SOFT MAGNETIC MATERIAL, CORE, AND INDUCTOR

• Main Authors: ISHIDA KOICHI, HYODO KOICHIRO
• Format: Patent
• Language: English; Japanese
• Published: 27.10.2014
• Subjects: BASIC ELECTRIC ELEMENTS; CASTING; ELECTRICITY; INDUCTANCES; MAGNETS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; PERFORMING OPERATIONS; POWDER METALLURGY; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TRANSFORMERS; TRANSPORTING; WORKING METALLIC POWDER

PROBLEM TO BE SOLVED: To provide a soft magnetic material, a core and an inductor which have a high magnetic permeability.SOLUTION: A soft magnetic material comprises: a first soft magnetic powder including first particles composed of first soft magnetic particles coated with an insulative material, and having an average particle diameter of 20-50 μm; a second soft magnetic powder including second particles composed of second soft magnetic particles coated with an insulative material, and having an average particle diameter of 1-10 μm; and a resin. The ratio of the mass percentage of the first soft magnetic powder to that of the second soft magnetic powder is given by A:B, and A and B satisfy the following conditions: A+B=100; 15≤A≤35; and 65≤B≤85. 【課題】高い透磁率を有する軟磁性材料、コア及びインダクタを提供することである。【解決手段】第１の軟磁性粒子が絶縁材料により被覆されてなる第１の粒子からなる第１の軟磁性粉末であって、２０μｍ以上５０μｍ以下の平均粒子径を有する第１の軟磁性粉末と、第２の軟磁性粒子が絶縁材料により被覆されてなる第２の粒子からなる第２の軟磁性粉末であって、１μｍ以上１０μｍ以下の平均粒子径を有する第２の軟磁性粉末と、樹脂とを含む軟磁性材料である。前記第１の軟磁性粉末の質量％と前記第２の軟磁性粉末の質量％との比は、Ａ：Ｂである。Ａ＋Ｂ＝１００、１５ Ａ ３５及び６５ Ｂ ８５の条件を満たしている。【選択図】図１