An embodiment relates to an ultrasonic additive manufacturing process, comprising joining a foil comprising a bulk metallic glass to a substrate; and forming a cladded composite comprising the foil and the substrate; wherein a thickness of the cladded composite is greater than a critical casting thickness of the bulk metallic glass, wherein the cladded composite comprises a cladding layer of the bulk metallic glass on the substrate and the bulk metallic glass comprises approximately 0% crystallinity, approximately 0% porosity, less than 50 MPa thermal stress, approximately 0% distortion, approximately 0 inch heat affected zone, approximately 0% dilution, and a strength of about 2,000-3,500 MPa.

An embodiment relates to an ultrasonic additive manufacturing process, comprising joining a foil comprising a bulk metallic glass to a substrate; and forming a cladded composite comprising the foil and the substrate; wherein a thickness of the cladded composite is greater than a critical casting thickness of the bulk metallic glass, wherein the cladded composite comprises a cladding layer of the bulk metallic glass on the substrate and the bulk metallic glass comprises approximately 0% crystallinity, approximately 0% porosity, less than 50 MPa thermal stress, approximately 0% distortion, approximately 0 inch heat affected zone, approximately 0% dilution, and a strength of about 2,000-3,500 MPa.

A rolled copper foil for producing a two-dimensional hexagonal lattice compound, including P: 0.01 to 0.21 wt %, Fe: 0.006 wt % or less, and the balance being Cu and inevitable impurities, and having the following relationship: 2.0<=(I/I.sub.0) where I is a (111) diffraction intensity determined by an X ray diffraction of a rolled surface after heating at 1000° C. for 30 minutes and I.sub.0 is a (111) diffraction intensity determined by an X ray diffraction of fine powder copper.

A rolled copper foil for producing a two-dimensional hexagonal lattice compound, including P: 0.01 to 0.21 wt %, Fe: 0.006 wt % or less, and the balance being Cu and inevitable impurities, and having the following relationship: 2.0<=(I/I.sub.0) where I is a (111) diffraction intensity determined by an X ray diffraction of a rolled surface after heating at 1000° C. for 30 minutes and I.sub.0 is a (111) diffraction intensity determined by an X ray diffraction of fine powder copper.

The present invention is a superconducting stabilization material used for a superconducting wire, which is formed of a copper material which contains: one or more types of additive elements selected from Ca, La, and Ce in a total of 3 ppm by mass to 400 ppm by mass; and a balance being Cu and inevitable impurities and in which a total concentration of the inevitable impurities excluding O, H, C, N, and S which are gas components is 5 ppm by mass to 100 ppm by mass.

An electric contact pair includes a first electric contact, and a second electric contact to be brought into electrical contact with the first electric contact. The first electric contact includes a first plating film made of Ag or a Ag alloy on its outermost surface, and the second electric contact includes a second plating film made of Rh or a Rh alloy on its outermost surface. The first plating film maybe layered on a first conductive base material, the second plating film maybe layered on a second conductive base material, and the first conductive base material and the second conductive base material are made of copper or a copper alloy, or aluminum or an aluminum alloy. A connector terminal pair includes a first terminal including the first electric contact, and a second terminal including the second electric contact.

A layered structure for forming charging terminals for high power applications. In some embodiments, the layered structure may include a substrate and a contact layer disposed over at least a portion of the substrate. The substrate may have a conductivity greater than 40% International Annealed Copper Standard (IACS). The contact layer may demonstrate a coefficient of friction of less than 1.4, such as from 0.1 to 1.4, as measured in accordance with American Society of Testing and Materials (ASTM) G99-17. The contact layer may include a precious-metal-based alloy, such as a silver-samarium alloy.

A metal matrix self-lubricating composite and a manufacturing method therefor. The metal matrix self-lubricating composite comprises a metal matrix and a mixture layer compounded on a surface of the metal matrix, the mixed layer comprising a copper alloy and a self-lubricating material. The method for manufacturing the metal matrix self-lubricating composite comprises the following steps: a) sintering copper alloy powder on a surface of a metal matrix to form a copper alloy layer on the surface of the metal matrix; b) blade-coating or dip-coating a lubricating material on a surface of the copper alloy layer, and performing vacuumization to obtain a metal plate, and drying the metal plate; c) repeating step b) for multiple times; and d) sintering the metal plate obtained in step c) to obtain the metal matrix self-lubricating composite. In the present invention, a vacuumization mode is used and vacuumization operations are repeated, so that a dense mixture layer on which a self-lubricating material is dispersed on a copper alloy is formed, and the metal matrix self-lubricating composite has good lubricity and abrasion resistance.

A metal matrix self-lubricating composite and a manufacturing method therefor. The metal matrix self-lubricating composite comprises a metal matrix and a mixture layer compounded on a surface of the metal matrix, the mixed layer comprising a copper alloy and a self-lubricating material. The method for manufacturing the metal matrix self-lubricating composite comprises the following steps: a) sintering copper alloy powder on a surface of a metal matrix to form a copper alloy layer on the surface of the metal matrix; b) blade-coating or dip-coating a lubricating material on a surface of the copper alloy layer, and performing vacuumization to obtain a metal plate, and drying the metal plate; c) repeating step b) for multiple times; and d) sintering the metal plate obtained in step c) to obtain the metal matrix self-lubricating composite. In the present invention, a vacuumization mode is used and vacuumization operations are repeated, so that a dense mixture layer on which a self-lubricating material is dispersed on a copper alloy is formed, and the metal matrix self-lubricating composite has good lubricity and abrasion resistance.

The present invention relates to a composite material of a metal and a non-metal and a heat dissipation part composed of the composite material. More specifically, the present invention relates to a composite material including a structure in which diamond particles which have excellent thermal conductivity are dispersed in a metal matrix, and particularly, to a highly reliable composite material capable of maintaining excellent heat dissipation properties even in a use environment such as military, aviation, space, or the like to which severe thermal cycles are applied, and to a heat dissipation part including the composite material.