Microstructure and mechanical properties of zirconia ceramics consolidated by a novel oscillatory pressure sintering

Li, Shuang; Xie, Zhihui; Xue, Weimin

doi:10.1016/j.ceramint.2015.04.026

Cited by 26 publications

(5 citation statements)

References 26 publications

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“…From the above, this paper proves for the first time that the improvements in densification and mechanical properties exhibited by HOP-prepared materials are due to the plastic deformation produced by the oscillatory pressure, as speculated by the literatures [ 25 , 26 , 35 ].…”

Section: Discussionsupporting

confidence: 68%

“…HOP can enhance densification, inhibit grain growth, and improve mechanical properties of these materials. Several possible mechanisms were speculated to explain such improvements, including that the oscillatory pressure of HOP can promote particle rearrangement, enhance the sliding of grain boundary, and generate plastic deformation [ 25 , 26 , 27 ], though there is little experimental evidence about these mechanisms.…”

Section: Introductionmentioning

confidence: 99%

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Hot Oscillatory Pressing of Carbon Nanotube-Reinforced Copper Matrix Nanocomposite

Han

Ding

et al. 2021

Nanomaterials

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Carbon nanotube reinforced copper matrix nanocomposites have great potential in machinery, microelectronics, and other applications. The materials are usually prepared by powder metallurgy processes, in which consolidation is a key step for high performance. To improve the density and mechanical properties, the authors explored the use of hot oscillatory pressing (HOP) to prepare this material. A carbon nanotube reinforced copper matrix nanocomposite was synthesized by both HOP and hot pressing (HP) at various temperatures, respectively. The samples prepared by HOP exhibited significantly higher density and hardness than those prepared by HP at the same temperature, and this was because the oscillatory pressure of HOP produced remarkable plastic deformation in copper matrix during sintering. With the decrease of sintering temperature in HOP, the amount of deformation defect increased gradually, playing a key role in the increasing hardness. This work proves experimentally for the first time that HOP can produce much more plastic deformation than HP to promote densification, and that HOP could be a very promising technique for preparing high-performance carbon nanotube reinforced copper matrix nanocomposites.

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Section: Discussionsupporting

confidence: 68%

Section: Introductionmentioning

confidence: 99%

Hot Oscillatory Pressing of Carbon Nanotube-Reinforced Copper Matrix Nanocomposite

Han

Ding

et al. 2021

Nanomaterials

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“…In recent years, Xie et al [16] proposed an advanced sintering technique called hot oscillating pressing (HOP), which had been applied to a variety of materials with uniform organization, high-density and excellent properties at lower temperatures. Such as ceramics, metals, and composites [17][18][19][20][21][22][23] . At present, high-entropy alloys have been successfully prepared by this technique [24] , indicating its promising application for the preparation of high-entropy alloy composites.…”

Section: Introductionmentioning

confidence: 99%

Hot oscillating pressing sintered AlCoCrFeNi/nanodiamond high-entropy alloy composites

Gao,

Wu,

Ren

et al. 2023

Preprint

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In this work, AlCoCrFeNi/nanodiamond high-entropy alloy composites (HEA/diamond) were prepared for the first time by hot oscillating pressing (HOP) using nanodiamond as the reinforcing phase, and the evolution of microstructure and properties at different sintering temperatures were investigated. The microstructures of the HOPed HEA/diamond high-entropy alloy composites all consisted of the FCC phase, BCC phase and nanocarbide phase uniformly distributed in the interstices of the particles. With the increase in sintering temperature, the original powder particle boundaries in the composites gradually disappeared, the density progressively increased, and the microstructure defects decreased. At 1100°C, the dense density of the material reached its maximum, 99.7%. Moreover, the FCC phase volume fraction and carbide content further increased without significant microstructure coarsening. The hardness and corrosion resistance of the HOPed samples were better than the hot pressing (HP) samples at the same sintering temperature. Especially at lower sintering temperatures (1000°C and below), the microstructure uniformity of the composite material was significantly improved because the original particle boundaries and pores became smaller, and a small number of nanocarbides were uniformly distributed in the powder interstices. The performance of HEA/diamond was greatly enhanced by the carbide pinned reinforcement. The hardness reached a maximum of 566.48 HV1, and the corrosion current density and corrosion rate reached a minimum of 2.916 µm/cm2 and 0.013 mm/year, respectively, which was better than other alloys reported. However, at high temperatures (at 1100°C), the performance decreased due to a large amount of graphitization of diamond to generate carbides, which weakened the interfacial bonding. The results showed that high-density, high-performance HEA/diamond composites could be obtained by HOP at appropriate sintering temperatures.

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“…Low cost, nonexistence of harmful residues and ease of operation distinguished adsorption method among various water treatment ones [7][8][9][10][11][12][13]. ZrO 2 has attracted considerable attention due to its usage in industrial and medical applications such as fire-and heat-resistant material, wide band-gap semiconductor material, catalyst, solid oxide fuel cell , oxygen sensors, dental and body implants and ceramic biomaterial owing to its remarkable physical properties, such as high melting point, high strength, good toughness, corrosion resistance and low thermal conductivity [14][15][16][17]. The principle target of this work is the removal of crystal violet from industrial wastewater streams using ZrO 2 nanoparticles before entering the environment.…”

Section: Introductionmentioning

confidence: 99%

Auto-combustion synthesis and characterization of zirconium oxide nanoparticles for removal of crystal violet dye from aqueous solution

Fahmy

Shama

El-Sharkawy

et al. 2022

Benha Journal of Applied Sciences

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In the present work, zirconium oxide nanoparticles were synthesized via auto-combustion method using urea. Fourier transform infrared spectroscopy (FTIR), X-Ray diffractometry (XRD), High resolution transmission electron microscopy (HR-TEM) as well as Field emission scanning electron microscopy (FE-SEM) were used to elucidate the structure and morphology of the synthesized zirconium oxide nanoparticles. The synthesized ZrO 2 nanoadsorbents were used for crystal violet removal from aqueous solution. Various parameters were checked in a batch method for the adsorption process of crystal violet dye on zirconium oxide adsorbents such as pH solution, duration time, ZrO 2 dose (adsorbents), initial dye concentration as well as temperature. The adsorption kinetics, isotherm models and thermodynamic parameters were discussed.

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Microstructure and mechanical properties of zirconia ceramics consolidated by a novel oscillatory pressure sintering

Cited by 26 publications

References 26 publications

Hot Oscillatory Pressing of Carbon Nanotube-Reinforced Copper Matrix Nanocomposite

Hot Oscillatory Pressing of Carbon Nanotube-Reinforced Copper Matrix Nanocomposite

Hot oscillating pressing sintered AlCoCrFeNi/nanodiamond high-entropy alloy composites

Auto-combustion synthesis and characterization of zirconium oxide nanoparticles for removal of crystal violet dye from aqueous solution

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