Now, with the company’s adoption and development of cold spray Additive Manufacturing, it is enabling its customers to produce high-power magnets. There are reported to be only four companies in the world able to operate with steady high magnetic fields, and one of them is a a customer of Safina based in France.
This customer is reported to have achieved a record induction of a magnetic field of more than 35 Tesla, making it one of the strongest magnets in the world.
The internal electro-magnet was made of fourteen polyhelices, allowing a very high magnetic field in a series of parts which have to support thermal and mechanical constraints (up to 440 MPa and 170°C). With cold spray Additive Manufacturing it is possible to achieve higher properties than possible with forging (with forging, there is a limitation of yield strength and electrical conductivity). The higher properties allow the installation to increase the available magnetic field for researchers.
Such a high magnetic field is made possible by running up to 30,000 A per cm² in the helices, with AM enabling a cooling system to be integrated. It is also possible to tune several properties, such as yield strength and electrical conductivity, with different heat treatments.
Safina helped the companydevelop a bespoke copper powder based on very specific customer requirements. It was the ability to supply a metal powder from the alloy, in such a high quality, which was said to enable the customer achieve such a high magnetic field induction.
The magnet has since been used by research institutions and universities for various physical experiments, such as understanding the processes of magnetic fields in space.