Preparation and characterization of Si3N4/TiN nanocomposites ceramic tool materials

Zou, Bin; Huang, Chuan Zhen; Liu, H.L.; Chen, M.

doi:10.1016/j.jmatprotec.2008.10.025

Cited by 17 publications

(8 citation statements)

References 13 publications

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“…This value was also much superior to other toughened structural ceramics and Ti(CN)-based cermets developed in recent years. [33][34][35][36][37] Fig . 4 shows the SEM/BSE micrographs of (Ti 0.6 W 0.4 )C and (Ti 0.6 W 0.4 )(CN) listed in Table 3.…”

Section: Effect Of Wc Morphology On the Mechanical Propertiesmentioning

confidence: 99%

WC-reinforced (Ti,W)(CN)

Kang

2010

Journal of the European Ceramic Society

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Section: Effect Of Wc Morphology On the Mechanical Propertiesmentioning

confidence: 99%

WC-reinforced (Ti,W)(CN)

Kang

2010

Journal of the European Ceramic Society

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“…Meanwhile, some of the nano‐TiN grains are continuously extruded by the Al 2 O 3 grains and finally covered by the Al 2 O 3 grains to form an endocrystalline structure, 20 as shown in Figure 10 by the blue arrows. In addition, as shown by the red arrows in Figure 10, these areas exhibit a rough morphology similar to that marked by the yellow arrow in Figure 9A, indicating that the surface of the grains here is covered with a layer of graphene.…”

Section: Experimental Results and Analysismentioning

confidence: 99%

Fabrication and properties of monolayer graphene reinforced Al₂O₃/TiN ceramic tool material

Tian,

Sun,

Yang

et al. 2024

Int J Applied Ceramic Tech

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Al2O3/TiN/graphene ceramic tool materials were prepared by spark plasma sintering technology and the strengthening and toughening mechanisms were studied. The influence of monolayer graphene content on the mechanical properties and microstructure of the composite material were analyzed and the strengthening and toughening mechanisms were researched. The results showed that with an addition of .5 vol.% graphene the mechanical properties of the material reached the best. The bending strength, hardness, and fracture toughness were 624 MPa, 23.24 GPa, and 6.53 MPa·m1/2, respectively. Graphene existed in the forms of few‐layer and multilayer. The toughening mechanism of few‐layer graphene was mainly graphene breaking, and that of multilayer graphene included graphene breaking and pulling‐out. Graphene could contribute to the uniform growth of grains due to the excellent electrical conductivity and the high thermal conductivity. The addition of nano‐TiN introduced many endocrystalline structures and graphene promoted this phenomenon. Micro‐TiN grains made the crack extension show a combination of transgranular fracture, intergranular fracture, crack bridging, and crack deflection, while graphene introduced weak grain interfaces and made the crack appear more branches. The layered graphene made the material fracture change from two‐dimension to three‐dimension.

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“…Adding a high hardness second phase is an important means to improve the hardness and fracture toughness of silicon nitride ceramics. The second phase, which is commonly added to the Si 3 N 4 -based composite materials, mainly includes the titanium diboride (TiB 2 ) [6], titanium carbide (TiC) [7,8], titanium nitride (TiN) [9], Ti (C 7 N 3 ) [10], silicon carbide (SiC) [11], carbon nanostructure [12], and (W, Ti)C [13], and the like. The choice of the second phase is particularly important because it has a great impact on the microstructure and properties of a Si 3 N 4 -based composite.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of Spark Plasma Sintered Si3N4/WC Ceramic Tools

et al. 2019

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Silicon nitride (Si3N4) based ceramic tools exhibit good machinability in cutting materials such as gray cast iron, ductile iron, malleable cast iron, and superalloys due to excellent high-temperature mechanical properties. In this paper, high-performance Si3N4-based ceramic tools containing tungsten carbide (WC) and cobalt (Co) were studied. Effects of the WC content and Co content on mechanical properties and a microstructure of Si3N4-based ceramic materials were analyzed. Results showed that Si3N4-based ceramic material containing 10 wt % WC and 1 wt % Co had the best comprehensive mechanical properties at a sintering temperature of 1650 °C and holding time of 6 min, achieving Vickers hardness, fracture toughness, and room temperature bending strength of 16.96 GPa, 7.26 MPa·m1/2, and 1132 MPa, respectively. The microstructure of Si3N4-based ceramic tool material is uniform without obvious abnormal growth. The Si3N4-based ceramic tool was mainly composed of α-Si3N4, β-Si3N4, and WC phases.

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Preparation and characterization of Si3N4/TiN nanocomposites ceramic tool materials

Cited by 17 publications

References 13 publications

WC-reinforced (Ti,W)(CN)

WC-reinforced (Ti,W)(CN)

Fabrication and properties of monolayer graphene reinforced Al₂O₃/TiN ceramic tool material

Microstructure and Mechanical Properties of Spark Plasma Sintered Si3N4/WC Ceramic Tools

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Preparation and characterization of Si3N4/TiN nanocomposites ceramic tool materials

Cited by 17 publications

References 13 publications

WC-reinforced (Ti,W)(CN)

WC-reinforced (Ti,W)(CN)

Fabrication and properties of monolayer graphene reinforced Al2O3/TiN ceramic tool material

Microstructure and Mechanical Properties of Spark Plasma Sintered Si3N4/WC Ceramic Tools

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Fabrication and properties of monolayer graphene reinforced Al₂O₃/TiN ceramic tool material