Effect of pressure on the electrical resistance flash sintering of tungsten carbide

Mazo, Isacco; Molinari, A.; Sglavo, Vincenzo M.

doi:10.1016/j.jeurceramsoc.2022.01.017

Cited by 12 publications

(18 citation statements)

References 32 publications

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“…It should be noted that Mazo et al investigated the effect of pressure on FS of WC. 20 They observed similar trend that higher pressure shortens the incubation. However, they did not observe the positive effect of higher pressure leading to higher max current, as observed in the current study.…”

Section: Effects Of Pressurementioning

confidence: 66%

Effects of processing conditions on flash sintering of commercial ZrN

Eskandariyun,

Das,

Dubois

et al. 2024

J Am Ceram Soc.

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Flash sintering (FS) is a potentially rapid and low‐cost manufacturing technique for advanced ceramics. There are still many unknowns about ceramic FS, especially for highly conductive high‐temperature ceramics (HTC), which often display decreased bulk conductivity with increasing temperature. This study qualitatively characterizes the flash behavior of highly conductive HTC materials using zirconium nitride (ZrN) as an example. The effects of processing parameters (e.g., DC voltage/electrical field strength, voltage ramp rate, post‐flash holding time, mechanical pressure, sample milling, and choice of electrode materials) on ZrN flash behavior are also qualitatively studied and linked to samples microstructure and hardness. It is observed that best densification was achieved using 5 min Spex‐milled ZrN powder under 25 MPa of applied pressure and constant 8 V DC. The potential mechanism for ZrN FS and the similarity and difference from FS of conventional oxides like YSZ have been proposed based on experimental observations, and the directions for future research are also pointed out.

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Section: Effects Of Pressurementioning

confidence: 66%

Effects of processing conditions on flash sintering of commercial ZrN

Eskandariyun,

Das,

Dubois

et al. 2024

J Am Ceram Soc.

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show abstract

“…Very recently, flash sintering has been successfully applied to conductive ceramics (like tungsten carbide) (Mazo et al, 2022a;Mazo et al, 2022b) and such results could open very interesting possibilities also in ultra-high temperature carbides and borides, which are typically difficult to densify.…”

Section: Innovative Sintering Techniquesmentioning

confidence: 99%

Grand challenges in ceramics processing

Sglavo

2023

Front. Ceram.

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“…1), where FS is simply referring to the ERFS process. The ERFS process and details on the composition and microstructure of the obtained materials have been previously reported [36][37][38]. This process consists in the application of small AC voltage (3-4 V) and large current (1000-1200 A) for a duration between 10 s and 60 s, to a powder compact thermally and electrically insulated within a zirconia die.…”

Section: Samples Preparationmentioning

confidence: 99%