SHS of copper Chevrel phase compounds

Chevrel phase (CP) compounds are a highly multifunctional class of materials but are underused due to the high energy processing required for their synthesis. Self-propagation high-temperature synthesis (SHS) is a low energy and quick alternative for synthesizing this material system. In this invest...

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Bibliographic Details
Published in:Ceramics international 2024-11, Vol.50 (22), p.47244-47252
Main Authors: Gilmore, Tessa, Pawar, Milind, Gouma, Perena
Format: Article
Language:English
Subjects:
A. powders: solid state reaction
A. Sintering
B. Microstructure-final
B. Microstructure-prefiring
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Summary:Chevrel phase (CP) compounds are a highly multifunctional class of materials but are underused due to the high energy processing required for their synthesis. Self-propagation high-temperature synthesis (SHS) is a low energy and quick alternative for synthesizing this material system. In this investigation, copper-based CPs were synthesized via SHS using either elemental or binary precursor powders. The elemental precursors produced non-stoichiometric Cu2.76Mo6S8, and consisted mainly of grown MoS2 platelets. The binary precursor, on the other hand, produced stoichiometric Cu2Mo6S8. The influences of mixing and precursor concentration are discussed as well as the reaction mechanisms operating for the elemental system and the binary system, separately. The investigation into this synthesis process aims to provide a better understanding of the Chevrel SHS mechanism to accurately control the product.
ISSN:0272-8842
DOI:10.1016/j.ceramint.2024.09.075