Amorphous alloys are solidified by ultra-rapid cooling. When the alloy solidifies, the atoms have no time to arrange and crystallize in an orderly manner. The resulting solid alloy has a long-range disordered structure and does not have the grains and grain boundaries of crystalline alloys. This amorphous alloy has many unique properties. Due to its excellent performance and simple process, it has become the focus of research and development in the materials science community at home and abroad since the 1980s. Iron-based amorphous alloy is composed of 80% Fe and 20% Si, B-type metal elements. It has high saturation magnetic induction intensity (1.54T), and is superior to silicon steel sheets in terms of magnetic permeability, exciting current and iron loss. characteristics.
Fe-based amorphous alloys
Especially with low iron loss (1/3-1/5 of oriented silicon steel sheets), they can replace silicon steel as accessories Electric transformers can save 60-70% of energy. The strip thickness of iron-based amorphous alloy is about 0.03mm. It is widely used in distribution transformers, high-power switching power supplies, pulse transformers, magnetic amplifiers, intermediate frequency transformers and inverter cores. It is suitable for use at frequencies below 10kHz
Due to ultra-rapid solidification, the atoms do not have time to arrange and crystallize in an orderly manner when the alloy solidifies. The resulting solid alloy has a long-range disordered structure and does not have the grains and grain boundaries of the crystalline alloy. It is called an amorphous alloy and is called It is a revolution in metallurgical materials science. This amorphous alloy has many unique properties, such as excellent magnetism, corrosion resistance, wear resistance, high strength, hardness and toughness, high resistivity and electromechanical coupling properties. Due to its excellent performance and simple process, it has become the focus of research and development in the materials science community at home and abroad since the 1980s.
In the past thousands of years, the metals or alloys used by humans were materials with a crystalline structure. Their atoms were ordered in a three-dimensional space to form a periodic lattice structure.
Amorphous metals or alloys refer to when a substance is rapidly cooled from a liquid (or gas) state, it has no time to crystallize and retains a condensed state of disordered arrangement of liquid atoms at room temperature or low temperature, and its atoms no longer grow. The program is arranged in an orderly, periodic and regular manner, but out of a state of long-range disordered arrangement. Amorphous gold alloy with ferromagnetic properties is also called ferromagnetic metallic glass or magnetic glass (Glassy Alloy). For convenience of description, it is referred to as amorphous alloy below.