MAGNETIC SHEET

• Main Authors: UCHIYAMA RYOTA, MATSUNO KENICHIRO, HONJO YOSHIHIRO, ITO MAMORU, YADA YOSHIO, MATSUKAWA ATSUHITO, MURASE TAKU, SAKURAI YASUHIRO
• Format: Patent
• Language: English; Japanese
• Published: 22.06.2017
• Subjects: ALLOYS; BASIC ELECTRIC ELEMENTS; CASTING; CHEMISTRY; ELECTRICITY; FERROUS OR NON-FERROUS ALLOYS; INDUCTANCES; MAGNETS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TRANSFORMERS; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING METALLIC POWDER

PROBLEM TO BE SOLVED: To provide a magnetic sheet which is easy to manufacture, has excellent magnetic properties, and has high sheet surface resistance.SOLUTION: The magnetic sheet is formed by dispersing flat magnetic particles 4 in a synthetic resin 6. The flat magnetic particles 4 are at least one of Fe-Si-Cr alloy magnetic material, Fe-Si-Al-Cr alloy magnetic material and Fe-Al-Cr alloy magnetic material. On surfaces of the flat magnetic particles 4, segregation 8 of Cr having lengths in the longitudinal direction of 0.4 μm or more is present inside the surfaces of the magnetic particles 4.SELECTED DRAWING: Figure 2 【課題】製造が容易でありながら、磁気特性に優れ、しかもシート表面抵抗が高い磁性シートを提供すること。【解決手段】偏平な磁性体粒子４が合成樹脂６中に分散してある磁性シートである。偏平な磁性体粒子４が、Ｆｅ−Ｓｉ−Ｃｒ系合金磁性体、Ｆｅ−Ｓｉ−Ａｌ−Ｃｒ系系合金磁性体およびＦｅ−Ａｌ−Ｃｒ系合金磁性体の内の少なくともいずれかであり、偏平な磁性体粒子４の表面には、長手方向の長さが０．４μｍ以上のＣｒの偏析物８が前記磁性体粒子４の表面内部に含まれて存在する。【選択図】図２