一种高熵稀土掺杂WC硬质合金及其制备方法和应用
By using wet co-deposition and magnetron sputtering techniques, atomic-level dispersion of rare earth elements and uniform distribution of high-entropy rare earth nanoparticles in WC alloys were achieved, solving the problem of limited improvement in hardness and strength of rare earth-doped WC alloys and preparing high-performance WC cemented carbides.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- INSTITUTE OF MATERIALS & INTELLIGENT MANUFACTURING JIANGXI ACADEMY OF SCIENCES
- Filing Date
- 2025-09-25
- Publication Date
- 2026-07-17
AI Technical Summary
In existing rare earth-doped WC alloys, the rare earth elements are not evenly dispersed, resulting in limited improvement in hardness and mechanical properties. Therefore, the preparation method needs to be improved.
The precursor was prepared by wet co-deposition. Through steps such as calcination, reduction, carbonization and magnetron sputtering Co deposition, the atomic-level dispersion of rare earth elements and the uniform distribution of high-entropy rare earth nanoparticles in WC crystals were achieved. Combined with the core-shell structure, the hardness and strength of the alloy were improved.
The prepared high-entropy rare-earth-doped WC cemented carbide has a hardness of over 93.9 HRA and a bending strength of over 2980 MPa, which significantly improves the mechanical properties of the alloy.
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Figure CN121178840B_ABST