A copper-molybdenum-copper-copper three-layer composite board and its manufacturing method
A composite plate and layer composite technology, applied in chemical instruments and methods, layered products, metal rolling, etc., can solve problems such as not easy delamination, and achieve the effects of low cost, high product qualification rate, and reduced cracking
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[0023] The preparation method of the copper-molybdenum-copper-copper three-layer composite board comprises the following steps:
[0024] Step 1: Electroplating the molybdenum-copper alloy plate with pure copper with a thickness of 2-5 microns in advance to obtain a copper-plated molybdenum-copper alloy plate 5;
[0025] Step 2: Cover both sides of the copper-plated molybdenum-copper alloy plate 5 with a copper plate 4 10% larger than the area, and place them together on the lower die 3 in the hot-press sintering furnace 1;
[0026] Step 3: Start the hot-pressing sintering furnace 1, press the upper die 2 downward, and press it tightly on the copper plate 4 to form a pressure of 10-25Mpa, then start to heat up from room temperature to 800-1000°C, and pass through the atmosphere protection. After heat preservation and pressure holding for 0.5-4 hours, keep the pressure constant and cool in the furnace to obtain a copper-molybdenum-copper-copper three-layer composite ingot;
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Embodiment 1
[0030] Embodiment 1, with reference to figure 1 , the manufacture of copper-molybdenum-copper-copper three-layer composite board, the size of copper-plated molybdenum-copper alloy plate 5 is (100×80×15) mm, the size of copper plate 4 is (120×100×17.5) mm, and the copper plate is sandwiched by molybdenum The copper plywood is placed in the center of the lower die 3, and the hot-press sintering furnace 1 is started, so that the upper die 2 is pressed down on the copper plate 4 to form a pressure of 15Mpa, and then heated to 850°C under the protection of a hydrogen atmosphere. Press for 30 minutes, then keep the pressure constant as the furnace cools. After cooling, the composite ingot is taken out, the middle layer is molybdenum-copper alloy, and the two sides are covered with a 17.5 mm thick copper layer.
[0031] The composite ingot was heated to 800°C under atmosphere protection, kept at a temperature of 20 minutes, taken out, and hot rolled to a thickness of 2 mm through 5 ...
Embodiment 2
[0032] Embodiment 2: the manufacture of copper-molybdenum copper-copper three-layer composite plate, the size of copper-plated molybdenum-copper alloy plate 5 is (80 * 50 * 20) millimeter, and the size of copper plate 4 is (100 * 60 * 20) millimeter, copper plate 4 Clamp the molybdenum-copper plywood and place it in the center of the lower die 3, start the hot-press sintering furnace 1, press the upper die 2 down on the copper plate to form a pressure of 20Mpa, and then heat it to 900°C in a vacuum environment, The vacuum degree is 10-4 Torr, heat preservation and pressure holding for 3 hours, then keep the pressure constant and cool down with the furnace. After cooling, the compounded ingot is taken out, the middle layer is molybdenum-copper alloy, and the two sides are covered with a 20 mm thick copper layer.
[0033] The composite ingot was heated to 850° C. in a mixed atmosphere of hydrogen and nitrogen (hydrogen volume: nitrogen volume = 3:1), kept for 30 minutes, and hot...
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