Core, stator, and rotary electric machine

A core that is used in an axial-gap rotary electric machine, comprising:

• a body;
• and
• frame-shaped flange portions,
• wherein the body includes an annular yoke and columnar teeth that are arranged in a circumferential direction of the yoke,
• wherein the flange portions are fixed to end portions of the respective teeth,
• wherein the yoke and the teeth are composed of a single powder compact,
• wherein each of the flange portions is composed of a powder compact that has a through-hole,
• wherein the end portion of each of the teeth is inserted in the through-hole, and an end surface of each of the teeth is exposed from the through-hole,
• wherein a ratio of a first area of the end surface of each of the teeth to a second area within an outer circumferential edge of each of the flange portions is 7.5% or more in a plan view in an axial direction of the yoke, and the second area includes an area of the through-hole,
• wherein the teeth have step portions on which the flange portions are placed,
• wherein each of the step portions includes a bottom surface, which is a flat surface parallel to the end surface, and a circumferential surface,
• wherein each of the flange portions includes a lower surface that is placed on the bottom surface, and
• wherein the lower surface protrudes from the bottom surface in a direction perpendicular to the circumferential direction and the axial direction,
• wherein heights of the step portions are equal to or more than thicknesses of the flange portions,
• wherein a difference between the heights of the step portions and the thicknesses of the flange portions are more than 0 mm and no more than 3 mm,
• wherein the end portion of each of the teeth has an inclined surface that intersects the end surface of the tooth, and
• wherein an angle formed by the inclined surface with respect to an extension surface from the end surface is no less than 5° and no more than 60°.