Solid-phase alloying method of aluminum-silicon powder under high-pressure condition
A solid-phase alloying and conditional technology, which is applied in the field of preparing high-density aluminum-silicon alloys, can solve problems such as difficult to meet the use requirements, large-scale production is difficult, and production restrictions, so as to improve interdiffusion ability, The effect of low cost and excellent performance
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Embodiment 1
[0035] Aluminum powder with an average particle size of 7 μm and silicon powder with an average particle size of 50 μm are weighed and mixed according to the ratio of 10% aluminum powder and 90% silicon powder, and used as raw materials for later use. Put the mixture into the ball mill barrel of the ball mill mixer, fill the ball mill barrel with argon and seal it. The ball mill cylinder rotates three-dimensionally, the rotation speed is 60 times / min, and the ball mill mixing time is 60 minutes. Put the mixture of aluminum powder and silicon powder mixed by ball mill in a stainless steel container, place it in a vacuum heating furnace, and carry out vacuum heat treatment. The heat treatment temperature is 210°C, and the vacuum degree is greater than 6.67×10 -2 Pa, vacuum heat treatment time is 6h. The mixture of aluminum powder and silicon powder after vacuum treatment is put into a carbon steel steel sleeve with a diameter of 300mm in advance, and the powder is solid, and th...
Embodiment 2
[0037] Aluminum powder with an average particle size of 7 μm and silicon powder with an average particle size of 100 μm are weighed and mixed according to the ratio of 80% aluminum powder and 20% silicon powder, and used as raw materials for later use. Put the mixture into the ball mill barrel of the ball mill mixer, fill the ball mill barrel with argon and seal it. The ball mill cylinder rotates three-dimensionally, the rotation speed is 100 times / min, and the ball mill mixing time is 30 minutes. Put the mixture of aluminum powder and silicon powder mixed by ball mill in a stainless steel container, place it in a vacuum heating furnace, and carry out vacuum heat treatment. The heat treatment temperature is 190°C, and the vacuum degree is greater than 6.67×10 -2 Pa, the vacuum heat treatment time is 4h. Put the mixture of aluminum powder and silicon powder after vacuum treatment into a cylindrical carbon steel steel sleeve with a diameter of 100mm made in advance by carbon st...
Embodiment 3
[0039] Aluminum powder with an average particle size of 30 μm and silicon powder with an average particle size of 100 μm are weighed and mixed according to the ratio of 50% aluminum powder and 50% silicon powder, and used as raw materials for later use. Put the mixture into the ball mill barrel of the ball mill mixer, fill the ball mill barrel with argon and seal it. The ball mill cylinder rotates three-dimensionally, the rotation speed is 80 times / min, and the ball mill mixing time is 50 minutes. Put the mixture of aluminum powder and silicon powder mixed by ball mill in a stainless steel container, place it in a vacuum heating furnace, and carry out vacuum heat treatment. -2 Pa, vacuum heat treatment time is 5h. Put the mixture of aluminum powder and silicon powder after vacuum treatment into a carbon steel sleeve made of carbon steel in the shape of a 500×200×200mm cuboid in advance. The powder is solid, and the gas in the steel sleeve is degassed under vacuum conditions. ...
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