Ceramic particles for laser cladding and preparation method and application thereof

By forming a Ni-P chemical plating layer on the surface of ceramic particles, the problems of coating uniformity and thermal stability of ceramic particles in laser cladding are solved, good wettability and interfacial bonding between ceramic particles and metal substrate are achieved, and the density and wear resistance of composite coating are improved.

CN121972657BActive Publication Date: 2026-07-21JINAN UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2026-04-08
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing chemical plating processes have limitations in ensuring uniform coating and thermal stability during ceramic particle surface modification. Furthermore, they are prone to cracking and interfacial brittleness under high-temperature and high-speed melting conditions, making it difficult to meet the engineering application requirements of laser cladding.

Method used

A continuous and dense metallized coating layer is formed on the surface of ceramic particles using Ni-P chemical plating. By pretreatment, sensitization, activation and Ni-P coating layer deposition, the controllability of coating thickness and crystallinity is ensured, thereby improving the wettability and interfacial bonding between ceramic particles and the metal substrate.

Benefits of technology

It significantly improves the wettability and interfacial bonding of ceramic particles during laser cladding, reduces defects such as incomplete fusion, porosity and cracks, and enhances the density and wear resistance of composite coatings. It is suitable for various ceramic particle and metal-based powder systems.

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Abstract

The application belongs to the field of laser cladding and surface engineering, and particularly relates to a kind of ceramic particles for laser cladding and its preparation method and application. The method comprises: pretreating ceramic particles, sensitizing in a tin ion solution, activating, depositing a Ni-P coating layer, and obtaining ceramic particles for laser cladding. When used for laser cladding repair of aluminum alloy, the ceramic particles for laser cladding can significantly improve the wettability of particles-matrix and the interface metallurgical bonding, reduce the generation of non-wetting, non-fusion and porosity defects, thereby improving the density and bonding strength of the cladding layer, inhibiting the defects of agglomeration, sinking and non-fusion, and improving the coating density, microhardness, wear resistance and corrosion resistance. The method has the advantages of mild process, strong applicability, easy batch production and on-site repair promotion, and is suitable for surface strengthening and remanufacturing repair engineering of various ceramic / metal combinations.
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Citation Information

Patent Citations

  • Laser cladding ceramic particle reinforced aluminum-based cladding layer and preparation method thereof

    CN115287647A

  • Nickel-based rare earth composite powder material for high-speed laser cladding and preparation method of nickel-based rare earth composite coating

    CN121781141A