The detection device comprises a cold finger which performs the thermal connection between a detector and a cooling system. The cold finger comprises at least one side wall at least partially formed by an area made from the amorphous metal alloy. Advantageously, the whole of the cold finger is made from the amorphous metal alloy.

A method for producing an amorphous alloy soft magnetic powder, includes: producing an amorphous alloy powder that has an average particle diameter of 3.0 m or more and 40.0 m or less and that is formed of impurities and a composition represented by Fe.sub.a(Si.sub.1-xB.sub.x).sub.bC.sub.c, where 76.0a81.0, 16.0b22.0, 0<c3.0, and 0.5x0.9; and performing a heat treatment of heating at 370 C. or higher and 460 C. or lower. When the amorphous alloy soft magnetic powder is pressurized at a pressure of 63.7 MPa to produce a green compact having a mass of 7.0 g, volume resistivity is 3.710.sup.2 [.Math.cm] or less.

An amorphous alloy reinforced Cu-based composite coating and composite bulk material and a preparation method thereof, comprising an amorphous alloy reinforced Cu-based composite coating and an amorphous alloy reinforced Cu-based composite bulk material, both the amorphous alloy reinforced Cu-based composite coating and the amorphous alloy reinforced Cu-based composite bulk material comprise at least Cu powder and amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) powder, a proportion of the Cu powder included in the amorphous alloy reinforced Cu-based composite coating and the amorphous alloy reinforced Cu-based composite bulk material is 55% to 95%, a proportion of the amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) powder content in the amorphous alloy reinforced Cu-based composite coating and the amorphous alloy reinforced Cu-based composite bulk material is 5% to 45%. The thickness of the composite coating provided by the invention is 300 m to 2000 m, and the thickness of the composite bulk material reaches the centimeter level.

An Fe-based amorphous alloy ribbon reduced in iron loss, less deformed, and highly productive in a condition of a magnetic flux density of 1.45 T is provided. One aspect of the present disclosure provides an Fe-based amorphous alloy ribbon having first and second surfaces, and is provided with continuous linear laser irradiation marks on at least the first surface. Each linear laser irradiation mark is formed along a direction orthogonal to a casting direction of the Fe-based amorphous alloy ribbon, and has unevenness on its surface. When the unevenness is evaluated in the casting direction, a height difference HLwidth WA calculated from the height difference HL between a highest point and a lowest point in a thickness direction of the Fe-based amorphous alloy ribbon and the width WA which is a length of the linear irradiation mark on the first surface is 6.0 to 180 m.sup.2.

Embodiments relate to a cutting tool comprising a base material, an amorphous alloy forming an amorphous alloy matrix layer; and a plurality of diamond particles embedded in the amorphous alloy matrix layer forming a cutting edge, wherein the amorphous alloy matrix layer bonds the plurality of diamond particles and the base material.

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 a material comprising a ceramic formed from an amorphous metal alloy (amorphous metal ceramic composite), wherein the composite exhibits a higher corrosion resistance than that of Haynes 230 when exposed to molten chlorides such as KCl or MgCl.sub.2 or combinations thereof at temperatures up to 750 C. Yet, another embodiment relates to a method comprising obtaining a substrate, forming a coating of an amorphous metal alloy, heating the coating, and transforming at least a portion the amorphous metal alloy into an amorphous metal ceramic composite.

A high-strength R-T-B rare earth permanent magnet having an amorphous grain boundary phase includes: 29.0 wt. %-34.0 wt. % of large-atomic-radius elements with the atomic radius r satisfying r0.16 nm, said large-atomic-radius elements comprising 0.1 wt. %-0.8 wt. % of Mf, and Mf being any one or two of Zr and Mg; 1.05 wt. %-1.65 wt. % of small-atomic-radius elements with r0.12 nm, said small-atomic-radius elements comprising 0.8 wt. %-1.1 wt. % of boron element, and the total content C1 of the small-atomic-radius elements satisfying 0.25 wt. %[C1][B]0.55 wt. %; and the balance being medium-atomic-radius elements with 0.12 nm<r<0.16 nm and impurities, said medium-atomic-radius elements at least comprising 60.0 wt. % of TM, the TM being at least one of Fe and Co, and the content of other medium-atomic-radius elements except said TM being 0.2 wt. %. In the present invention, the proportion of the amorphous grain boundary phase in the grain boundary phase of the magnet is increased to 20 vol. % or more, thereby improving the capability of resisting crack propagation of the grain boundary phase of the magnet, and manufacturing a high-strength R-T-B rare earth permanent magnet.

An amorphous alloy reinforced Cu-based composite coating and composite bulk material and a preparation method thereof, comprising an amorphous alloy reinforced Cu-based composite coating and an amorphous alloy reinforced Cu-based composite bulk material, both the amorphous alloy reinforced Cu-based composite coating and the amorphous alloy reinforced Cu-based composite bulk material comprise at least Cu powder and amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) powder, a proportion of the Cu powder included in the amorphous alloy reinforced Cu-based composite coating and the amorphous alloy reinforced Cu-based composite bulk material is 55% to 95%, a proportion of the amorphous alloy (Fe.sub.54.61Mo.sub.16.8Cr.sub.25.8C.sub.2.44Si.sub.0.35) powder content in the amorphous alloy reinforced Cu-based composite coating and the amorphous alloy reinforced Cu-based composite bulk material is 5% to 45%. The thickness of the composite coating provided by the invention is 300 m to 2000 m, and the thickness of the composite bulk material reaches the centimeter level.