Preparation method of zinc-aluminum alloy foam
A zinc-aluminum alloy and foam technology is applied in the field of preparation of a zinc-aluminum alloy foam, which can solve the problems affecting the performance and erosion of the aluminum alloy foam, and achieve the effects of low cost, low performance and simple preparation method.
Inactive Publication Date: 2013-05-22
熊科学
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Problems solved by technology
[0005] In order to remove the salt wrapped in the aluminum alloy foam, the package formed by the aluminum alloy is generally destroyed by pickling, but during the pickling process, a certain amount of corrosion is also produced on other parts that have not formed a package, which affects the aluminum alloy foam. performance
Method used
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Experimental program
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Embodiment Construction
[0017] The technical solutions of the present invention are described below through specific examples, and the following examples are only for illustrating the present invention rather than limiting the scope of the present invention.
[0018] Heat the zinc-aluminum alloy until it melts. In this application, the zinc-aluminum alloy can be an existing zinc-aluminum alloy, without special requirements. Adding aluminum-lanthanum or aluminum-cerium master alloy, aluminum-lanthanum or aluminum-cerium master alloy is the prior art. The amount of aluminum-lanthanum or aluminum-cerium master alloy added is to keep the mass percentage of lanthanum or cerium in the melt at 0.2-0.5%, and keep the temperature of the melt at 450-550°C;
[0019] After the industrial salt is decrystallized and crushed, the crushed particle size can be adjusted according to the porosity of the aluminum alloy foam composite to be prepared. When the porosity of the aluminum alloy foam is required to be low, the ...
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Abstract
The invention relates to a preparation method of zinc-aluminum alloy foam, which comprises the following steps: heating zinc-aluminum alloy to a molten state, and adding an aluminum-lanthanum or aluminum-cerium interalloy, wherein the addition amount of the aluminum-lanthanum or aluminum-cerium interalloy can keep the mass percent of the lanthanum or cerium in the melt at 0.2-0.5%, and the temperature of the melt is kept at 450-550 DEG C; removing crystalline water from industrial table salt, crushing, pouring into a mold, compacting, and preheating to 350-450 DEG C; inserting the mold filled with table salt particles into the zinc-aluminum alloy melt to carry out negative-pressure infiltration flow for 10-30 seconds; taking out the mold, and after the alloy solidifies, separating the table salt particles; introducing vapor carrying HCl or sulfuric acid into the obtained zinc-aluminum alloy complex for 5-10 seconds; and putting the zinc-aluminum alloy complex into a sodium hydroxide solution of which the mass concentration does not exceed 30% for 3-5 seconds, and washing with water.
Description
technical field [0001] The invention belongs to the technical field of metal materials. In particular, it relates to a preparation method of a zinc-aluminum alloy foam. Background technique [0002] Aluminum alloy foam is a light-weight structural material. It has been widely used in noise reduction, shock absorption, separation engineering, and catalyst carrier because of its low yield strength and compressive strain properties. Shielding protection and other fields. [0003] Adding rare earth elements to the aluminum alloy for foam can further refine the structure of the material, improve the strength of the material and improve the mechanical properties of the material. In addition, the addition of rare earth can eliminate the impurities of iron, aluminum and zirconia that affect the mechanical properties of aluminum. [0004] In the method for the production of zinc-aluminum foam of the prior art, what use is all the infiltration method of dehydration industrial salt, ...
Claims
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IPC IPC(8): C22C1/08
Inventor 熊科学
Owner 熊科学