The effect of sintering temperature on the porosity and compressive strength of corundum

Bendaoudi, Seif-Eddine; Bounazef, Mokhtar; Djeffal, Ali

doi:10.1515/jmbm-2018-0018

Cited by 3 publications

(2 citation statements)

References 8 publications

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“…It is worthy to mention that the mean pore diameter of porous Ni 50 SH 50 foam should be increased due more evaporation of space holding materials. However, similar phenomenon observed for other ceramic materials which can be ascribed to the densification of the body promoting partial removal of porosity at high temperatures [34,35]. 6(d)).…”

Section: Characterization Of Porous Ni-nio Foamsupporting

confidence: 75%

Fabrication of Ni-NiO Foams by Powder Metallurgy Technique and Study of Bulk Crushing Strength

Sarker

Rahman

et al. 2021

Trends Sci

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Despite the importance of Nickel Oxide (NiO) in diverse functional applications, very little information is available on the mechanical properties of bulk or porous NiO or, mostly unnoticed. In this study, porous Ni-NiO foam was synthesized using space holding-powder metallurgy and sintering methods to produce opened-cell structure with macrogravel and Neolamarckia cadamba (Cadamba flower) like surface morphology. Four different types of porous Ni-NiO with different pore diameter of 35.65 ± 12.77, 36.10 ± 8.85, 68.20 ±7.36 and 62.45 ± 17.48 µm were fabricated for evaluating the effect of porosity on the mechanical properties of bulk porous Ni-NiO foam. The mechanical properties such as bulk crushing force of as synthesized Ni-NiO foam with various porosities such as 20.55, 27.35, 27.85 and 28.82 % exhibited the average crushing load of 115.40, 39.95, 138.10 and 151.20 N, respectively. This study suggests that crushing load of Ni-NiO foam is not only depending on the porosity but also on the sintering temperature and crystallite sizes of NiO. HIGHLIGHTS Ni-NiO foam is synthesized using space holding-powder metallurgy and sintering methods Different pore diameter is fabricated for evaluating the effect of porosity on the mechanical properties of bulk porous Ni-NiO foam Crushing strength of Ni-NiO foam is not only depending on the porosity but also on the sintering temperature and crystallite sizes of NiO GRAPHICAL ABSTRACT

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Section: Characterization Of Porous Ni-nio Foamsupporting

confidence: 75%

Fabrication of Ni-NiO Foams by Powder Metallurgy Technique and Study of Bulk Crushing Strength

Sarker

Rahman

et al. 2021

Trends Sci

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“…According to Osiptsov, 28 fracture permeability with rodshaped corundum proppants (X = 2.5249 mm) and rod-shaped bauxite proppants (X = 2.6284) were tested, respectively. It is noteworthy that d 0 = 0.9 mm, 28 l 0 = 11 mm, 28 E 1 = 40.49 GPa, 49 and υ 1 = 0.22 50 for corundum proppants, and d 0 = 1.2 mm, 28 l 0 = 4.8 mm, 28 E 1 = 107 GPa, 51 and υ 1 = 0.24 51 for bauxite proppants. To simulate the experimental conditions, we also used these parameters in our model calculation for this case.…”

Section: Calculation Results and Discussionmentioning

confidence: 93%

Rod-Shaped Proppant Conductivity of a Hydraulic Fracture Considering Elastic-Plastic Deformation and Embedment: An Analytical Model

Tang,

Kang,

Zhao

et al. 2024

Energy Fuels

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Hydraulic fracturing with a proppant is widely employed to create fracture networks and enhance the conductivity of unconventional oil and gas reservoirs. However, the proppant conductivity tends to decrease due to the increasing closure pressure and temperature during long-term production. Hence, it is of great significance to quantitatively characterize the effects of thermal expansion and mechanical behaviors of proppant deformation and embedment on hydraulic fracture conductivity. In this paper, an analytical model is proposed for revealing physical relations between rod-shaped proppant conductivity and various impacting factors, and the model is validated against available experimental data. Results show that with increasing closure pressure and temperature, the rod-shaped proppant experiences pure elastic, elastic-plastic, pure plastic deformation, and linear thermal expansion, which leads to a declining proppant conductivity. Effects of critical parameters on the proppant deformation and proppant conductivity evolution are also investigated. Specifically, the proppant conductivity shows a positive relationship with the proppant aspect ratio. It is also found that with increasing closure pressure, the proppant conductivity variation can be divided into five stages. This model provides insights into the proppant deformation, embedment, and productivity, by which suggestions can be offered to optimize the parameter design in the hydraulic fracturing process, helping to realize the efficient extraction of unconventional oil and gas reservoirs.

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Selective laser sintering of porous Al2O3-based ceramics using both Al2O3 and SiO2 poly-hollow microspheres as raw materials

Meng

Liu

et al. 2021

Ceramics International

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The effect of sintering temperature on the porosity and compressive strength of corundum

Cited by 3 publications

References 8 publications

Fabrication of Ni-NiO Foams by Powder Metallurgy Technique and Study of Bulk Crushing Strength

Fabrication of Ni-NiO Foams by Powder Metallurgy Technique and Study of Bulk Crushing Strength

Rod-Shaped Proppant Conductivity of a Hydraulic Fracture Considering Elastic-Plastic Deformation and Embedment: An Analytical Model

Selective laser sintering of porous Al2O3-based ceramics using both Al2O3 and SiO2 poly-hollow microspheres as raw materials

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