Journal Article

PUBDB-2025-04775

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png 3D reconstruction and corrosion resistance of porous Zr-Al intermetallic via thermally-regulated rapid self-exothermic reaction

Guo, W. (Corresponding author)Extern* ; Pang, Z. ; Cai, X. (Corresponding author) ; Xie, C. ; Zhang, B. (Corresponding author) ; Akhtar, F.Extern* ; Feng, P. (Corresponding author)

2025
Elsevier Lausanne

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Please use a persistent id in citations: doi:10.1016/j.jallcom.2025.183300

Abstract: For environmental management purposes, industrial alkaline waste streams are essential to be filtered effectively. Here, porous Zr-Al intermetallic compounds were prepared using a rapid self-exothermic reaction with a preventative holding treatment. The pre-heating treatment for thermal-adjustment accelerates the solid-state diffusion kinetics and reduces the heat released by the thermal explosion reaction (TE). The porous Zr-Al compounds were structurally reconstructed using the 3D X-ray microscopy (3D-XRM) technique, through which the porosity, pore connectivity, and permeability properties were semi-quantitatively analyzed in conjunction with the reconstructed model. In-situ high-temperature synchrotron X-ray diffraction (HT-SXRD) was employed to reveal the phase constitution evolution as a function of temperature, underpinning the effectiveness of the pre-heating treatment and revealing the formation of thermo-dynamically stable intermetallic phases. The complete reaction between Zr and Al is facilitated by the pre-heating treatment, producing a homogeneous pore-skeleton structure and inhibiting microcrack formation with superior connectivity and permeability properties. Consequently, optimal sample 570/700 shows excellent filtering properties due to the uniformly distributed and inter-connected pores. The superior corrosion resistance further evidences the expedited passivation film formation, combining with the homogeneous pore structure and stable intermetallic composition, which altogether improves substrate protection and mitigates electrochemical degradation processes. The structure-function integrated porous Zr-Al provides a meaningful path and shows the potential for filtration applications of industrial wastewater/gas.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
2. FS-Proposal: I-20240759 (I-20240759) (I-20240759)
3. FS-Proposal: I-20240761 (I-20240761) (I-20240761)
4. SWEDEN-DESY - SWEDEN-DESY Collaboration (2020_Join2-SWEDEN-DESY) (2020_Join2-SWEDEN-DESY)

Experiment(s):

1. PETRA Beamline P21.1 (PETRA III)

Appears in the scientific report 2025

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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