A study of the densification mechanisms during spark plasma sintering of zirconium (oxy-)carbide powders

Gendre, Mathieu; Maı̂tre, Alexandre; Trolliard, Gilles

doi:10.1016/j.actamat.2009.12.046

Cited by 125 publications

(49 citation statements)

References 35 publications

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“…The molten Si could increase the transport rate of materials and thereby enhance the sintering rate [24]. ZrC-SiC is sintered to dense fast at relatively low temperature [25].…”

Section: Methodsmentioning

confidence: 99%

Low temperature sintering of ZrC–SiC composite

Zhao

Jia

Duan

et al. 2011

Journal of Alloys and Compounds

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“…The molten Si could increase the transport rate of materials and thereby enhance the sintering rate [24]. ZrC-SiC is sintered to dense fast at relatively low temperature [25].…”

Section: Methodsmentioning

confidence: 99%

Low temperature sintering of ZrC–SiC composite

Zhao

Jia

Duan

et al. 2011

Journal of Alloys and Compounds

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“…There are other papers, which consider the sintering mechanism of bulk ZrC using oxycarbide ZrC x O y powders. The enhanced Zr lattice diffusion promotes the sintering behavior and improves  the densification process for these powders [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Pressureless sintering of ZrC with variable stoichiometry

2017

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This paper presents the experiments on the synthesis of zirconium carbide (ZrC) using carbothermal reduction of zirconia (ZrO 2 ). The ratio of ZrO 2 :C is used to adapt ZrC x O y with x < 1 or ZrC + C. The modification of ZrC x O y and the total carbon amount allows the use of pressureless sintering method in combination with sintering temperatures ≤ 2000 ℃. Fully densified ZrC products are obtained. The relevant details of ZrC formation are investigated by X-ray diffraction (XRD). The sintered products are characterized by XRD, field emission scanning electron microscopy (FESEM), as well as mechanical and electrical methods. XRD and FESEM investigations show that ZrC x O y is formed during the manufacturing process. The grain size and additional zirconia or carbon are related to the ZrO 2 :C ratio of the starting powder mixture. Bending strength up to 300 MPa, Young's modulus up to 400 GPa, fracture toughness up to 4.1 MPa·m 1/2 , and electrical resistance at room temperature around 10 4 Ω·cm are reached by the pressureless sintered ZrC.

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“…where ρ represents instantaneous relative density, ρ f is the final relative density, L f is the final length of sintered specimen, and L is instantaneous length [47]. Every individual experiment was repeated at least twice to ensure the reproducibility.…”

Section: Sps Treatmentmentioning

confidence: 99%