Potentials of nanostructured WC–Co hardmetal as reference material for Vickers hardness

Fabijanić, Tamara Aleksandrov; Alar, Željko; Pötschke, Johannes

doi:10.1016/j.ijrmhm.2014.12.006

Cited by 12 publications

(14 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The range of applications in which nanostructured cemented carbides are used grows rapidly [1]. Nanostructured cemented carbides are characterised by a unique combination of a very fine grained homogenous microstructure and good mechanical properties, which makes them the best choice for many areas of application.…”

Section: Introductionmentioning

confidence: 99%

Influence of consolidation process and sintering temperature on microstructure and mechanical properties of near nano- and nano-structured WC-Co cemented carbides

Fabijanić¹,

Alar²,

Ćorić³

2016

International Journal of Refractory Metals and Hard Materials

Self Cite

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Influence of consolidation process and sintering temperature on microstructure and mechanical properties of near nano- and nano-structured WC-Co cemented carbides

Fabijanić¹,

Alar²,

Ćorić³

2016

International Journal of Refractory Metals and Hard Materials

Self Cite

View full text Add to dashboard Cite

“…Cemented carbides with remarkable mechanical properties and widely potential applications are one of the most attractive powder metallurgy materials [1]. Basically, cemented carbide consists of carbide particles cemented into a composite by a ductile binder material.…”

mentioning

confidence: 99%

Influence of sintering temperature on microstructure and mechanical properties of WC-8Ni cemented carbide produced by vacuum sintering

Phuong

Trinh

Luong

et al. 2016

Ceramics International

View full text Add to dashboard Cite

“…Consequently, the WC-10Co-1 sample is characterized by a marginally higher measured density. Density values vary within the two-phase region of the WC-Co phase, and is increased with an increasing amount of W which remains in the Co binder [ 27 ]. Sample WC-10Co-1 is located at the lower end of the two-phase WC-Co region in the isothermal part of the WC-Co phase diagram.…”

Section: Analysis and Discussionmentioning

confidence: 99%

Influence of Co Content and Chemical Nature of the Co Binder on the Corrosion Resistance of Nanostructured WC-Co Hardmetals in Acidic Solution

et al. 2021

Self Cite

View full text Add to dashboard Cite

The electrochemical corrosion resistance of nanostructured hardmetals with grain sizes dWC < 200 nm was researched concerning Co content and the chemical nature of the Co binder. Fully dense nanostructured hardmetals with the addition of grain growth inhibitors GGIs, VC and Cr3C2, and 5 wt.%Co, 10 wt.%Co, and 15 wt.%Co were developed by a one cycle sinter-HIP process. The samples were detailly characterized in terms of microstructural characteristics and researched in the solution of H2SO4 + CO2 by direct and alternative current techniques, including electrochemical impedance spectroscopy. Performed analysis revealed a homogeneous microstructure of equal and uniform grain size for different Co contents. The importance of GGIs content adjustment was established as a key factor of obtaining a homogeneous microstructure with WC grain size retained at the same values as in starting mixtures of different Co binder content. From the conducted research, Co content has shown to be the dominant influential factor governing electrochemical corrosion resistance of nanostructured hardmetals compared to the chemical composition of the Co binder and WC grain size. Negative values of Ecorr measured for 30 min in 96% H2SO4 + CO2 were obtained for all samples indicating material dissolution and instability in acidic solution. Higher values of Rp and lower values of icorr and vcorr were obtained for samples with lower Co content. In contrast, the anodic Tafel slope increases with increasing Co content which could be attributed to more pronounced oxidation of the higher Co content samples. Previously researched samples with the same composition but different chemical composition of the binder were introduced in the analysis. The chemical composition of the Co binder showed an influence; samples with lower relative magnetic saturation related to lower C content added to the starting mixtures and more W dissolved in the Co binder during the sintering process showed better corrosion resistance. WC-5Co sample with significantly lower magnetic saturation value showed approximately 30% lower corrosion rate. WC-10Co sample with slightly lower relative magnetic saturation value and showed approximately 10% lower corrosion rate. Higher content of Cr3C2 dissolved in the binder contributed to a lower corrosion rate. Slight VC increase did not contribute to corrosion resistance. Superior corrosion resistance is attributed to W and C dissolved in the Co binder, lower magnetic saturation, or WC grain size of the sintered sample.

show abstract

Potentials of nanostructured WC–Co hardmetal as reference material for Vickers hardness

Cited by 12 publications

References 2 publications

Influence of consolidation process and sintering temperature on microstructure and mechanical properties of near nano- and nano-structured WC-Co cemented carbides

Influence of consolidation process and sintering temperature on microstructure and mechanical properties of near nano- and nano-structured WC-Co cemented carbides

Influence of sintering temperature on microstructure and mechanical properties of WC-8Ni cemented carbide produced by vacuum sintering

Influence of Co Content and Chemical Nature of the Co Binder on the Corrosion Resistance of Nanostructured WC-Co Hardmetals in Acidic Solution

Contact Info

Product

Resources

About