Method for dispersion strengthening of copper by titanium nitride
A dispersion-strengthened copper and titanium nitride technology, which is applied in the field of dispersion-strengthened materials and the preparation of high-strength and high-conductivity titanium nitride dispersion-strengthened copper materials, can solve problems such as difficult control, high cost, and long production cycle, and achieve high production efficiency, The effect of low cost, high strength and high conductivity softening performance
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Embodiment 1
[0019] Embodiment 1: Cu-0.3Ti alloy powder prepares titanium nitride dispersion strengthened copper:
[0020] 1) The air atomization powder making process is adopted. The titanium content in the copper-titanium alloy is 0.3 wt%, and the rest is pure copper. After the atomization is completed, the copper-titanium alloy powder containing 0.3 wt% titanium is obtained.
[0021] 2) Place the copper-titanium alloy powder in a high-purity nitrogen atmosphere furnace for nitriding. The nitriding temperature is 400°C, the nitriding time is 5 h, and the gas flow rate is 5 L / min. The nitriding reaction is carried out in a belt furnace , can be produced continuously.
[0022] 3) After the nitriding is completed, put the dispersion-strengthened copper powder into the elastic colloid sheath, and put it in a vacuum of 10 -1 After evacuating for 1 h in the Pa environment, cold isostatic pressing was performed at a pressure of 50 MPa, and the pressure was maintained for 30 s to obtain a green...
Embodiment 2
[0023] Embodiment 2: Cu-3Ti alloy powder prepares titanium nitride dispersion strengthened copper:
[0024] 1) Using the argon atomization powder making process, the titanium content in the copper-titanium alloy is 3 wt%, and the rest is pure copper. After the atomization is completed, the copper-titanium alloy powder containing 3 wt% titanium is obtained.
[0025] 2) Put the copper-titanium alloy powder in a decomposing ammonia atmosphere furnace for nitriding. The nitriding temperature is 900°C, the nitriding time is 0.1 h, and the gas flow rate is 0.5 L / min. The nitriding reaction is carried out in a belt furnace. Continuous production is possible.
[0026] 3) After the nitriding is completed, put the dispersion-strengthened copper powder into the elastic colloid sheath, and put it in a vacuum of 10 -2 After vacuuming for 10 h in the Pa environment, cold isostatic pressing was performed at a pressure of 300 MPa and the pressure was maintained for 10 min. Sintering in a w...
Embodiment 3
[0027] Embodiment 3: Preparation of titanium nitride dispersion strengthened copper by Cu-1.5Ti alloy powder:
[0028] 1) The nitrogen atomization powder making process is adopted. The titanium content in the copper-titanium alloy is 1.5 wt%, and the rest is pure copper. After the atomization is completed, the copper-titanium alloy powder containing 1.5 wt% titanium is obtained.
[0029] 2) Place the copper-titanium alloy powder in a high-purity nitrogen atmosphere furnace for nitriding. The nitriding temperature is 650°C, the nitriding time is 3 h, and the gas flow rate is 2 L / min. The nitriding reaction is carried out in a belt furnace , can be produced continuously.
[0030] 3) After the nitriding is completed, put the dispersion-strengthened copper powder into the elastic colloid sheath, and put it in a vacuum of 10 -2 After vacuuming for 5 h in the Pa environment, cold isostatic pressing was performed at a pressure of 150 MPa and the pressure was maintained for 5 min. S...
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Abstract
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