Processing and analysis of FeNbC cermets

Franco, Eliana; Bonetti, Ivandro; Tsipas, S.A.; Gordo, E.; Costa, César Edil da

doi:10.1016/j.ijrmhm.2016.10.012

Cited by 4 publications

(2 citation statements)

References 27 publications

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“…The group develops studies considering improving materials' tribological behaviour through surface changes, increasing materials' tribological performance, especially in parts produced by powder metallurgy [333,[358][359][360][361][362][363][364]. The group has been developing niobium-based tool materials (cermets) [365][366][367][368] and zinc-aluminium alloys [369]. Recently, the group started to work on special titanium alloys for biological use.…”

Section: Brazilian Tribology: Status Quomentioning

confidence: 99%

Brazilian Tribology: origin, status quo and future perspectives

de Mello,

Costa

2023

Surf. Topogr.: Metrol. Prop.

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This first regional issue published in STMP highlights the potential and importance of the research carried out in Latin America regarding surface engineering and tribology. In order to celebrate this important initiative, a complete historical account of Brazilian tribology is presented for the first time. It initiates with the first steps of Brazilian tribology in the 1980s, followed by the evolution and expansion of tribology research both in academic centres and industry. Focus is given to two outstanding achievements of Brazilian tribology: the fully flexible engines that run at any proportion of ethanol and gasoline and a fully innovative, completely oil-less family of hermetic compressors. The status-quo of the current research groups on tribology is described. Finally, the future trends envisaged by the Brazilian tribology community are presented.

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Section: Brazilian Tribology: Status Quomentioning

confidence: 99%

Brazilian Tribology: origin, status quo and future perspectives

de Mello,

Costa

2023

Surf. Topogr.: Metrol. Prop.

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“…Cermets are composite materials that can combine several properties of interest for applications in machining, such as high wear resistance, toughness 1 and good refractoriness. With certain compositions, cermets can reach hardness values close to hard metals and can also be applied in components or coatings which require, in addition to wear resistance, corrosion resistance 2,3 .…”

Section: Introductionmentioning

confidence: 99%

Influence of Milling and Use of Ni and Al Containing Metal Binder in NbC-Based Cermets

et al. 2023

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This study presents the development of niobium carbide cermets bound to nickel and Ni-12Al (wt%). The use of and Ni aims to replace strategic elements such as cobalt (Co) utilized in tungsten carbide-based cermets. Cermets of different compositions were processed by conventional powder metallurgy. Microstructural analysis with semi-quantitative chemical analysis by EDX, Vickers microhardness and density measurement were performed to evaluate the influence of high energy milling application and sintering temperature on the properties of these cermets. A milling time of 20 min in a planetary mill and sintering temperatures of 1420 ºC or 1450 ºC resulted in homogeneous microstructures, densities close to 90% and hardness of around 1000 HV 1 , showing a potential for use of this material in cutting tools.

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Effect of different binders and secondary carbides on NbC cermets

Hübler

Gradt

2022

Forsch Ingenieurwes

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Due to the rapidly increasing price of tungsten carbide and the significant health risks associated with the wear products of WC-Co (Co3O4 and Wo3), an alternative is required. Niobium carbide (NbC) is well suited as a cutting tool due to its high melting point and low solubility in iron. Compared to pure NbC, a complete substitution of WC to NbC-Co resulted in an increased toughness and strength. As alternative binders, nickel and iron-based binders were subsequently investigated. Although iron-based cermets would be an economical, low-cost alternative to NbC-Ni cermets, they showed a higher coefficient of friction and wear rate. So far, NbC-Ni cermets best met the requirements of high hardness and toughness. Various secondary carbides such as VC, Mo2C, TiC, but also WC were added to further improve the hardness. Elemental analyses of NbC-Ni-MeC cermets (Me = metal) showed that the binder is a face-centered cubic solid solution, while the NbC phase is a solid solution of the type (Nb, Me)C.

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Processing and analysis of FeNbC cermets

Cited by 4 publications

References 27 publications

Brazilian Tribology: origin, status quo and future perspectives

Brazilian Tribology: origin, status quo and future perspectives

Influence of Milling and Use of Ni and Al Containing Metal Binder in NbC-Based Cermets

Effect of different binders and secondary carbides on NbC cermets

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