Research status and prospect of high entropy alloy composite coatings
High-entropy alloy coatings can bring out the excellent comprehensive performance of high-entropy al-loy on the basis of economy and practicality,but its strengthening method is mainly solid solution strengthening,and the strengthening effect has great limitations,so it is necessary to introduce hard particles into high-entropy al-loy coatings to achieve composite enhancement,so as to obtain a high-entropy alloy composite coating with better performance.This paper reviews the main techniques for preparing high-entropy alloy composite coatings,such as laser melting technology,plasma melting technology and argon arc melting technology,and focuses on the current research status of direct addition and in-situ synthesis of hard particles to enhance high-entropy alloy composite coatings,analyzes their organization and structure,and discusses the effects of hard particles on high-entropy alloy composite coatings in terms of hardness,wear resistance,corrosion resistance and high-temperature oxidation resis-tance,respectively.Finally,the problems in the research of high-entropy alloy composite coatings are summarized.
high entropy alloycomposite coatingpreparation processhard particleperformance
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