Today, there is a great need for new materials which would help to decrease losses associated with electricity transmission and transformation. The purpose of these novel materials is to promote energy savings, helping to reduce carbon emissions while making for smaller and more efficient electronic devices.
Now, an international team of scientists from the National University of Science and Technology "MISIS" (NUST MISIS), Tianjin University (China), as well as from Japan and the United States has developed such a material. It is an energy-efficient iron-based alloy.
More specifically, it is an amorphous softmagnetic alloy that originates from low-cost alloy systems such as Fe-Si-B-Nb-Cu (iron-silicon-boron-niobium-copper). The material successfully combines high mechanical and magnetic properties with low production cost.
"For the development of new alloys based on iron with a high complex of magnetic and strength properties, we have analyzed a large number of alloy compositions. At the same time, we tried to avoid the use of expensive alloying elements, such as niobium and molybdenum. All the alloys examined in the work were obtained using industrial technology --quenching from a liquid state (melt spinning technic,)," said Andrei Bazlov, one of the authors of the study, an engineer at NUST MISIS.
To find this material, the team of scientists undertook the analysis of many Fe82-85B13-16Si1Cu1 alloys.
This enabled them to study the effects of their chemical compositions and heat treatment modes on the magnetic and mechanical properties. They were then able to obtain alloys with high magnetic properties, technological plasticity, and ultrahigh strength.
"In terms of their properties, the new amorphous iron-based alloys obtained by us surpass common industrial analogues not only in Russia but also abroad. Their undoubted advantages are relatively low cost (due to the lack of expensive alloying elements) and simplicity of industrial production," said Andrei Bazlov.
Now, the Scientists plan to continue to search for and engineer new compositions and processing regimes of amorphous magnetically soft alloys that can be implemented in the industry.
The study is published in the Journal of Alloys and Compounds.