Ti(C,N) cermets — Metallurgy and properties

Ettmayer, Peter; Kolaska, H.; Lengauer, W.; Dreyer, K.

doi:10.1016/0263-4368(95)00027-g

Cited by 548 publications

(294 citation statements)

References 2 publications

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“…Cermets combine the advantages of ceramics and metals [3]; the ceramic phase must mainly provide hardness and wear resistance, whereas the binder phase provides fracture strength and impact resistance [6]. For the hard component, other binary carbides, such as TaC, NbC, Mo 2 C, WC, HfC, VC and ZrC, are added to improve specific properties, for example, thermal shock resistance, hot hardness, chemical stability at high temperature, oxidation resistance and high-temperature creep resistance [7][8][9][10][11]. The binder phase can also contain other minor metallic components (Al, Cr, Mo, Fe, Mn, V or Ce) to support microstructure refinement, particulate dispersion, hardening of the binder and improvement of corrosion resistance [12,13].…”

Section: Introductionmentioning

confidence: 99%

Toughening of complete solid solution cermets by graphite addition

Chicardi

Torres

Sayagués

et al. 2015

Chemical Engineering Journal

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Abstract(Ti 0.95 Ta 0.05 )(C 0.5 N 0.5 )-Co complete solid solution cermets (CSCs) were developed by a mechanochemical synthesis process and a pressureless sintering method. The effect of different percentages of graphite used as a sintering additive on the nature of the binder phase and the mechanical properties of the cermets was investigated. Microstructural and mechanical characterisations were carried out by X-ray diffraction, optical microscopy, scanning electron microscopy, transmission electron microscopy, energydispersive X-ray spectroscopy, Vickers hardness, indentation fracture toughness and nanoindentation. The addition of graphite modified the carbon activity during sintering, reducing the dissolution of carbonitride ceramic particles into the molten binder. The amount of Ti and Ta remaining in the binder after sintering gradually decreased as the amount of graphite added increased, which induced a change in the nature of the binder phase. When no graphite was added, the binder consisted of the brittle Ti x Ta 1-x Co 2 intermetallic phase. With the increase in the amount of graphite added, the formation of more ductile phases, such as Ti x Ta 1-x Co 3 and -Co, was observed, causing a significant improvement in the toughness of the cermets.

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Section: Introductionmentioning

confidence: 99%

Toughening of complete solid solution cermets by graphite addition

Chicardi

Torres

Sayagués

et al. 2015

Chemical Engineering Journal

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“…Ti(C,N) -based cermets, with Ni and/or Co binders, are used increasingly in the cutting and forming industry, due to their high thermal and chemical stability and their excellent combination of hardness, oxidation resistance and toughness [1,2]. However, the use of Co and Ni as metallic…”

Section: Introductionmentioning

confidence: 99%

Influence of carbon content on the sinterability of an FeCr matrix cermet reinforced with TiCN

Alvaredo

Tsipas

Gordo

2013

International Journal of Refractory Metals and Hard Materials

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Influence of carbon content on the sinterability of an FeCr matrix cermet reinforced with TiCN, International Journal of Refractory Metals and Materials, Jan. 2013, v. 36, 283-288 AbstractThe influence of carbon content on an iron-chromium cermet composite reinforced with Ti(C,N) (50 vol%) has been studied. A thermodynamic simulation was performed using the ThermoCalc software to calculate the phase diagram of the composite. The results were validated by a thermal study performed using differential thermal analysis (DTA), and cermet samples with C percentages between 0 and 1 wt% added to the steel matrix were prepared using a conventional powder metallurgy process. The sintered samples were characterised by measurements of density and hardness, microstructural analysis using scanning electron microscopy (SEM), microanalyses using energy dispersive X ray spectroscopy (EDX) and X-ray diffraction (XRD). The results obtained show a significant influence of the C percentage on the solidus temperature, which influences sintering behaviour, leading to changes in the Ti(C,N) particles´ shape and composition, due to changes in the stoichiometry of the Ti(C,N). This influence is reflected in the cermet microstructure and hardness. The results are discussed with reference to the DTA and thermodynamic studies.

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“…The physical and chemical properties of cermets can be adjusted for particular applications by introducing additives to the basic Ti(C,N)-Ni/Co system, which are typically other metal transition carbides [6]. For example, TaC is used when the hot hardness and the thermo shock resistance should be improved.…”

Section: Introductionmentioning

confidence: 99%

“…Many other authors have since proposed the use of different complex solid solutions containing titanium and at least one element selected from the IVB, VB, and VIB groups as raw materials to fabricate cermets with improved properties and performance [6,12,16].…”

Section: Introductionmentioning

confidence: 99%

Inverse core–rim microstructure in (Ti,Ta)(C,N)-based cermets developed by a mechanically induced self-sustaining reaction

Chicardi

Córdoba

Sayagués

et al. 2012

International Journal of Refractory Metals and Hard Materials

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Cermets with a nominal composition (Ti 0.8 Ta 0.2 C 0.5 N 0.5 -20 wt% Co) were synthesised by a mechanically induced self-sustaining reaction (MSR) process from stoichiometric elemental powder blends. The MSR allowed the production of a complex (Ti,Ta)(C,N) solid solution, which was the raw material used for the sintering process. The pressureless sintering process was performed at temperatures between 1400 ºC and 1600 ºC in an inert atmosphere. The microstructural characterisation showed a complex microstructure composed of a ceramic phase with an unusual inverse core-rim structure and a Ti-Ta-Co intermetallic phase that acted as the binder.

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Ti(C,N) cermets — Metallurgy and properties

Cited by 548 publications

References 2 publications

Toughening of complete solid solution cermets by graphite addition

Toughening of complete solid solution cermets by graphite addition

Influence of carbon content on the sinterability of an FeCr matrix cermet reinforced with TiCN

Inverse core–rim microstructure in (Ti,Ta)(C,N)-based cermets developed by a mechanically induced self-sustaining reaction

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