Mechanical properties and microstructure of Ti(C, N) based cermet cutting tool materials fabricated by microwave sintering

Hu, Hanpeng; Cheng, Yu; Yin, Zengbin; Zhang, Yong; Lu, Taiyi

doi:10.1016/j.ceramint.2015.08.053

Cited by 26 publications

(5 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Therefore, the density of the material was reduced, which was consistent with the effect of the Ta content on the relative density of the Ti(C,N) -based cermets. However, the overall relative density of the (Ti,W)C-xTa-based cermets was higher than that of the Ti(C,N)-based cermets [27]. When the Ta content increased from 0 to 5 wt.%, the hardness of the (Ti,W)C-xTa-based cermets increased first and subsequently decreased; it reached a maximum at 14.1 GPa when 1 wt.% Ta was added, as shown in Figure 9.…”

Section: Mechanical Propertiesmentioning

confidence: 82%

Effect of Ta Content on Microstructure and Properties of (Ti,W)C-Based Cermets

Zhang

Liao

Yang

et al. 2022

Metals

View full text Add to dashboard Cite

(Ti,W)C-based cermets are an ideal material for the preparation of high-performance cutting tools due to their excellent mechanical properties, high temperature oxidation resistance, and corrosion resistance. However, their lower toughness limits the application of cutting tools. In order to solve the problem of low toughness faced by the current materials used in tools, in this study, a (Ti,W)C solid solution was used as the hard phase to prepare cermets with high toughness via vacuum sintering. The effects of Ta content on the composition, morphology, and microstructure of the cermets were analyzed through XRD analysis and SEM and EDS characterization methods. The mechanical properties such as hardness, transverse fracture strength, and the fracture toughness of the cermets and corrosion resistance in an HNO3 solution were also investigated. The results show that the microstructure of (Ti,W)C solid solution-based cermets exhibit simpler core-rim (single-rim) and acyclic structures, which weaken the formation and propagation of cracks at the interface. The relative density and grain size of cermets increases and decreases, respectively, with the greater amount of Ta addition, while excessive Ta addition leads to a decrease in the relative density and agglomeration between grains. The cermet with 3 wt.% Ta addition possessed excellent mechanical properties with a Vickers hardness, transverse rupture strength, and fracture toughness of 13 GPa, 1907.4 MPa, and 15.5 MPa m1/2, respectively. The addition of Ta leads to the formation of a Ta-rich protective layer on the surface of the cermet under the corrosion of the acidic solution, and with the increase in the Ta content, the corrosion resistance of the cermet gradually improves.

show abstract

Section: Mechanical Propertiesmentioning

confidence: 82%

Effect of Ta Content on Microstructure and Properties of (Ti,W)C-Based Cermets

Zhang

Liao

Yang

et al. 2022

Metals

View full text Add to dashboard Cite

show abstract

“…The mechanical properties of ceramic tools have great dependence on the sintering processes. In order to improve the mechanical properties of ceramic tool materials, various sintering technologies have been used, such as conventional sintering (pressureless sintering [4][5], hot pressing sintering [6][7] and hot isostatic pressing sintering [8][9]), gas-pressure sintering [10], microwave sintering [11][12] and spark plasma sintering [13][14]. When sintered by the conventional sintering, slow heating rate, high sintering temperature and long holding time are generally needed in order to fabricate the fully dense ceramics.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and mechanical properties of Al 2 O 3 /Ti(C, N) ceramic tool materials by one-step and two-step microwave sintering

Yin

Yuan

Cheng

et al. 2016

Materials Science and Engineering: A

Self Cite

View full text Add to dashboard Cite

“…So far, many technologies have been developed to fabricate Ti(C,N)-based cermets, such as hot-press sintering (HPS) [ 11 ], microwave sintering [ 12 ], and hot isostatic pressing sintering (HIPS) [ 13 ]. Microwave sintering can improve the density of the cermets, but causes a reduction in the hardness to a certain extent.…”

Section: Introductionmentioning

confidence: 99%

“…However, the poor wettability between the binder phase and the Ti(C,N) hard phase, as well as the low fracture toughness of the cermets, hinder the application of Ti(C,N) cermets. So far, many technologies have been developed to fabricate Ti(C,N)-based cermets, such as hot-press sintering (HPS) [11], microwave sintering [12], and hot isostatic pressing sintering (HIPS) [13]. Microwave sintering can improve the density of the cermets, but causes a reduction in the hardness to a certain extent.…”

Section: Introductionmentioning

confidence: 99%

Effect of Mo2C Addition on the Tribological Behavior of Ti(C,N)-Based Cermets

Qiu

Pan

et al. 2023

Materials

View full text Add to dashboard Cite

Due to the excellent properties of Ti (C,N)-based ceramics, such as high hardness, excellent wear resistance, exceptional thermal deformation resistance, and sound chemical stability, they have been widely used in cutting tools or molds. Thus, revealing their tribological behavior against hard materials is of great significance. Some studies have reported the tribological behavior of Ti(C,N)-based cermets and hard cermets, but so far, the effects of Mo2C additions on the frictional properties of Ti(C,N)-based cermets are still unclear. In this study, Ti(C,N)-10WC-1Cr3C2-5Co-10Ni-x Mo2C cermets (x = 4, 6, 8, 10 and 12 wt.%) were sintered using a vacuum hot-pressing furnace. Furthermore, the core–rim morphologies of the sintered samples were observed in SEM images. Then, the wear resistance of the cermets was studied against a Si3N4 ball at a 50 N load using the fretting wear test. Finally, the wear mechanism was characterized using a combination of SEM, EDS and XPS. The experimental results indicated that the wear mechanisms of the cermets were mainly abrasive wear, adhesive wear, and the formation of an oxide film. As the content of Mo2C increased from 4 wt.% to 12 wt.%, the friction coefficient and wear volume had a variation law of first decreasing and then decreasing, and reached minimum values at 6 wt.% and 12 wt.%, and the lowest friction coefficient and wear rate were 0.49 and 0.9 × 10−6 mm3/Nm, respectively. The 6 wt.% Mo2C greatly improved the hardness and fracture toughness of the cermet, while the 12 wt.% Mo2C promoted the formation of an oxide film and protected the friction surface. The cermet with 6 wt.% Mo2C is recommended because it has comprehensive advantages in terms of its mechanical properties, tribological properties, and cost.

show abstract

Mechanical properties and microstructure of Ti(C, N) based cermet cutting tool materials fabricated by microwave sintering

Cited by 26 publications

References 24 publications

Effect of Ta Content on Microstructure and Properties of (Ti,W)C-Based Cermets

Effect of Ta Content on Microstructure and Properties of (Ti,W)C-Based Cermets

Microstructure and mechanical properties of Al 2 O 3 /Ti(C, N) ceramic tool materials by one-step and two-step microwave sintering

Effect of Mo2C Addition on the Tribological Behavior of Ti(C,N)-Based Cermets

Contact Info

Product

Resources

About