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28
2021
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09
What are the characteristics of copper-based powder metallurgy?
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Copper-based powder metallurgy It is a manufacturing technology that produces metal powders or uses metal powders as raw materials, followed by forming and sintering, to create metallic materials, composite materials, and a wide variety of products. Powder metallurgy shares similarities with ceramic production, as both fall under the umbrella of powder sintering techniques; consequently, many new powder metallurgy technologies can also be applied to the fabrication of ceramic materials. Owing to the advantages of copper-based powder metallurgy, it has become a key approach for addressing challenges in new materials and plays an important role in their development.
Copper-based powder metallurgy encompasses both powders and finished products. The powders are primarily the result of metallurgical processes, which is reflected in the term itself. However, powder‑metallurgy products often extend far beyond the realms of materials science and metallurgy, embodying multidisciplinary technologies that span materials and metallurgy, mechanical engineering, and mechanics, among others. In particular, modern metal‑powder additive manufacturing integrates mechanical engineering, CAD, reverse‑engineering, layered manufacturing, numerical control, materials science, and laser technology, transforming powder‑metallurgy product development into a cutting‑edge, cross‑disciplinary, holistic technological field.
What are the characteristics of copper-based powder metallurgy?
Copper-based powder metallurgy possesses a unique chemical composition and distinctive mechanical and physical properties that cannot be achieved through conventional casting methods. By employing powder metallurgy, it is possible to directly produce porous, semi‑dense, or fully dense materials and components—such as planetary bearings, gears, cams, guide rails, and cutting tools—making it a near‑net‑shape manufacturing technique.
(1) Copper-based powder metallurgy technology can reduce compositional segregation in alloys and eliminate coarse, non-uniform cast microstructures. It plays a crucial role in the preparation of high-performance rare-earth permanent magnetic materials, rare-earth hydrogen storage materials, rare-earth luminescent materials, rare-earth catalysts, high-temperature superconducting materials, and novel metallic materials (such as Al–Li alloys, heat-resistant Al alloys, high-temperature alloys, powder‑metallurgy corrosion‑resistant stainless steels, powder‑metallurgy high-speed steels, and intermetallic compound high‑temperature structural materials).
(2) Copper-based powder metallurgy can be used to fabricate a series of high-performance, non-equilibrium materials exhibiting superior electrical, magnetic, optical, and mechanical properties, including amorphous, microcrystalline, quasicrystalline, nanocrystalline, and supersaturated solid-solution phases.
(3) Copper-based powder metallurgy can readily produce a wide variety of composite materials, fully leveraging the unique properties of each constituent material, and serves as a cost-effective process for manufacturing high-performance metal‑matrix and ceramic‑matrix composites.
(4) It can produce novel porous biomaterials, porous separation membrane materials, high-performance structural ceramic abrasives, functional ceramic materials, and other materials and products with unique structures and properties that cannot be manufactured by conventional metallurgical processes.
(5) It can be readily automated and mass-produced, effectively reducing resource and energy consumption in manufacturing.
(6) New technologies for recycling ores, tailings, steelmaking sludge, mill scale, and scrap metals as raw materials.
Most of the machining tools and metal grinding machines we commonly see are Copper-based powder metallurgy Technologically manufactured.
Copper-based powder metallurgy
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