Heterogeneous composite material and method for producing the same

A heterogeneous composite material comprising:

• a first compression structure formed by compressing a first material;
• a second compression structure formed by compressing a second material different from the first material, and disposed in close contact with the first compression structure,
• wherein at least a portion of the first compression structure and at least a portion of the second compression structure are disposed on both sides of a boundary surface that has a predetermined radius with respect to a central axis and exists in a circular shape in a state in contact with each other at the boundary surface, and
• further comprises at least one of,
• a mixed layer including a portion of the first compression structure and a portion of the second compression structure;
• and
• a single layer including only a portion of the first compression structure or a portion of the second compression structure.

A method for manufacturing a heterogeneous composite material comprising:

• installing a frame in a first cavity formed in a mold;
• injecting a first material into an outer space of the frame of the first cavity;
• removing the frame to form a second cavity including a boundary surface in contact with the first material;
• injecting a second material different from the first material into the second cavity;
• and
• simultaneously compressing the first material and the second material to generate a heterogeneous composite material,
• wherein the boundary surface exists in a circular shape with a predetermined radius with respect to a central axis of the frame,
• wherein at least a portion of the first material and at least a portion of the second material are disposed on both sides of the boundary surface in a state in contact with each other at the boundary surface.

A method for manufacturing a heterogeneous composite material comprising:

• installing a frame having a shape of a cylinder or a hollow cylinder in a first cavity formed in a mold and having a shape of a cylinder or a hollow cylinder;
• injecting a first material in a form of powder into an outer space of the frame of the first cavity;
• removing the frame to form a second cavity including a boundary surface in contact with the first material;
• injecting a second material in a form of powder different from the first material into the second cavity;
• and
• simultaneously compressing the first material and the second material to generate a heterogeneous composite material,
• wherein the mold includes an opening corresponding to a plane of one side of the first cavity, the first material and the second material are injected through the opening, and the frame is inserted into the first cavity or discharged from the first cavity through the opening,
• wherein the frame is installed in the first cavity in a state, in which a central axis of a circular or ring-shaped cross-section of the frame coincides with a central axis of a circular or ring-shaped cross-section of the first cavity,
• wherein the boundary surface exists in a circular shape with a predetermined radius with respect to a central axis of a circular or ring-shaped cross section of the frame,
• wherein at least a portion of the first material and at least a portion of the second material are disposed on both sides of the boundary surface in a state in contact with each other at the boundary surface.