Patent ID: 8749339
Filing Date: 2014-06-10
Classification: B22F,C22C,H01F,Y10T

Abstract:
1. A coil-type electronic component having a base material and a coil inside or on the surface of the base material, wherein the base material is constituted by a group of grains of a soft magnetic alloy containing iron, silicon and other element that oxidizes more easily than iron; the surface of each soft magnetic alloy grain has an oxide layer formed on the surface of each soft magnetic alloy grain as a result of oxidization of the grain; said oxide layer contains the other element that oxidizes more easily than iron in a quantity larger than that in the soft magnetic alloy grain; and grains are bonded with one another via said oxide layer, wherein the aforementioned oxide layer includes in this order a first oxide layer where the content of the aforementioned iron component decreases while the content of the aforementioned element that oxidizes easily increases, and a second oxide layer where the content of the aforementioned iron component decreases and the content of the aforementioned element that oxidizes easily also decreases, as viewed outwardly from the aforementioned alloy grain.