Aluminum-based composite material added with tungsten disulfide self-lubricating nanoparticles and preparation method thereof
An aluminum-based composite material and tungsten disulfide technology, which is applied in metal processing equipment, transportation and packaging, etc., can solve the problems of low wear resistance and limited application prospects, so as to improve dispersion, reduce the number of holes, and improve high-temperature hardness and the effect of high temperature wear resistance
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[0040] like figure 1 As shown, the preparation method of the aluminum-based composite material adding tungsten disulfide self-lubricating nanoparticles of the present invention comprises the following steps:
[0041] (1) Tungsten disulfide (WS 2 ) powder, copper powder and solid solvent are put into the high-energy ball mill and mixed evenly and cooled to obtain a composite powder;
[0042] (2) Putting the composite powder into a vacuum hot-press furnace for sintering and densification to obtain a composite ingot;
[0043] (3) In a vacuum melting furnace, melt the matrix and cast aluminum alloy, after the matrix alloy is melted, add the composite billet at 700-800°C, and stir it stably for 10-30min to obtain the mixture;
[0044] (4) Lower the furnace temperature to 550-620°C for semi-solid stirring, and stir steadily for 20-25min to obtain tungsten disulfide (WS) 2 ) a refined metal solution of nanoparticles;
[0045] (5) Preheat the casting mold to 250±10°C, add tungsten...
Embodiment 1
[0057] The preparation method of the aluminum-based composite material adding tungsten disulfide self-lubricating nanoparticles in this embodiment includes the following steps:
[0058] (1) Tungsten disulfide (WS 2 ) powder (the particle size is 40nm, accounting for 20% of the mass of the composite powder), pure copper powder (the particle size is 20 μm, accounting for 30% of the mass of the composite powder) and pure aluminum powder (the particle size is 20 μm) Uniformly mix in the high-energy ball mill, vacuum protection, the ball-to-material ratio is 15:1, the speed is 500rpm, after ball milling for 4 hours, cool to room temperature to obtain composite powder;
[0059] (2) Put the composite powder into a copper mold in a vacuum hot-press furnace for sintering and densification, with a vacuum degree of 10 - 2 Pa, the temperature is 550°C, vacuum hot pressing and sintering under the condition of 200MPa for 3h to obtain the composite ingot;
[0060] (3) In a vacuum melting ...
Embodiment 2
[0067] The preparation method of the aluminum-based composite material adding tungsten disulfide self-lubricating nanoparticles in this embodiment includes the following steps:
[0068] (1) Tungsten disulfide (WS 2 ) powder (the particle size is 40nm, accounting for 30% of the mass of the composite powder), pure copper powder (the particle size is 20 μm, accounting for 10% of the mass of the composite powder) and pure aluminum powder (the particle size is 20 μm) Mix evenly in the high-energy ball mill, vacuum protection, the ball-to-material ratio is 15:1, the rotation speed is 600rpm, and the ball mill is cooled to room temperature after 6 hours to obtain a composite powder;
[0069] (2) Put the composite powder into a copper mold in a vacuum hot-press furnace for sintering and densification, with a vacuum degree of 10 - 2 Pa, the temperature is 600°C, vacuum hot pressing and sintering under the condition of 150MPa for 3h to obtain the composite ingot;
[0070] (3) In a va...
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