SOFT MAGNETIC MATERIAL, CORE AND INDUCTOR

• Main Authors: ABE KYOTARO, KOEDA SHINJI, SHINKAI YOSHIHIRO, KAMIYA TAKASHI
• Format: Patent
• Language: English; Japanese
• Published: 19.07.2018
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; INDUCTANCES; MAGNETS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TRANSFORMERS

PROBLEM TO BE SOLVED: To provide: a soft magnetic material having high magnetic permeability and excellent DC superposing characteristics; a core; and an inductor.SOLUTION: A soft magnetic material comprises: soft magnetic metal powder; and a resin. The soft magnetic metal powder includes a particle group α and a particle group β. When a peak intensity of the particle group α is denoted by IA, a peak intensity of the particle group β is denoted by IB, and a minimum intensity which is present between the particle group α and the particle group β is denoted by IC, the intensity ratio IC/IA is 0.10 or less, and the intensity ratio IA/IB is 1.2 or more and 3.0 or less. The peak particle diameter PA of the particle group α is larger than the peak particle diameter PB of the particle group β.SELECTED DRAWING: Figure 1 【課題】高い透磁率を有し、直流重畳特性にも優れた軟磁性材料、コア及びインダクタを提供することである。【解決手段】軟磁性金属粉末と樹脂とを含む、軟磁性材料であって、前記軟磁性金属粉末は、粒子群αと粒子群βで構成され、粒子群αのピーク強度をＡ、粒子群βのピーク強度をＩＢ、粒子群αと粒子群βの間に存在する極小の強度をＩＣとしたときに、強度比ＩＣ／ＩＡが０．１０以下、強度比ＩＡ／ＩＢが１．２以上、３．０以下となり、粒子群αのピーク粒径ＰＡは粒子群βのピーク粒径ＰＢよりも大きいことを特徴とする軟磁性材料。【選択図】図１