Effect of nano-metal particles on the fracture toughness of metal–ceramic composite

Liu, Yingguang; Zhou, Jianqiu; Shen, Tongde

doi:10.1016/j.matdes.2012.08.065

Cited by 43 publications

(8 citation statements)

References 44 publications

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“…The stresses are compressive in the matrix and increase with increase in the size of metal particles and the stresses are tensile in the particles and decrease with increase in the particle size. When the median radial crack encounters spherical metal particles, the crack front will first stably penetrate between the particles and after the critical penetration depth is reached, overcomes the trapping effect [37]. Fig.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Effect of heat treatment on optical, dielectric and mechanical properties of silver nanoparticle embedded CaO CaF2P2O5 glass

Rao

Shashikala

2015

Journal of Alloys and Compounds

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Section: Mechanical Propertiesmentioning

confidence: 99%

Effect of heat treatment on optical, dielectric and mechanical properties of silver nanoparticle embedded CaO CaF2P2O5 glass

Rao

Shashikala

2015

Journal of Alloys and Compounds

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“…In the hexagonal preform, the maximum distance the molten metal penetrates the preform is the same regardless of the direction. The hexagonal preform improves the uniformity of molten metal penetration and reduces the stress concentration 16,17 .…”

Section: Introductionmentioning

confidence: 99%

Numerical optimization for the geometrical configuration of ceramics perform in ZTAP/HCCI wear resistant composites based on actual particle model

Zhang

et al. 2021

Preprint

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In order to reduce the thermal stress in high chromium cast iron (HCCI) matrix composites reinforced by zirconia toughened alumina (ZTA) ceramic particles, finite element simulation is performed to optimize the geometrical configuration of ceramics perform. The previous model simplifies the overall structure of the ceramic particle preform and adds boundary conditions to simulate the particles, which will cause uncontrollable error in the results. In this work, the equivalent grain models are used to describe the actual preform, making the simulation results closer to the actual experimental results. The solidification process of composite material is simulated and the infiltration between molten iron and ceramic particles was realized. Thermal stress in solidification process and compression stress distribution are obtained. The results show that adding 10mm round holes on the preform can improve the performance of the composite, which is helpful to prevent the cracks and increases the plasticity of the material.

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“…Until now, many studies have been striving to explore ways to perfect the mechanical properties of Al 2 O 3 -based ceramics. Some methods have been proposed, such as whisker toughening, phase transformation, the particle dispersion, and synergistic effects by various reinforcing mechanisms [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Reinforcing Mechanisms of Graphene and Nano-TiC in Al2O3-Based Ceramic-Tool Materials

et al. 2020

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Graphene and nano-TiC, which have good reinforcing effects on Al2O3-based ceramic-tool materials, are generally used as additive phases for ceramics. In this study, nine kinds of samples were sintered, to investigate the effects of graphene and nano-TiC on the reinforcing mechanisms of Al2O3-based ceramics. The experimental results indicated that adding 0.5 vol% graphene and 10 vol% nano-TiC can obtain the optimum flexural strength, fracture toughness, and Vickers hardness, which were 705 ± 44 MPa, 7.4 ± 0.4 MPa m1/2, and 20.5 ± 0.8 GPa, respectively. Furthermore, the reinforcing mechanisms of crack bridging, pull-out of graphene, and pull-out of nano-TiC are identified, which are contributed to improving the mechanical properties of ceramics. Meanwhile, other reinforcing mechanisms induced by graphene (graphene break, crack guiding, and 3D propagation) and nano-TiC (crack branching, crack deflection, and peeling) are discussed. These reinforcing mechanisms are coupled together, while decoupling is hard to work out. Thus, further quantitative studies of reinforcing effects of graphene and nano-TiC on Al2O3-based ceramic-tool materials are necessary to be carried out.

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Effect of nano-metal particles on the fracture toughness of metal–ceramic composite

Cited by 43 publications

References 44 publications

Effect of heat treatment on optical, dielectric and mechanical properties of silver nanoparticle embedded CaO CaF2P2O5 glass

Effect of heat treatment on optical, dielectric and mechanical properties of silver nanoparticle embedded CaO CaF2P2O5 glass

Numerical optimization for the geometrical configuration of ceramics perform in ZTAP/HCCI wear resistant composites based on actual particle model

Reinforcing Mechanisms of Graphene and Nano-TiC in Al2O3-Based Ceramic-Tool Materials

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