Tdk Corporation

Hironobu Kumaoka

Kazuhiro Yoshidome

Akito Hasegawa

Hiroyuki Matsumoto

Satoko Mori

Kenji Horino

Isao Nakahata

Provided is a soft magnetic alloy including a Fe-based nanocrystal and metallic glass. A differential scanning calorimetry curve of the soft magnetic alloy has a glass transition point Tg, a temperature rising rate of the soft magnetic alloy in measurement of the differential scanning calorimetry curve is 40 K/minute, and a temperature Tp of a maximum exothermic peak in the differential scanning calorimetry curve is higher than the Tg.

Soft magnetic metal alloy and electronic component

A soft magnetic alloy including an internal area having a soft magnetic type alloy composition including Fe and Co, a Co concentrated area existing closer to a surface side than the internal area and having a higher Co concentration than in the internal area, and a Co concentration degree of the Co concentrated area is larger than 1.2.

Soft magnetic alloy and magnetic component technical field

A soft magnetic alloy including an internal area having a soft magnetic type alloy composition including Fe and P (phosphorous), and

Soft magnetic alloy and magnetic component

A soft magnetic alloy comprising an internal area having a soft magnetic type alloy composition including Fe and Co, a Co concentrated area existing closer to a surface side than the internal area and having a higher Co concentration than in the internal area, a SB concentrated area existing closer to the surface side than the Co concentrated area and having a higher concentration of at least one element selected from Si and B than in the internal area, and a Fe concentrated area including Fe existing closer to the surface side than the SB concentrated area; wherein a crystalized area ratio of the SB concentrated area represented by S/Sand a crystalized area ratio of the Fe concentrated area represented by S/S, satisfy a relation of (S/S)<(S/S).

A soft magnetic alloy including an internal area having a soft magnetic type alloy composition including Fe and Co, a Co concentrated area existing closer to a surface side than the internal area and having a higher Co concentration than in the internal area, and a SB concentrated area existing closer to the surface side than the Co concentrated area and having a higher concentration of at least one element selected from Si and B than in the internal area.

A soft magnetic alloy thin strip which has high saturation magnetic flux density and low coercivity, which enables a core with high space factor and high saturation magnetic flux density. A soft magnetic alloy thin strip including a main component that has a composition formula (FeX1X2))MBPSiCS. In the formula, X1, X2 and M are selected from a specific element group; 0&#x2264;a&#x2264;0.140, 0.020&#x2264;b&#x2264;0.200, 0&#x2264;c&#x2264;0.150, 0&#x2264;d&#x2264;0.090, 0&#x2264;e&#x2264;0.030, 0&#x2264;f&#x2264;0.030, &#x3b1;&#x2265;0, &#x3b2;&#x2265;0, and 0&#x2264;&#x3b1;+&#x3b2;&#x2264;0.50; and at least one of a, c and d is larger than 0. The strip has a structure that is composed of an Fe-based nanocrystal; and the surface roughness of a release surface satisfies 0.85&#x2264;Ra/Ra&#x2264;1.25 (wherein Rais the average of arithmetic mean roughnesses in the central portion, and Rais the average in the edge portion).

Growing community of inventors

Tokyo, Japan

Hironobu Kumaoka