Additive Manufacturing of Tungsten Carbide Surfaces with Extreme Wear Resistivity

Köhn, Florian; Sedlmajer, Michael; Albrecht, J.; Merkel, Markus

doi:10.3390/coatings11101240

Cited by 6 publications

(5 citation statements)

References 24 publications

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“…The publications considered in the following are summarized in Table 4. Basically, the research on the tribological behavior of additively manufactured ceramics and cermets deals with aluminum oxide (Al 2 O 3 ) [171,172], zirconium oxide (ZrO 2 ) [172,173], silicon carbide (SiC) [174], tungsten carbide/cobalt (WC/Co) [175] and chromium carbide (CrC) in a WC/Co matrix [176]. These are produced using different AM processes depending on the raw material as described in previous sections: SLM [171,175], EBM [176], DLP [172,173], SLA [173], binder jetting [172,174], and material jetting [172].…”

Section: Ceramics/cermetsmentioning

confidence: 99%

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Surface Properties and Tribological Behavior of Additively Manufactured Components: A Systematic Review

et al. 2023

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Innovative additive manufacturing processes for resilient and sustainable production will become even more important in the upcoming years. Due to the targeted and flexible use of materials, additive manufacturing allows for conserving resources and lightweight design enabling energy-efficient systems. While additive manufacturing processes were used in the past several decades mainly for high-priced individualized components and prototypes, the focus is now increasingly shifting to near-net-shape series production and the production of spare parts, whereby surface properties and the tribological behavior of the manufactured parts is becoming more and more important. Therefore, the present review provides a comprehensive overview of research in tribology to date in the field of additively manufactured components. Basic research still remains the main focus of the analyzed 165 papers. However, due to the potential of additive manufacturing processes in the area of individualized components, a certain trend toward medical technology applications can be identified for the moment. Regarding materials, the focus of previous studies has been on metals, with stainless steel and titanium alloys being the most frequently investigated materials. On the processing side, powder bed processes are mainly used. Based on the present literature research, the expected future trends in the field of tribology of additively manufactured components can be identified. In addition to further basic research, these include, above all, aspects of process optimization, function integration, coating, and post-treatment of the surfaces.

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Section: Ceramics/cermetsmentioning

confidence: 99%

“…The study by Köhn et al [175] focused on the material class of cermets. They additively manufactured tungsten carbide/cobalt (WC/Co) specimens using the SLM process and compared the tribological behavior with physical vapor deposition (PVD)-coated (WC/Co) steel substrates.…”

Section: Ceramics/cermetsmentioning

confidence: 99%

Surface Properties and Tribological Behavior of Additively Manufactured Components: A Systematic Review

et al. 2023

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“…A recent alternative to vacuum deposition that might become important in some cases in the near future is a production route via additive manufacturing. In these cases, e.g., carbide surfaces with extremely large lifetimes can be prepared [11].…”

Section: Introductionmentioning

confidence: 99%

The Behavior of TiAlN and TiAlCrSiN Films in Abrasive and Adhesive Tribological Contacts

Schulz,

Joukov,

Köhn

et al. 2023

Coatings

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Chromium and silicon are often introduced to increase the performance of TiAlN hard coatings in dry tribological contacts. The addition of Cr and Si during a high-power impulse magnetron sputtering (HiPIMS) deposition process leads to high-quality TiAlCrSiN films. In this paper, the analysis of friction and wear of these films is conducted by oscillation tribometry under dry conditions with a subsequent mapping of the surface topography. Both abrasion- and adhesion-dominated conditions are realized using different steel counter bodies. Oscillation-frequency-dependent experiments show a significant impact of the compositional variation on friction and wear. It is shown that the TiAlCrSiN coating investigated has a higher coefficient of friction and a lower wear resistance compared to counterparts made of 100Cr6. The friction coefficient could be reduced by using a V2A counterpart. The results can be understood in terms of a reduced adhesion of both oxidic and metallic wear debris at the TiAlCrSiN surface. The study provides valuable progress towards the development of advanced cutting tools, e.g., for stainless steel.

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“…Previous investigations have already shown that sinterable WC/Co can be used to a certain extent for the L-PBF process [6]. Similarly, initial results have already been published on the coating of stainless steel with carbides produced by the L-PBF process [7,8]. The analysis of the wear resistance of the prepared surfaces with and without additional surface treatment was performed by quantitative oscillation tribometry.…”

Section: Introductionmentioning

confidence: 99%

Tungsten Carbide-Cobalt: with 3D metal printing to wear-resistant coatings for technical applications

Koehn,

Albrecht,

Merkel

et al. 2022

21st International Sealing Conference 2022

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The mechanical protection of component surfaces sliding on each other against wear, as in mechanical seals, can typically be achieved by the deposition of hard coatings. Depending on the kind of application suitable material combinations and deposition techniques have to be selected. In case of cobalt-based tungsten carbide coatings usually physical vapor deposition (PVD) is used. However, a promising approach uses 3D printing to produce such coatings with enhanced adhesion and extreme wear resistivity. Characterizing those coatings in tribological tests under severe wear inducing conditions, it can be found that the coatings are extremely wear resistant. The measured coefficient of friction against tungsten carbide-cobalt highly depends on the surface topography. It is obtained that different surface properties strongly influence the tribological behaviour.

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Additive Manufacturing of Tungsten Carbide Surfaces with Extreme Wear Resistivity

Cited by 6 publications

References 24 publications

Surface Properties and Tribological Behavior of Additively Manufactured Components: A Systematic Review

Surface Properties and Tribological Behavior of Additively Manufactured Components: A Systematic Review

The Behavior of TiAlN and TiAlCrSiN Films in Abrasive and Adhesive Tribological Contacts

Tungsten Carbide-Cobalt: with 3D metal printing to wear-resistant coatings for technical applications

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