Method for preparing Sm-Co binary alloy amorphous block material
A technology of bulk materials and binary alloys, applied in the field of new powder metallurgy
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example 1
[0018] Example 1. First, pure metal Sm and Co are mixed according to the mass ratio of 56.1%:43.9%, and single-phase SmCo is prepared by using a vacuum induction melting furnace. 2 alloy ingot. Under argon protection, the SmCo 2 The alloy ingot is broken into powder particles below 200μm. Under the protection of argon, the powder was ball milled, the ball to material ratio was 18:1, the ball milling speed was 500r / min, and the ball milling time was 8 hours, thus obtaining amorphous SmCo 2 alloy powder. Put the amorphous alloy powder into a cemented carbide mold, form it under pressure, and send it into the vacuum sintering chamber of the spark plasma sintering system. The sintering process parameters are: sintering temperature 330°C; sintering heating rate 100°C / min; sintering pressure 600MPa; no heat preservation when the sintering temperature is reached. A completely amorphous Sm-Co binary alloy bulk material (SmCo 2 The structural characterization of the base metal ing...
example 2
[0019] Example 2. First mix pure metal Sm and Co according to the mass ratio of 56.1%:43.9%, and use a vacuum induction melting furnace to prepare single-phase SmCo 2 alloy ingot. Under argon protection, the SmCo 2 The alloy ingot is broken into powder particles below 200μm. Under the protection of argon, the powder was ball milled, the ball to material ratio was 15:1, the ball milling speed was 600r / min, and the ball milling time was 10 hours, thus obtaining amorphous SmCo 2 alloy powder. Put the amorphous alloy powder into a cemented carbide mold, form it under pressure, and send it into the vacuum sintering chamber of the spark plasma sintering system. The sintering process parameters are: sintering temperature 300°C; sintering heating rate 80°C / min; sintering pressure 1GPa; no heat preservation when the sintering temperature is reached. A completely amorphous Sm-Co binary alloy bulk material (SmCo 2 The structural characterization of the base metal ingot, amorphous al...
example 3
[0020] Example 3. First, pure metal Sm and Co are mixed according to the mass ratio of 23.1%:76.9%, and single-phase Sm is prepared by using a vacuum induction melting furnace. 2 co 17 alloy ingot. Under the protection of argon, the Sm 2 co 17 The alloy ingot is broken into powder particles below 200μm. Under the protection of argon, the powder was ball milled, the ball to material ratio was 20:1, the ball milling speed was 550r / min, and the ball milling time was 12 hours, thus obtaining amorphous Sm 2 co 17 alloy powder. Put the amorphous alloy powder into a cemented carbide mold, form it under pressure, and send it into the vacuum sintering chamber of the spark plasma sintering system. The sintering process parameters are: sintering temperature 400°C; sintering heating rate 120°C / min; sintering pressure 500MPa; no heat preservation when the sintering temperature is reached. A completely amorphous Sm-Co binary alloy bulk material (Sm 2 co 17 The structural characteri...
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