3D microstructure construction and quantitative evaluation of sintered ZrO2 under different sintering conditions

Xia, Zhenbo; Chen, Bin; Lu, Kathy

doi:10.1007/s10853-013-7381-y

Cited by 7 publications

(4 citation statements)

References 40 publications

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“…Machio et al [23] performed EBSD measurements of the phase composition, crystal structures, and grain orientations of sintered Ti based alloys. Finally, Xia et al, [24] on the basis of a series of 2D EBSD images, reconstructed the 3D structure with grain-pore interfaces, pore connectivity, and tortuosity.…”

Section: Introductionmentioning

confidence: 99%

Combined EBSD and Computer-Assisted Quantitative Analysis of the Impact of Spark Plasma Sintering Parameters on the Structure of Porous Materials

Nosewicz

Jurczak

Chromiński

et al. 2022

Metall Mater Trans A

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The paper presents the experimental, numerical, and theoretical investigation of the microstructure of nickel aluminide samples manufactured by spark plasma sintering using electron backscatter diffraction and computer assisted software. The aim of the work was to reveal the evolution of the microscopic and macroscopic parameters related to the microstructure of the material and its dependence on the applied sintering parameters—temperature and pressure. The studied porous samples with different relative density were extracted from various planes and then tested by electron backscatter diffraction to evaluate the crystallographic orientation in every spot of the investigated area. On this foundation, the grain structure of the samples was determined and carefully described in terms of the grain size, shape and boundary contact features. Several parameters reflecting the grain morphology were introduced. The application of the electric current resulting in high temperature and the additional external loading leads to the significant changes in the structure of the porous sample, such as the occurrence of lattice reorientation resulting in grain growth, increase in the grain neighbours, or the evolution of grain ellipticity, circularity, grain boundary length, and fraction. Furthermore, the numerical simulation of heat conduction via a finite element framework was performed in order to analyse the connectivity of the structures. The numerical results related to the thermal properties at the micro- and macroscopic scale—local heat fluxes, deviation angles, and effective thermal conductivity—were evaluated and studied in the context of the microstructural porosity. Finally, the effective thermal conductivity of two-dimensional EBSD maps was compared with those obtained from finite element simulations of three-dimensional micro-CT structures. The relationship between the 2D and 3D results was derived by using the analytical Landauer model.

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Section: Introductionmentioning

confidence: 99%

Combined EBSD and Computer-Assisted Quantitative Analysis of the Impact of Spark Plasma Sintering Parameters on the Structure of Porous Materials

Nosewicz

Jurczak

Chromiński

et al. 2022

Metall Mater Trans A

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“…Several papers described application of FIB-SEM technique to analysis of porous zirconia and its composites [8][9][10][11][12]. Xia et al [12] investigated morphology of pores in a batch of zirconia samples based on BSE images impregnating the samples with resin to enhance BSE contrast in purpose to recognize pores. Experimental data were used for calculations of microstructural parameters such as the number of pores, pore-grain interfacial area, connectivity and tortuosity.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional analysis by serial sectioning of cubic zirconia sinters

Bobrowski¹,

Faryna²,

Pędzich³

2015

AIP Conference Proceedings

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Abstract. Three-dimensional electron backscatter diffraction technique was used for the characterization of grain boundary geometry and pore morphology in cubic zirconia. A set of three samples composed of cubic yttria stabilized zirconia, sintered under different conditions was investigated. Analysis of grain boundaries and pore structure was carried out in a dual-beam scanning electron microscope. For each sample, a volume of 15•10 3 μm 3 was investigated. The results of three-dimensional microstructure analysis were compared to the results derived from regular, two-dimensional maps of the area of 2500 μm 2 . Based on two-dimensional and three-dimensional data the average grain diameter, number of grains, average number of neighbors and porosity were calculated. The average grain diameter varied in the range from 2.39 μm to 2.91 μm and from 3.00 μm to 3.79 μm, while the level of porosity varied in the range from 1.22% to 1.77% and from 1.30% to 5.61% for two-dimensional and three-dimensional data, respectively. The analysis of grain boundary networks revealed a strong dependence between grain boundary density and sample preparation parameters. The parameters of the sintering process affected also the size and distribution of pores. The comparison of the results of 2D and 3D materials characterization revealed significant differences in the values of calculated microstructure parameters.

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“…Recently, focused ion beam cutting/scanning electron imaging (FIB‐SEM) showed that pores evolve very differently from conventional understanding . Utilizing the 3D FIB‐SEM reconstruction method, a variety of sintering parameters have been quantified, such as pore volume, pore‐grain interfacial area, and tortuosity . It has been revealed that pores are tortuous up to very high densities.…”

Section: Introductionmentioning

confidence: 99%

“…[23][24][25][26] Utilizing the 3D FIB-SEM reconstruction method, a variety of sintering parameters have been quantified, such as pore volume, pore-grain interfacial area, and tortuosity. 27,28 It has been revealed that pores are tortuous up to very high densities. Because of this, pores need to be reexamined to accurately describe the microstructure evolution process during sintering.…”

Section: Introductionmentioning

confidence: 99%

Evolution of Pores and Tortuosity During Sintering

2014

J. Am. Ceram. Soc.

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Pores play an important role in sintering densification. In this study, 3D microstructure reconstruction has been used to quantitatively evaluate pore evolution during sintering. Pore shape, distribution, and connectivity are displayed in 3D based on actual microstructure data and show drastic differences from the conventional description of pores. Pore volume fraction and pore number density are extracted from the 3D microstructure reconstruction and compared. Pore size distribution frequency with sintering time is obtained. New tortuosity concept is provided to properly represent pore shape changes during sintering.

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3D microstructure construction and quantitative evaluation of sintered ZrO2 under different sintering conditions

Cited by 7 publications

References 40 publications

Combined EBSD and Computer-Assisted Quantitative Analysis of the Impact of Spark Plasma Sintering Parameters on the Structure of Porous Materials

Combined EBSD and Computer-Assisted Quantitative Analysis of the Impact of Spark Plasma Sintering Parameters on the Structure of Porous Materials

Three-dimensional analysis by serial sectioning of cubic zirconia sinters

Evolution of Pores and Tortuosity During Sintering

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