Soft magnetic alloy powder, powder magnetic core, and magnetic component

• Main Authors: HASEGAWA AKITO, MORI SATOKO, YOSHIDOME KAZUHIRO
• Format: Patent
• Language: Chinese; English
• Published: 25.04.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; INDUCTANCES; MAGNETS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TRANSFORMERS

The invention relates to a soft magnetic alloy powder, a powder magnetic core, and a magnetic component. The soft magnetic alloy powder has a particle main body composed of a soft magnetic alloy containing Fe and Co, and a surface layer portion located on the surface side of the particle main body. The surface layer portion has at least one maximum point of Si concentration and at least one maximum point of Co concentration. Among the at least one maximum points of the Si concentration, the maximum point closest to the particle center side is defined as a first Si maximum point LSimax, the distance from the interface between the particle body and the surface layer portion to the LSimax is defined as DSi, the maximum point closest to the particle center side among the at least one maximum points of the Co concentration is defined as a first Co maximum point LComax, and the distance from the interface to the LComax is defined as DCo. DSi < = DCO is satisfied. 本发明涉及一种软磁性合金粉末、压粉磁芯及磁性部件。该软磁性合金粉末具有：由包含Fe和Co的软磁性合金构成