A kind of preparation method of high stability copper-based electrical contact material
An electric contact material, high stability technology, applied in the direction of contacts, circuits, electric switches, etc., can solve the problems of reducing the conductive strength of materials, poor high-temperature stability of materials, and unstable contact interfaces, etc. Density, the effect of improving stability
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example 1
[0020] According to the mass ratio of 1:10, mix copper chloride and 10% aluminum nitrate solution by mass fraction, and after heating in a water bath at 45°C for 25 minutes, the mixed solution is obtained. Mix 10% sodium carbonate solution and 10% sodium hydroxide solution by mass fraction, and ultrasonically disperse to obtain a mixed lye. Add the mixed lye dropwise to the mixed solution at a volume ratio of 1:5, and control the dropping time to 10 minutes. After the addition is complete, stir and mix and place in a high-pressure reactor, crystallize at 100°C and 0.8MPa for 10 hours, centrifuge at 2500r / min and collect the lower precipitate, wash with deionized water until the washing liquid is neutral , vacuum-dried and placed in a ball mill jar, ball milled at 350r / min for 3 hours, and passed through a 200-mesh sieve to obtain an interface-modified powder; in parts by weight, weigh 70 parts of titanium, 10 parts of silicon and 10 parts of graphite to mix , mix and ball mill...
example 2
[0022] According to the mass ratio of 1:10, mix copper chloride and 10% aluminum nitrate solution by mass fraction, and after heating in a water bath at 47°C for 27 minutes, the mixed solution is obtained. Mix 10% sodium carbonate solution and 10% sodium hydroxide solution by mass fraction, and ultrasonically disperse to obtain a mixed lye. The mixed lye is added dropwise to the mixed solution at a volume ratio of 1:5, and the dropping time is controlled to be 12 minutes. After the addition is completed, stir and mix and place in a high-pressure reactor, crystallize at 104°C and 0.9MPa for 11 hours, centrifuge at 2750r / min and collect the lower precipitate, wash with deionized water until the washing liquid is neutral , vacuum-dried and placed in a ball mill jar, ball milled at 375r / min for 4 hours, and passed through a 200-mesh sieve to obtain an interface-modified powder; in parts by weight, weigh 72 parts of titanium, 12 parts of silicon and 12 parts of graphite to mix , mi...
example 3
[0024]According to the mass ratio of 1:10, mix copper chloride with the mass fraction of 10% aluminum nitrate solution, and heat it in a water bath at 50°C for 30 minutes to obtain the mixed solution. Mix 10% sodium carbonate solution and 10% sodium hydroxide solution by mass fraction, and ultrasonically disperse to obtain a mixed lye. The mixed lye is added dropwise to the mixed solution at a volume ratio of 1:5, and the dropping time is controlled to be 15 minutes. After the addition is completed, stir and mix and place in a high-pressure reactor, crystallize at 110°C and 1.0MPa for 12 hours, centrifuge at 3500r / min and collect the lower precipitate, wash with deionized water until the washing liquid is neutral , vacuum-dried and placed in a ball mill jar, ball milled at 400r / min for 5 hours, and passed through a 200-mesh sieve to obtain an interface-modified powder; in parts by weight, weigh 75 parts of titanium, 15 parts of silicon and 15 parts of graphite to mix , mix and...
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