Year: 2025
Type: article
Abstract: This study aims to evaluate the properties of High Entropy Alloy (HEA)-ceramic composites produced with spark plasma sintering (SPS) technique. HEAs are alloys consisting of five or more principal elements. They possess excellent mechanical, thermal, wear and corrosion properties as a result of their configurational characteristic effects. However, these properties usually attenuate at elevated temperatures. So, incorporating ceramic reinforcements enhances those unique properties at elevated thermal and mechanical stresses. SPS, a non-conventional sintering technique, offers unique properties to composite materials more than the conventional techniques. It prevents grain growth and evolution of deleterious intermetallic compounds and promotes rapid densification with strong interfacial bonding. The study systematically reviews HEA-ceramic composites developed with SPS, their properties, strengthening mechanisms, and property tailoring strategies. It also analyses how SPS parameters impact on the properties of the composites. Results show that SPS is a sustainable consolidation method, which can produce HEA-ceramic composites with superior properties suitable for demanding applications in energy, aerospace and biomedical sectors. The review highlights the novelty of incorporating ceramics into HEAs using SPS technique. It concludes by recommending optimization of material design and development strategies for next-generation robust materials.
Authors: Chika Oliver Ujah, Peter Apata Olubambi
Institution: University of Johannesburg
Language: English
Topic: High Entropy Alloys Studies
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
Funder: University of Johannesburg
OpenAlex ID: W7111063149
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