A winding-type coil component whose core member is constituted by: soft magnetic alloy grains 210 containing Fe, Si, and at least one of Cr and Al, as constituent elements; and an oxide layer 220 which is formed around the soft magnetic alloy grains to bond the soft magnetic alloy grains together and contains Si, as well as at least one of Cr and Al, as constituent elements, and whose content of Si based on mass is higher than the total content of Cr and Al. The winding-type coil component has high mechanical strength.

This soft magnetic powder is represented by composition formula Fe.sub.aSi.sub.bB.sub.cP.sub.dCu.sub.e with the exception of unavoidable impurities. In the composition formula, a, b, c, d and e satisfy 79≤a≤84.5 at %, 0≤b<6 at %, 4≤c≤10 at %, 4<d≤11 at %, 0.2≤e<0.4 at %, and a+b+c+d+e=100 at %.

The present application relates to an internally embedded copper plate-type soft magnetic powder core inductor, a preparation method therefor, and a use thereof. The internally embedded copper plate-type soft magnetic powder core inductor comprises a copper plate, a surface of the copper plate is covered with a soft magnetic material, and an interfacing area of the soft magnetic material and the copper plate includes an insulating resin material. The internally embedded copper plate-type soft magnetic powder core inductor possesses high density, high magnetic core magnetic permeability, high inductance, high saturated magnetic flux density, low volume, and low magnetic flux leakage, if said powder core inductor is used to replace a ferrite inductor of a same inductance for a low voltage DC/DC converter circuit, the same or greater efficiency can be achieved, and inductor volume can be reduced by at least half; the withstand voltage of the internally embedded copper plate type soft magnetic powder core inductor can reach over 15V, and the preparation method for said inductor is simple, possessing high production efficiency and suitable for large-scale automated production.

Magnetic particles, each including a core made of a metal magnetic material and a coating film which covers a surface of the core, in which the coating film contains a reaction product formed using a first metal alkoxide containing no metal atom-carbon atom bond in a molecule, and a second metal alkoxide containing two or more metal atom-carbon atom bonds in a molecule.

A light-emitting device can be folded in such a manner that a flexible light-emitting panel is supported by a plurality of housings which are provided spaced from each other and the light-emitting panel is bent so that surfaces of adjacent housings are in contact with each other. Furthermore, in the light-emitting device, in which part or the whole of the housings have magnetism, the two adjacent housings can be fixed to each other by a magnetic force when the light-emitting device is used in a folded state.

A light-emitting device can be folded in such a manner that a flexible light-emitting panel is supported by a plurality of housings which are provided spaced from each other and the light-emitting panel is bent so that surfaces of adjacent housings are in contact with each other. Furthermore, in the light-emitting device, in which part or the whole of the housings have magnetism, the two adjacent housings can be fixed to each other by a magnetic force when the light-emitting device is used in a folded state.

A composite iron-based powder mix suitable for soft magnetic applications such as inductor cores. Also, a method for producing a soft magnetic component and the component produced by the method. An iron-based powder composition including a mixture of: (a) phosphorous coated atomized iron particles which are further coated by a silicate layer; (b) phosphorous coated iron alloy particles, the iron alloy particles of 7% to 13% by weight silicon, 4% to 7% by weight aluminium, the balance being iron; and (c) a silicone resin.

A method for producing a grain oriented electrical steel sheet includes a decarburization annealing process where an oxidation degree PH.sub.2O/PH.sub.2 is controlled, an annealing separator applying process where a mass ratio of MgO and Al.sub.2O.sub.3 in an annealing separator is controlled, a final annealing process where an oxidation degree is controlled when atmosphere includes hydrogen or a dew point is controlled when atmosphere consists of inert gas, and an insulation coating forming process where a baking temperature and a heat treatment temperature are controlled.

A method for producing a grain oriented electrical steel sheet includes a decarburization annealing process where an oxidation degree PH.sub.2O/PH.sub.2 is controlled, an annealing separator applying process where a mass ratio of MgO and Al.sub.2O.sub.3 in an annealing separator is controlled, a final annealing process where hydrogen in mixed gas atmosphere is controlled to 50 volume % or more, an annealing separator removing process where water-washing is conducted using solution with inhibitor, a smoothing process where chemical-polished is conducted to control average roughness Ra, and an insulation coating forming process where insulation coating forming solution in which crystalline phosphide is included is applied.

A method for producing a grain oriented electrical steel sheet includes a decarburization annealing process where an oxidation degree PH.sub.2O/PH.sub.2 is controlled and pickling is conducted after decreasing temperature, an annealing separator applying process where a mass ratio of MgO and Al.sub.2O.sub.3 in an annealing separator is controlled, a final annealing process where an oxidation degree is controlled when atmosphere includes hydrogen or a dew point is controlled when atmosphere consists of inert gas, an annealing separator removing process where water-washing is conducted using solution with inhibitor, and an insulation coating forming process where a mass ratio of phosphoric acid and metal compound in insulation coating forming solution is controlled.