Fabricating method of composite material

A method of fabricating a composite material composed of a high-melting material and low-melting material, said method comprising:

• a first step of preparing a reinforced member by mechanically reinforcing said high-melting material by a method selected from the group consisting of a rolling method, a forging method, and an alloying method;
• a second step of forming pores in said reinforced member obtained in said first step by spraying a common material thereto by vacuum-plasma spraying means to obtain a substrate material having a porosity distribution, with the porosity gradually decreasing from a region defined in the high-melting material to a further region;
• and
• a third step of infiltrating said low-melting material in a molten state into said pores of said substrate material obtained in said second step to obtain a gradient material having a gradient distribution of a composite ratio of said high-melting material and low-melting material.

A method of fabricating a heat receiving material composed of a high heat conductive material and a low heat conductive material, said method comprising:

• a first step of forming a laminate of a substrate material selected from the group consisting of a dope-added press-rolled material and forged material as the low heat conductive material, and powder of the same kind as said substrate material, said powder being accumulated on one side of said selected substrate material;
• a second step of preparing, by sintering said laminate, a sintered material having pores formed at a porosity distribution, with the porosity gradually decreasing from a region defined in the laminate obtained in said first step, toward a further region;
• and
• a third step of infiltrating said high heat conductive material into pores of said sintered material to form a member having a gradient distribution of a composite ratio of said low heat conductive material and high heat conductive material.