In-situ endogeny multi-phase particle enhanced aluminum-based composite material and preparing method thereof
A particle-reinforced aluminum and composite material technology, applied in the field of metal matrix composite materials, can solve the problems of inability to effectively control the content of reinforced particles, difficult to distribute the reinforced phase uniformly, and inability to mass-produce, and achieve good comprehensive mechanical properties and high bonding strength. , thermodynamically stable effect
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[0019] Example 1
[0020] (1) First, prepare the required raw materials according to the following mass percentages: industrial pure aluminum powder 94.0 (size ≤50μm), boron nitride powder 3.0 (size ≤2μm), zirconium dioxide powder 3.0 (size ≤2μm);
[0021] (2) Weigh the materials in step (1) in proportion, firstly mill aluminum powder and zirconium dioxide powder at low speed (ball mill speed 100r / min) for 2h, then add boron nitride powder to high-speed ball mill (ball mill speed 300r / min) 8h, the above two steps of ball milling are all carried out under argon atmosphere, and the ball to material ratio is set at 4:1;
[0022] (3) The material degassing jacket after two-step ball milling in step (2) is pressed into a preform in a cold isostatic press;
[0023] (4) The solid-liquid sequential sintering method is adopted, that is, the preform is placed in a vacuum sintering furnace, and the vacuum degree is set to 5×10 - 5 Pa. First, solid-phase sintering controls the sintering temperatu...
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[0025] Example 2
[0026] (1) First, prepare the required raw materials according to the following mass percentages: industrial pure aluminum powder 78.0 (size ≤50μm), boron nitride powder 10.0 (size ≤2μm), zirconium dioxide powder 12.0 (size ≤2μm);
[0027] (2) Weigh the materials in step (1) in proportion, firstly mill aluminum powder and zirconium dioxide powder at low speed (100r / min of ball mill) for 4h, then add boron nitride powder to high-speed ball mill (300r / min of ball mill) 18h, the above two steps of ball milling are carried out under argon atmosphere, and the ratio of ball to material is set at 5:1;
[0028] (3) The material degassing jacket after two-step ball milling in step (2) is pressed into a preform in a cold isostatic press;
[0029] (4) The solid-liquid sequential sintering method is adopted, that is, the preform is placed in a vacuum sintering furnace, and the vacuum degree is set to 5×10 - 5 Pa, first solid-phase sintering controls the sintering temperature to...
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[0031] Example 3
[0032] (1) First, prepare the required raw materials according to the following mass percentages: industrial pure aluminum powder 50.0 (size ≤ 6μm), boron nitride powder 22.0 (size ≤ 2μm), zirconium dioxide powder 28.0 (size ≤ 2μm);
[0033] (2) Weigh the materials in step (1) in proportion, firstly mill aluminum powder and zirconium dioxide powder at low speed (100r / min of ball mill) for 6h, then add boron nitride powder to high-speed ball mill (300r / min of ball mill) 40h, the above two steps of ball milling are carried out under argon atmosphere, and the ball-to-material ratio is set at 6:1;
[0034] (3) The material degassing jacket after two-step ball milling in step (2) is pressed into a preform in a cold isostatic press;
[0035] (4) The solid-liquid sequential sintering method is adopted, that is, the preform is placed in a vacuum sintering furnace, and the vacuum degree is set to 5×10 - 5 Pa. First, solid-phase sintering controls the sintering temperature to...
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