Laser sintering process of ceramic powders: The effect of particle size on the mechanical properties of sintered layers

Sofia, Daniele; Poletto, Massimo

doi:10.1016/j.addma.2018.08.012

Cited by 30 publications

(31 citation statements)

References 27 publications

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“…A detailed report on the results of the sintering procedure applied to unmixed samples of glass beads, including all nominal particle sizes included in Table 1, is reported elsewhere (Sofia et al, 2018a). An…”

Section: Resultsmentioning

confidence: 99%

Selective laser sintering of ceramic powders with bimodal particle size distribution

Sofia

Chirone

Lettieri

et al. 2018

Chemical Engineering Research and Design

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Section: Resultsmentioning

confidence: 99%

Selective laser sintering of ceramic powders with bimodal particle size distribution

Sofia

Chirone

Lettieri

et al. 2018

Chemical Engineering Research and Design

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“…It is worth-mentioning that mechanism of heat distribution and dissipation is identical to that in the SLS process (Sofia, Barletta, and Poletto 2018). However, during the SLS process high energy densities are applied to consolidate powder particles and achieve full densification.…”

Section: D Printingmentioning

confidence: 99%

Multi-material additive manufacturing of low sintering temperature Bi₂Mo₂O₉ceramics with Ag floating electrodes by selective laser burnout

Gheisari

Chamberlain

Chi-Tangyie

et al. 2020

Virtual and Physical Prototyping

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Additive manufacturing (AM) of co-fired low temperature ceramics offers a unique route for fabrication of novel 3D radio frequency (RF) and microwave communication components, embedded electronics and sensors. This paper describes the first-ever direct 3D printing of low temperature co-fired ceramics/floating electrode 3D structures. Slurry-based AM and selective laser burnout (SLB) were used to fabricate bulk dielectric, Bi 2 Mo 2 O 9 (BMO, sintering temperature = 620-650°C, ε r = 38) with silver (Ag) internal floating electrodes. A printable BMO slurry was developed and the SLB optimised to improve edge definition and burn out the binder without damaging the ceramic. The SLB increased the green strength needed for shape retention, produced crack-free parts and prevented Ag leaching into the ceramic during co-firing. The green parts were sintered after SLB in a conventional furnace at 645°C for 4 h and achieved 94.5% density, compressive strength of 4097 MPa, a relative permittivity (ε r) of 33.8 and a loss tangent (tan δ) of 0.0004 (8 GHz) for BMO. The feasibility of using SLB followed by a postprinting sintering step to create BMO/Ag 3D structures was thus demonstrated.

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“…This model was initially developed to relate material strength, in terms of isostatic tensile stress, to the van der Waals forces, however it was also successfully applied to uniaxial state of stresses [18,19]. This approach is based on several assumptions, i.e.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Development and application of a novel cake strength tester

et al. 2019

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Caking can cause many problems in industries during processing or storage of particulate materials. Caking magnitude depends on several factors, for instance temperature, consolidation stress and storage time. In this research paper, a novel force displacement and easy-to-use caking tester for measuring quantitatively cake strength as a result of elevated temperature, consolidation stress and storage time is introduced. The developed tester outweighed the conventional uniaxial unconfined failure caking tester due to the defined location of the failure plane to maximise repeatability, the necessity for a lower quantity of powder, maximised exposed surface and lower wall friction as well as production costs. The experimental design has been conducted by changing the temperature, consolidation stress and storage duration. The results showed that the tester could distinguish cake strength between different experimental conditions. A statistical model has been successfully developed to study the effect of each variable on the cake strength.

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Laser sintering process of ceramic powders: The effect of particle size on the mechanical properties of sintered layers

Cited by 30 publications

References 27 publications

Selective laser sintering of ceramic powders with bimodal particle size distribution

Selective laser sintering of ceramic powders with bimodal particle size distribution

Multi-material additive manufacturing of low sintering temperature Bi₂Mo₂O₉ceramics with Ag floating electrodes by selective laser burnout

Development and application of a novel cake strength tester

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Laser sintering process of ceramic powders: The effect of particle size on the mechanical properties of sintered layers

Cited by 30 publications

References 27 publications

Selective laser sintering of ceramic powders with bimodal particle size distribution

Selective laser sintering of ceramic powders with bimodal particle size distribution

Multi-material additive manufacturing of low sintering temperature Bi2Mo2O9ceramics with Ag floating electrodes by selective laser burnout

Development and application of a novel cake strength tester

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Product

Resources

About

Multi-material additive manufacturing of low sintering temperature Bi₂Mo₂O₉ceramics with Ag floating electrodes by selective laser burnout