Custom Soft Magnetic Materials and Transformer Core Manufacturers in China

Ultra-microcrystalline iron core manufacturers: introduce the 'secret' of amorphous strip

by:Transmart     2022-07-29


Nanocrystalline Cores: The 'Secret' of Amorphous Ribbons! What is Amorphous Ribbon? There are generally two kinds of materials that people touch in daily life: one is crystalline material and the other is amorphous material. The so-called crystalline material means that the arrangement of atoms inside the material follows a certain law. On the contrary, if the internal atoms are arranged in an irregular state, it is an amorphous material, and a general metal, whose internal atoms are arranged in an orderly manner, are all classified as crystalline materials. Scientists have found that after the metal is melted, the atoms inside are in an active state. Once the metal begins to cool, the atoms will follow the temperature drop, and slowly arrange them in an orderly manner according to a certain crystal law to form a crystal. If the cooling process is rapid, the atoms are condensed before they can be rearranged, thus producing an amorphous alloy. The preparation of amorphous alloys is a rapid condensation process. The high-temperature molten steel in the molten state is sprayed onto a cooling roll that rotates at a high speed. The molten steel is rapidly cooled at a speed of millions of degrees per second, and the molten steel at 1300 °C is lowered to below 200 °C in only one thousandth of a second, forming an amorphous strip. The primary characteristics of amorphous composite crystals 1. Amorphous composite crystals are composed of ferromagnetic elements (Fe, Ni, Co) and amorphous elements (Si, B, C); 2. Features of amorphous composite crystals: low distortion Coercive force, high permeability, low loss, low saturation magnetic induction, high resistivity, high temperature stability, excellent frequency characteristics and tunability of magnetic function; 3. After proper annealing, the iron-based non-wafer ( belt) exhibits lower specific total loss than oriented silicon steel sheet (belt). The use of amorphous ribbons. Compared with crystalline alloys, amorphous alloys have undergone significant changes in physical, chemical and mechanical functions. Taking the iron-based amorphous alloy as an example, it has the characteristics of high saturation magnetic induction and low loss. Due to such characteristics, amorphous alloy materials have a broad application space in many fields such as electronics, aviation, aerospace, machinery, and microelectronics. For example, in the aerospace field, it can reduce the power supply, equipment weight, and increase the payload. Used in civil power and electronic equipment, it can greatly reduce the size of the power supply, improve the efficiency, and enhance the anti-interference ability. Miniature cores can be used in many transformers in ISDN. Amorphous strips are used to make sensor tags for anti-theft systems in supermarkets and libraries. The magical effect of amorphous alloys has broad market prospects. At present, with the development of electronic technology towards high frequency and miniaturization, amorphous ultra-microcrystalline soft magnetic alloy materials have been made into various magnetic devices to replace silicon steel, ferrite and permalloy, which are used in power industry and electronic industry. In the field of power electronics and power electronics, it is used as transformers, reactors, filters, transformers, and sensors for current transformers, high-power switching power supplies, inverter power supplies and program-controlled switch power supplies.
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