The influence of Al content on pore structures of porous Mo<sub>2</sub>TiAlC<sub>2</sub> ceramics through powder metallurgy technique

Yang, Junsheng; Wen, Yongfu; Li, Xide; Fan, Yiquan; Zou, Haoran; Zhang, Chuo; Xiong, Lieqiang; Liu, Yuzuo

doi:10.1080/21870764.2021.2018776

Cited by 3 publications

(1 citation statement)

References 29 publications

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“…In the previous study, porous Mo 2 TiAlC 2 ceramics were prepared by activation reaction sintering method, and the effect of Al content on pore structures was also investigated [ 24 ]. Given the excellent performance of Mo 2 TiAlC 2 in oxidation resistance and other aspects, the introduction of porous structure allows for not only exploring the formation process of Mo 2 TiAlC 2 from the perspective of phase transition but also observing this process from the perspective of pore structure.…”

Section: Introductionmentioning

confidence: 99%

Impact of Sintering Temperature Variation on Porous Structure of Mo2TiAlC2 Ceramics

Yang,

Fan,

Tan

et al. 2023

Materials

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Mo, TiH2, Al and graphite elemental powders were used as starting materials for the activation reaction sintering process, which was employed to fabricate porous Mo2TiAlC2. The alteration of phase constitution, volume expansion, porosity, pore size and surface morphology of porous Mo2TiAlC2 with sintering temperatures ranging from 700 °C to 1500 °C were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and pore size tester. Both the pore formation mechanism and activation reaction process at each temperature stage were investigated. The experimental results illustrate that the sintered discs of porous Mo2TiAlC2 exhibit obvious volume expansion and pore structure change during the sintering process. Before 1300 °C, the volume expansion rate and porosity increase with the increment of temperature. However, with the sintering temperature above 1300 °C, the volume expansion rate and porosity decrease. At the final sintering temperature of 1500 °C, porous Mo2TiAlC2 with a volume expansion rate of 35.74%, overall porosity of 47.1%, and uniform pore structure was synthesized. The pore-forming mechanism of porous Mo2TiAlC2 is discussed, and the evolution of pressed pores, the removal of molding agents, the decomposition of TiH2, and the Kirkendall effect caused by different diffusion rates of elements in the diffusion reaction are all accountable for the formation of pores.

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Section: Introductionmentioning

confidence: 99%

Impact of Sintering Temperature Variation on Porous Structure of Mo2TiAlC2 Ceramics

Yang,

Fan,

Tan

et al. 2023

Materials

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First-principles investigation of the structural stability and mechanical properties of TM3Al2C(TM=Mo, Cr and W) carbides

Pan

2023

Materials Today Communications

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Composite MAX phase/MXene/Ni electrodes with a porous 3D structure for hydrogen evolution and energy storage application

Sergiienko,

Lajaunie,

Rodríguez-Castellón

et al. 2024

RSC Adv.

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The influence of Al content on pore structures of porous Mo₂TiAlC₂ ceramics through powder metallurgy technique

Cited by 3 publications

References 29 publications

Impact of Sintering Temperature Variation on Porous Structure of Mo2TiAlC2 Ceramics

Impact of Sintering Temperature Variation on Porous Structure of Mo2TiAlC2 Ceramics

First-principles investigation of the structural stability and mechanical properties of TM3Al2C(TM=Mo, Cr and W) carbides

Composite MAX phase/MXene/Ni electrodes with a porous 3D structure for hydrogen evolution and energy storage application

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The influence of Al content on pore structures of porous Mo2TiAlC2 ceramics through powder metallurgy technique

Cited by 3 publications

References 29 publications

Impact of Sintering Temperature Variation on Porous Structure of Mo2TiAlC2 Ceramics

Impact of Sintering Temperature Variation on Porous Structure of Mo2TiAlC2 Ceramics

First-principles investigation of the structural stability and mechanical properties of TM3Al2C(TM=Mo, Cr and W) carbides

Composite MAX phase/MXene/Ni electrodes with a porous 3D structure for hydrogen evolution and energy storage application

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The influence of Al content on pore structures of porous Mo₂TiAlC₂ ceramics through powder metallurgy technique