Hollow Co42.5Cu42.5Pb15 alloy particles and manufacturing method thereof

Abstract

The invention belongs to the field of immiscible alloy particles and particularly discloses hollow Co42.5Cu42.5Pb15 alloy particles and a manufacturing method of the hollow Co42.5Cu42.5Pb15 alloy particles. According to the method, a solidifying and forming device is adopted, through the reasonably-designed alloy composition proportion, the pressure of two vacuum chambers and the roll surface linear speed of a Cu roll, the hollow Co42.5Cu42.5Pb15 alloy particles are obtained. According to the obtained hollow Co42.5Cu42.5Pb15 alloy particles, the sphericity is high, the surface is smooth, the surface layers of the particles are free of cracks or gaps, a solidifying reaction is only generated in the particles, phase precipitation is simple, the operation process is simple, and the cost is low.

Description

technical field [0001] The invention belongs to the field of immiscible alloy particles, in particular to a hollow Co 42.5 Cu 42.5 Pb 15 Alloy particle and its preparation method. Background technique [0002] As a common industrial raw material, metal alloy particles have been widely used in high-tech fields such as automobiles, metallurgy, electronics, aerospace, and medicine. Especially the alloy particles with internal hollow, which are fine powders suspended and melted in high-temperature airflow or melts atomized in high-pressure airflow, due to their own surface tension, they will condense to form fine, hollow particle structures. Due to the hollow structure, hollow particles have many unique properties, such as large specific surface area, low density, strong surface permeability, good stability, thermal insulation, light scattering, etc., in physics, chemistry, biology, aerospace, materials, etc. Both scientific and optoelectronic fields have important applicati...

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Problems solved by technology

Among them, the surface electroless plating method has simple equipment, convenient operation, and good coating effect, but two steps of sensitization and activation are required before electroless plating, so that a certain catalytic active center is formed on the surface of the hollow particles before electroless plating, and its phase composition and The process is relatively complicated; the equipment of the microemulsion method is simple, and hollow particles of nanometer to micron scale can be prepared, but the preparation process requires a reaction template, the process is relatively complicated, and the surface of the prepared hollow particle spherical shell contains mesopores that are not closed ; The template-interface reaction method is simple to operate, and the thickness of the particle shell is controllable, but its chemical reaction is very violent and dangerous, and its preparation process also requires a reaction template; the preparation process of the layer-by-layer self-assembly method is simple, and the prepared hollow particles The film has good mechanical and chemical stability, and its composition and thickness can be controlled, but the phase composition is complex and the production cost is high

The above status shows that the current preparation methods of hollow alloy particles still have great limitations, and the preparation technology of hollow particles has a bottleneck

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