Patent ID: 11858045
Assignee: HIROSHIMA UNIVERSITY
Field: Materials, metallurgy (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 0:
1. A Fe-based sintered body comprising:
a matrix containing Fe as a main component; and
a dispersed phase in the matrix,
the matrix being formed in a network shape and containing αFe,
the dispersed phase including a hard phase containing TiC, the hard phase having a ring shape or a ring-like shape, and
the hard phase having a width of not more than 1.0 μm in a direction perpendicular to a circumferential direction of the hard phase,, wherein the matrix accounts for not less than 60% by mass in the Fe-based sintered body, and the matrix has a cementite content of not more than 5% by mass, and wherein the Fe-based sintered body has a surface portion which is exposed to outside and an inside portion which is present closer to a center as compared to the surface portion, and the surface portion has a higher hardness than the inner portion.