vol-% Co (right).

Figure 6. EDS mapping of HEC-16 vol-% Co.

Figure 6. EDS mapping of HEC-16 vol-% Co.

Figure 7. SEM images of HEC-24 vol-% Ni (left) and HEC-16 vol-% Ni (right).

Figure 7. SEM images of HEC-24 vol-% Ni (left) and HEC-16 vol-% Ni (right).

Figure 8. EDS mapping of HEC-16 vol-% Ni.

Figure 8. EDS mapping of HEC-16 vol-% Ni.

Figure 9. SEM images of HEC-24 vol-% FeNi (left) and HEC-16 vol-% FeNi (right)

Figure 9. SEM images of HEC-24 vol-% FeNi (left) and HEC-16 vol-% FeNi (right)

Figure 10. EDS mapping of HEC-16 vol-% FeNi.

Figure 10. EDS mapping of HEC-16 vol-% FeNi.

Figure 11. SEM images of WC-16 vol-% Co (WC-10 wt-% Co).

Figure 11. SEM images of WC-16 vol-% Co (WC-10 wt-% Co).

Figure 12. Fracture toughness vs. hardness HV30 of the HEC-Co, HEC-Ni and HEC-FeNi hardmetals with 16 and 24 vol-% binder content.

Figure 12. Fracture toughness vs. hardness HV30 of the HEC-Co, HEC-Ni and HEC-FeNi hardmetals with 16 and 24 vol-% binder content.

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