A kind of preparation method of lattice structure nickel-based sponge material

Abstract

The invention discloses a preparation method of a lattice structure nickel-based sponge material. The method comprises the steps that firstly, a lattice structure plastic precursor is prepared througha 3D printing method; secondly, roughening treatment is conducted on the lattice structure plastic precursor; thirdly, nickel-based alloy powder and an additive are made into slurry; fourthly, the roughened lattice structure plastic precursor is placed in the slurry and immersed, and then a nickel-based sponge material blank is obtained centrifugally; and fifthly, the nickel-based sponge materialblank is sintered, and the nickel-based sponge material is obtained. The lattice structure plastic precursor with a uniform structure is prepared through the 3D printing method and used as a framework of the nickel-based sponge material blank, the distribution uniformity of the slurry with the nickel-based alloy powder as a main component on the framework is improved, the nickel-based sponge material with pore structures is obtained, the uniformity of pores and pore ribs of the nickel-based sponge material is improved, good development of joints of the nickel-based sponge material is promoted, the performance of the nickel-based sponge material is ensured, and the service life of the nickel-based sponge material is prolonged.

Description

technical field [0001] The invention belongs to the technical field of metal foam materials, and in particular relates to a preparation method of a nickel-based sponge material with a lattice structure. Background technique [0002] There are many pores inside the metal foam, and the size, uniformity, connectivity, and closure of the pores all affect its performance. In recent years, metal foam has been widely used as sound-absorbing, shielding, shock-absorbing and impact-resistant materials. As the application environment puts forward higher and higher performance indicators for materials, higher requirements are also put forward for the preparation method of metal foam. At present, there are many methods for preparing metal foam: such as casting method, metal deposition method, powder metallurgy method, spray deposition method and so on. Although the preparation method has been gradually improved with the deepening of research work, the uniformity of the internal pores of...

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Problems solved by technology

Although the preparation method has been gradually improved with the deepening of research work, the uniformity of the internal pores of the foamed metal cannot be guaranteed at present, such as the consistency of the internal pore size of the foamed metal, the consistency of the pore wall size, and the uniformity of the joints. The degree of uniform combination at the place, these three points cannot be guaranteed in the above-mentioned preparation method

The organic foam impregnation process is an important method for preparing metal foam at present, but the polyurethane foam used in it has many shortcomings: such as poor uniformity of the internal tendons of the polyurethane foam, and lack of good compatibility with the water-based slurry. Soaking stagnation and pyrolysis process are complicated, etc.

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