SOFT MAGNETIC METAL POWDER DUST CORE AND MAGNETIC COMPONENT

• Main Authors: HORINO KENJI, MATSUMOTO HIROYUKI, UJIIE TORU, MORI KENTARO, NAKANO TAKUMA, MORI SATOKO, OTSUKA SHOTA, TOKORO SEIGO, YOSHIDOME KAZUHIRO
• Format: Patent
• Language: English; Korean
• Published: 18.09.2019
• 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

As a soft magnetic metal powder including a plurality of soft magnetic metal particles including an Fe, a surface of the soft magnetic metal particle is covered by a coating part, the coating part has a first coating part and a second coating part in this order from the surface of the soft magnetic metal particle toward the outside, the first coating part includes an oxide of Fe as a main component, the second coating part includes a compound of at least one element selected from a group consisting of P, Si, Bi, and Zn, and a ratio of the Fe atom whose valence is trivalent among the Fe atom in the oxide of Fe included in the first coating part is 50% or more. Therefore, the present invention is capable of providing good heat resistance property. Fe를 포함하는 연자성 금속 입자를 복수 포함하는 연자성 금속 분말로서, 연자성 금속 입자의 표면은 피복부에 의해 덮여 있고, 피복부는, 연자성 금속 입자의 표면에서 외측을 향하여, 제1 피복부와, 제2 피복부를 이 순서로 가지며, 제1 피복부는, Fe의 산화물을 주성분으로서 포함하고, 제2 피복부는, P, Si, Bi 및 Zn으로 이루어지는 군으로부터 선택되는 1개 이상의 원소의 화합물을 포함하고, 제1 피복부에 포함되는 Fe의 산화물에 있어서의 Fe 원자 중, 가수가 3가인 Fe 원자의 비율이 50% 이상인 것을 특징으로 하는 연자성 금속 분말이다.