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1. (WO2019026612) POWDER FOR MAGNETIC POWDER CORE AND MAGNETIC POWDER CORE
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Pub. No.: WO/2019/026612 International Application No.: PCT/JP2018/026806
Publication Date: 07.02.2019 International Filing Date: 18.07.2018
IPC:
B22F 1/00 (2006.01) ,B22F 3/00 (2006.01) ,H01F 1/22 (2006.01) ,H01F 27/255 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
22
CASTING; POWDER METALLURGY
F
WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
1
Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition
B PERFORMING OPERATIONS; TRANSPORTING
22
CASTING; POWDER METALLURGY
F
WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
3
Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
F
MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
1
Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
01
of inorganic materials
03
characterised by their coercivity
12
of soft-magnetic materials
14
metals or alloys
20
in the form of particles, e.g. powder
22
pressed, sintered, or bound together
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
F
MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
27
Details of transformers or inductances, in general
24
Magnetic cores
255
made from particles
Applicants:
株式会社デンソー DENSO CORPORATION [JP/JP]; 愛知県刈谷市昭和町1丁目1番地 1-1, Showa-cho, Kariya-city, Aichi 4488661, JP
Inventors:
三富 将敬 MITOMI Masataka; JP
渡邊 朋泰 WATANABE Tomoyasu; JP
Agent:
服部 雅紀 HATTORI Masaki; JP
Priority Data:
2017-14993702.08.2017JP
Title (EN) POWDER FOR MAGNETIC POWDER CORE AND MAGNETIC POWDER CORE
(FR) POUDRE POUR NOYAU DE POUDRE MAGNÉTIQUE ET NOYAU DE POUDRE MAGNÉTIQUE
(JA) 圧粉磁心用粉末および圧粉磁心
Abstract:
(EN) A powder (1) for a magnetic powder core used for producing a magnetic powder core, wherein the powder (1) for the magnetic powder core comprises multiple crystalline grains (2) and has at least two relative maximum values (RV1, RV2) when data is plotted according to each grain size of a crystalline grain and a grain number ratio (Rv), said ratio being the proportion of the number of grains of each grain size to the number of grains having grain sizes which were measured.
(FR) La présente invention concerne une poudre (1) pour un noyau de poudre magnétique utilisé pour produire un noyau de poudre magnétique, la poudre (1) pour le noyau de poudre magnétique comprenant des grains cristallins multiples (2) et ayant au moins deux valeurs maximales relatives (RV1, RV2) lorsque les données sont représentées graphiquement en fonction de chaque taille de grain d’un grain cristallin et d’un rapport de nombre de grains (Rv), ledit rapport étant la proportion du nombre de grains de chaque taille de grain au nombre de grains ayant des tailles de grain qui ont été mesurées.
(JA) 圧粉磁心に用いられる圧粉磁心用粉末(1)であって、圧粉磁心用粉末(1)は、複数の結晶粒(2)を備え、結晶粒の各結晶粒径および結晶粒径が測定された結晶粒の個数に対する各結晶粒径における結晶粒の個数の割合である個数比率(Rv)でプロットしたときに、少なくとも2つの極大値(Rv1,Rv2)を有する。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)