MAGNETIC MATERIAL AND METHOD FOR MANUFACTURING THE SAME

• Main Authors: MATSUMOTO AKIHIRO, IMAOKA NOBUYOSHI, YAMAMOTO SHINPEI, OZAKI KOYO
• Format: Patent
• Language: English; Japanese
• Published: 06.06.2019
• 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

To provide a novel magnetic material having high magnetic stability and superior oxidation resistance, which can achieve both remarkably larger saturation magnetization and lower coercive force than those achieved by a conventional ferrite-based magnetic material by using a magnetic material in which bcc or fcc-(FM,M) phases and M component-enriched phases are dispersed, and a method for manufacturing the magnetic material.SOLUTION: Disclosed is a magnetic material having solf or half-hard magnetism. The magnetic material comprises: a first phase including an FM component (where the FM component includes Fe, and Ni and/or Co) and an M component (where the M component is one or both of Mn and Ti) and having crystal of a bcc or fcc structure; and a second phase including an M component, in which a content of the M component to a total content of 100 atom% of the FM and M components is larger than a content of the M component to a total content of 100 atom% of the FM and M components in the first phase.SELECTED DRAWING: Figure 1 【課題】本発明は、ｂｃｃ又はｆｃｃ−（ＦＭ，Ｍ）相とＭ成分富化相をナノ分散した磁性材料を用いることで、従来のフェライト系磁性材料よりも格段に大きな飽和磁化と低い保磁力の双方を実現することができる磁気安定性の高い、そして耐酸化性に優れた新しい磁性材料とその製造方法を提供することを目的とする。【解決手段】ＦＭ成分（ここでＦＭ成分は、Ｆｅを含み、且つＮｉ及び／又はＣｏを含むものである）とＭ成分（ここでＭ成分は、Ｍｎ、Ｔｉのうちいずれか一種以上である）を含むｂｃｃ又はｆｃｃ構造の結晶を有する第１相と、Ｍ成分を含む相であって、その相に含まれるＦＭ成分とＭ成分の総和を１００原子％とした場合のＭ成分の含有量が、第１相に含まれるＦＭ成分とＭ成分の総和を１００原子％とした場合のＭ成分の含有量よりも多い第２相とを含む、軟磁性又は半硬磁性の磁性材料とする。【選択図】図１