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出願の表示

1. IN6129/DELNP/2014 - POWDER FOR MAGNETIC CORE AND POWDER MAGNETIC CORE

注意: このテキストは、OCR 処理によってテキスト化されたものです。法的な用途には PDF 版をご利用ください。

[ EN ]
Claims [Claim 1]A powder for a magnetic core, comprising:a soft magnetic metal powder; andan insulating coating film covering a surface of the soft magnetic metal powder,wherein the insulating coating film is formed of an aggregate of silicate layers obtained by cleaving a swellable layered clay mineral. [Claim 2]The powder for a magnetic core according to claim 1, wherein the swellable layered clay mineral is a swellable smectite-group mineral or a swellable mica-group mineral. [Claim 3]The powder for a magnetic core according to claim 1 or 2, wherein the soft magnetic metal powder is produced by an atomizing method. [Claim 4]The powder for a magnetic core according to any one of claims 1 to 3, wherein the soft magnetic metal powder has a particle diameter of 30 |xm or more and 100 |im or less. [Claim 5]The powder for a magnetic core according to any one of claims 1 to 4, wherein the insulating coating film has a thickness of 1 nm or more and 500 nm or less. [Claim 6]A powder magnetic core, which is formed by heating a compact of raw material powder containing the powder for a magnetic core according to any one of claims 1 to 5 as a main component. [Claim 7]The powder magnetic core according to claim 6, wherein the powder magnetic core33 has a relative density of 93% or more. [Claim 8]The powder magnetic core according to claim 6 or 7, wherein the raw material powder comprises 0.3 to 7 vol% of a solid lubricant, with the balance being the powder for a magnetic core