Method for preparing nanometer porous copper
A nano-porous copper, fast technology, applied in the field of preparation of nano-porous copper, can solve problems such as difficult application, porous copper cannot form a continuous porous structure, complex process, etc., and achieve a simple and easy preparation method, which is convenient for large-scale production and application promising effect
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Embodiment 1
[0014] (1) The Mg-Cu alloy is heated to a molten state according to the ratio of 33 atomic percent Cu and the rest is Mg, and cast into an ingot. Take a small piece and melt it again, blow out the molten liquid with argon under 0.1MPa pressure, chill it on a high-speed rotating copper roller, and obtain a piece with a thickness of 20-40μm, a width of 2-5mm, and a length of 10-70mm. Alloy strip.
[0015] (2) React with 5% hydrochloric acid solution at room temperature for 0.2 hours, then heat to 90° C., and react for about 0.2 hours until no obvious bubbles are generated, then stop heating.
[0016] (3) The thin strip obtained after the reaction was repeatedly rinsed with distilled water until the chemical corrosion solution was completely washed (the rinsed distilled water was neutral in the extensive pH test paper test). Store in a vacuum box after drying. Porous copper with uniform structure can be obtained. The ligament size of the porous copper is 148±35nm.
Embodiment 2
[0018] (1) According to the ratio of 40 atomic percent Cu and Mg as the rest, the Mg-Cu alloy is heated to a molten state and cast into an ingot. Take a small piece and melt it again, blow out the molten liquid with nitrogen gas under the pressure of 0.1MPa, chill it on a high-speed rotating copper roller, and obtain an alloy with a thickness of 20-40μm, a width of 2-5mm, and a length of 20-100mm thin ribbon.
[0019] (2) React with 5% hydrochloric acid solution at room temperature for 0.3 hours, then heat to 90° C., react for about 0.2 hours, stop heating until no obvious bubbles are generated.
[0020] (3) The thin strip obtained after the reaction was repeatedly rinsed with distilled water until the chemical corrosion solution was completely washed (the rinsed distilled water was neutral in the extensive pH test paper test). Store in a vacuum box after drying. Porous copper with uniform structure can be obtained. The ligament size of the porous copper is 175±27nm.
Embodiment 3
[0022] (1) According to the ratio of 50 atomic percent Cu and Mg as the rest, the Mg-Cu alloy is heated to a molten state and cast into an ingot. Take a small piece and melt it again, blow out the molten liquid under a certain pressure with argon, and chill it on a high-speed rotating copper roller to obtain an alloy with a thickness of 30-50 μm, a width of 2-5 mm, and a length of 20-100 mm thin ribbon.
[0023] (2) React with a sulfuric acid solution with a mass fraction of 10% at room temperature for 1 hour, then heat to 90° C., and react for about 0.5 hour until no obvious bubbles are generated, then stop heating.
[0024] (3) The thin strip obtained after the reaction was repeatedly rinsed with distilled water until the chemical corrosion solution was completely washed (the rinsed distilled water was neutral in the extensive pH test paper test). Store in a vacuum box after drying. Porous copper with uniform structure can be obtained. The ligament size of the porous copp...
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