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Nitinol Metal Powder – Property and Preparation

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Update time : 2021-02-08 09:17:32


What is the nitinol metal powder property?

Nitinol metal powder ( NiTi alloy powder ) belongs to an alloy with special memory function, namely Shape Memory Alloys (Shape Memory Alloys, SMA for short), which can completely eliminate its deformation at a lower temperature and restore its deformation after heating and heating. The alloy material in the original shape is the alloy with the "memory" effect.

There are many successful examples of the application of nitinol metal powder in the aerospace field. The huge antenna on the artificial satellite can be made of memory alloy. Before launching an artificial satellite, fold the parabolic antenna into the satellite body. After the rocket lifts off to send the artificial satellite to a predetermined orbit, it only needs to be heated. The folded satellite antenna naturally unfolds due to its "memory" function and restores its parabolic shape.

Because of its many excellent properties, shape memory alloys are widely used in many fields such as aerospace, machinery and electronics, biomedicine, bridge construction, automobile industry and daily life.

What is the nitinol metal powder preparing method?

The raw materials for preparing spherical nitinol metal powder by the PREP method include: NiTi alloy bars.
The preparation steps for preparing spherical nitinol metal powder by PREP method are as follows: the raw materials are weighed and proportioned according to the experimental design plan, and then poured into a cemented carbide ball milling tank for wet grinding. The ball milling time is 24 hours. After the ball milling is finished, the obtained pellets are vacuum dried, the drying time is 50 min, and the drying temperature is 38° C., and then added as a forming agent for granulation. The prepared powder is added to a single-column hydraulic press for compression forming, and then placed in a dewaxing-low pressure sintering integrated furnace for sintering, the sintering temperature is 1100°C, and the holding time is 95 min.
Using NiTi alloy bars as raw materials, after batching, ball milling, drying, granulation, forming, and sintering, the PREP method with excellent mechanical properties was successfully prepared to prepare spherical nitinol metal powder. Among them, nitinol metal powders are mainly spherical particles, and the martensite transformation temperature decreases as the particle size of the powder decreases. The prepared PREP method prepares spherical nitinol metal powder, and its hardness, densification degree and bending strength are greatly improved.

Luoyang Trunnano Tech Co., Ltd (TRUNNANO) is a professional nitinol metal powder with over 12 years experience in chemical products research and development. If you are looking for high quality nitinol metal powder, please feel free to contact us and send an inquiry.
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