Method for preparing Cu-TiNi composite material
A technology of composite materials and raw materials, applied in the field of preparation of Cu-TiNi composite materials, can solve problems such as failure, interface debonding, poor interface bonding strength, etc., achieve high thermal conductivity, high interface bonding strength, and improve thermal conductivity.
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Embodiment 1
[0019] 1. Red copper plate and TiNi alloy strip containing 55wt% Ni are used as raw materials. There are two copper plates, one of which is 4.2mm thick, on which a plurality of small grooves of 2.4mm deep, 2.0mm wide, and 2.0mm apart are processed; the other is about 1.8 mm thick. TiNi alloy 2.5mm thick, wire cut to a TiNi alloy strip with an end face size of 2.5mm×2.0mm, the length depends on the size of the copper plate;
[0020] 2. After pickling the purple Cu plate and TiNi alloy strip to remove the oxide film, they are embedded and riveted and fixed, and the whole is placed in a hydrogen-protected resistance heating furnace, heated to 750 ° C, kept for 40-50 minutes, and then a reduction of 65% is carried out hot rolling to obtain Cu / TiNi composite sheet material;
[0021] 3. Heat the Cu / TiNi composite material obtained in step (2) in a vacuum heating furnace at 750°C for 2 hours. After water-cooling and quenching, apply a compressive stress of 360 MPa along the longitud...
Embodiment 2
[0023] 1. Red copper plate and TiNi alloy strip containing 57wt% Ni are used as raw materials. There are two copper plates, one of which is 4.2mm thick, and a plurality of small grooves of 2.4mm deep, 2.0mm wide, and 2.0mm apart are processed on it; the other is about 1.8mm thick. TiNi alloy 2.5mm thick, wire cut to a TiNi alloy strip with an end face size of 2.5mm×2.0mm, the length depends on the size of the copper plate;
[0024] 2. Pickling the purple Cu plate and TiNi alloy strip to remove the oxide film, then inserting and riveting them, place the whole in a hydrogen-protected resistance heating furnace, heat to 780°C, keep it warm for 40-50min, and then carry out a reduction of 70% hot rolling to obtain Cu / TiNi composite sheet material;
[0025] 3. Heat the Cu / TiNi composite material obtained in step (2) in a vacuum heating furnace at 780°C for 2 hours. After water-cooling and quenching, apply a compressive stress of 311MPa along the longitudinal direction of the plate,...
Embodiment 3
[0027] 1. Red copper plate and TiNi alloy strip containing 58wt% Ni are used as raw materials. There are two copper plates, one of which is 4.2mm thick, and a plurality of small grooves with a depth of 2.4mm, a width of 2.0mm, and a distance of 2.0mm are processed on it; the other is about 1.8mm thick. TiNi alloy 2.5mm thick, wire cut to a TiNi alloy strip with an end face size of 2.5mm×2.0mm, the length depends on the size of the copper plate;
[0028] 2. After pickling the purple Cu plate and TiNi alloy strip to remove the oxide film, they are embedded and riveted and fixed, and the whole is placed in a hydrogen-protected resistance heating furnace, heated to 820 ° C, kept for 40-50 minutes, and then a reduction of 75% is carried out hot rolling to obtain Cu / TiNi composite sheet material;
[0029] 3. Heat the Cu / TiNi composite material obtained in step (2) in a vacuum heating furnace at 810°C for 2 hours. After water-cooling and quenching, apply a compressive stress of 239M...
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Abstract
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