A kind of double-layer silver-based composite oxide electrical contact material and its application
A composite oxide and silver-based composite technology, applied in the direction of contact materials, etc., can solve the problems affecting the manufacturing cost of electrical contact materials, the skyrocketing price of In, and the depletion of In resources, so as to achieve consumption saving, good corrosion resistance and anti-corrosion Welding performance and the effect of improving contact performance
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Embodiment 1
[0029] The double-layer silver-based composite oxide electrical contact material A includes two layers, one of which is an AgCuZn layer, and the other layer is a silver composite oxide layer. The two layers are fixed by fusion, and the silver composite oxide layer is The preparation method comprises the following steps:
[0030] (1) Alloy smelting. Ag, Sn, La, Zr are mixed according to the following mass percentages and then smelted to form an alloy melt, wherein Sn is 10%, La is 1%, Zr is 5%, and the balance is Ag. The melting temperature 600°C;
[0031] (2) Gas atomization powder making, the alloy melt is atomized by high-pressure atomization equipment to make alloy powder, wherein the gas atomization pressure is 10MPa;
[0032] (3) isostatic pressing ingot, the alloy powder is processed into embryo ingot by isostatic pressing ingot, and the pressure is controlled at 150MPa;
[0033] (4) sintering, sintering the billet in a nitrogen atmosphere at a sintering temperature of...
Embodiment 2
[0037] The double-layer silver-based composite oxide electrical contact material B includes two layers, one of which is an AgCuZn layer, and the other layer is a silver composite oxide layer, and the two layers are fixed by fusion, wherein the silver composite oxide layer is The preparation method comprises the following steps:
[0038] (1) Alloy smelting. Ag, Sn, La, Zr are mixed according to the following mass percentages and then smelted to form an alloy melt, wherein Sn is 5%, La is 2%, Zr is 5%, and the balance is Ag. The melting temperature is 800°C;
[0039] (2) Gas atomization powder making, the alloy melt is atomized by high-pressure atomization equipment to make alloy powder, wherein the gas atomization pressure is 15MPa;
[0040] (3) isostatic pressing ingot, the alloy powder is processed into embryo ingot by isostatic pressing ingot, and the pressure is controlled at 120MPa;
[0041] (4) Sintering, sintering the billet in a nitrogen atmosphere at a sintering temp...
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