Reactive flash sintering: Assessing the role of volume change during phase reaction

IF 5.3 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Scripta Materialia Pub Date : 2025-02-14 DOI:10.1016/j.scriptamat.2025.116601

Vikaskumar Mishra, Praful Pandey, Pranav Rai, Tamoghna Chakrabarti, Devinder Yadav

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引用次数: 0

Abstract

Reactive flash sintering (RFS) has recently emerged as a novel technique for simultaneous synthesis and densification of ceramics where phase reaction and sintering occur in a few seconds. Typically, any phase reaction is accompanied by a volume change. This work is an initial attempt to understand the influence of phase-reaction-driven volume change on densification during RFS. We carried out RFS on two systems; one showing large volume contraction (

B a O + T i O_{2} \to B a T i O_{3}

) and other showing large volume expansion (

A l_{2} O_{3} + T i O_{2} \to A l_{2} T i O_{5}

), during phase reaction. The progress of phase reaction and corresponding densification was quantitatively monitored through XRD, real-time video and density measurement of interrupted experiments. In the volume expansion system, the phase reaction contributed positively to densification. In the volume contraction system, phase reaction de-sintered the sample by generating additional pores. We show that volume change associated with phase reaction significantly influences the extent of sintering during the RFS process.

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来源期刊

Scripta Materialia 工程技术-材料科学：综合

CiteScore

11.40

自引率

5.00%

发文量

581

审稿时长

34 days

期刊介绍： Scripta Materialia is a LETTERS journal of Acta Materialia, providing a forum for the rapid publication of short communications on the relationship between the structure and the properties of inorganic materials. The emphasis is on originality rather than incremental research. Short reports on the development of materials with novel or substantially improved properties are also welcomed. Emphasis is on either the functional or mechanical behavior of metals, ceramics and semiconductors at all length scales.