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What are the properties of nitinol metallic powder?Nitinol Metal Powder (Niti alloy powder) is a Shape Memory alloy (SMA, for short), an alloy with a memory function. It can eliminate deformation completely at lowered temperatures, and then restore it after heating. The alloy with “memory’ effect is the material that retains its original shape.
Many successful applications of nitinol metallic powder have been made in the aerospace industry. The antenna can be made from memory alloy. Fold the parabolic satellite antenna into the body of the artificial satellite before it is launched. It is only necessary to heat the satellite after the rocket launches to place it in a specific orbit. The “memory function” of the folded antenna allows it to unfold and restore its parabolic shape.
Shape memory alloys have many applications in aerospace, electronics and machinery, biomedicine, bridge building, automobile industry, and everyday life.
What is the best way to prepare nitinol metallic powder?NiTi bars are the raw materials that can be used for the PREP technique to produce spherical metal powders of nitinol.
The steps of preparation for the PREP method for the preparation of spherical Nitinol Metal Powder are: the raw materials must be weighed and sized according to the experimental plan and poured into the cemented carbide tank ball milling for wet grind. The ball milling period is 24 hours. After the ball-milling, the pellets are vacuum-dried, with a drying time of 50 min and a temperature of 38deg C. They are then added to the granulation as forming agents. The powdered material is placed in a single-column press to be compressed, then it is placed in an integrated dewaxing-low-pressure sintering oven for sintering.
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