PRESSED POWDER MATERIAL AND ROTARY ELECTRIC MACHINE

• Main Authors: SUETSUNA TOMOHIRO, SANADA NAOYUKI, HAGIWARA MASAYA, KIUCHI HIROAKI
• Format: Patent
• Language: English; Japanese
• Published: 05.10.2022
• Subjects: BASIC ELECTRIC ELEMENTS; CASTING; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION; 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

To provide a pressed powder material having an excellent magnetic characteristic and a rotary electric machine.SOLUTION: A pressed powder material of an embodiment, is a pressed powder material comprising: a first magnetic metal particle having a magnetic metal phase including Fe and Co; and a second magnetic metal particle having the magnetic metal phase including Fe. When an amount of Co with respect to a total amount of Fe and Co of the first and second magnetic metal particles is denoted as Co1 and Co2, respectively, a ratio of Co2 with respect to the Co1 (Co2/Co1) is 0 or more and 0.5 or less. In an average value of the ratio of the major axis to the minor axis, the first magnetic metal particle is two or more, the second magnetic metal particle is one or more, and the second magnetic metal particle exists between particles of the first magnetic metal particle. The average value of the major axis of the second magnetic metal particle is the same as compared with the average value of the major axis of the first magnetic metal particle, or longer than them.SELECTED DRAWING: Figure 2 【課題】優れた磁気特性を有する圧粉材料及び回転電機を提供する。【解決手段】実施の形態の圧粉材料は、Ｆｅ及びＣｏを含む磁性金属相を有する第１の磁性金属粒子と、Ｆｅを含む磁性金属相を有する第２の磁性金属粒子と、を備える圧粉材料であり、前記第１及び第２の磁性金属粒子のＦｅとＣｏの合計量に対するＣｏの量を、それぞれＣｏ１及びＣｏ２とした際に、Ｃｏ１に対するＣｏ２の比（Ｃｏ２／Ｃｏ１）が０以上０．５以下であり、短径に対する長径の比の平均値が前記第１の磁性金属粒子は２以上であり、前記第２の磁性金属粒子は１以上であり、前記第２の磁性金属粒子が前記第１の磁性金属粒子の粒子間に存在し、前記第２の磁性金属粒子の長径の平均値は、前記第１の磁性金属粒子の長径の平均値と比べ、同じかそれより長い圧粉材料。【選択図】図２