Activation energies of oxidation in air for SPS-sintered zirconium and its alloys

IF 4.4 3区工程技术 Q1 ENGINEERING, CIVIL

Archives of Civil and Mechanical Engineering Pub Date : 2025-01-28 DOI:10.1007/s43452-025-01126-5

Radoslaw Wnuk, Pavel Novak, Michal Stępień, Lucyna Jaworska, Ivo Marek, Piotr Noga, Tomasz Skrzekut, Stanisław Małecki

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引用次数: 0

Abstract

The research concerns the oxidation process of SPS-sintered zirconium-based materials. The sintered materials are characterized by residual porosity, which can affect the intensification of the oxidation process, compared to melted materials. On the basis of TGA tests carried out at temperatures of 500, 600, 700, and 800 °C, activation energies in air of sintered Zr, Zr–2.5Cu, Zr–2.5Nb, and Zr–2.5Mn, respectively, were calculated. Based on the studies of the microstructure and phase composition of oxidized materials, degradation mechanisms were analyzed for materials after annealing at 700 °C. In sintered Zr, Zr–2.5Cu, and Zr–2.5Nb oxidized at 700 °C, Si₃N₄ was detected. Si₃N₄ is formed at the zirconium oxide–zirconium boundary, in oxygen-deficient conditions. Zr–2.5Cu demonstrated the lowest tendency to oxidize despite the low values of activation energy for the oxidation process in air of 61 kJ/mol. This material showed the highest resistance to oxidation in air.

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来源期刊

Archives of Civil and Mechanical Engineering 工程技术-材料科学：综合

CiteScore

6.80

自引率

9.10%

发文量

201

审稿时长

4 months

期刊介绍： Archives of Civil and Mechanical Engineering (ACME) publishes both theoretical and experimental original research articles which explore or exploit new ideas and techniques in three main areas: structural engineering, mechanics of materials and materials science. The aim of the journal is to advance science related to structural engineering focusing on structures, machines and mechanical systems. The journal also promotes advancement in the area of mechanics of materials, by publishing most recent findings in elasticity, plasticity, rheology, fatigue and fracture mechanics. The third area the journal is concentrating on is materials science, with emphasis on metals, composites, etc., their structures and properties as well as methods of evaluation. In addition to research papers, the Editorial Board welcomes state-of-the-art reviews on specialized topics. All such articles have to be sent to the Editor-in-Chief before submission for pre-submission review process. Only articles approved by the Editor-in-Chief in pre-submission process can be submitted to the journal for further processing. Approval in pre-submission stage doesn''t guarantee acceptance for publication as all papers are subject to a regular referee procedure.