Abstract: The invention relates to the technical field of amorphous soft magnetic material, specifically relating to the field of Fe—Co based amorphous soft magnetic alloy and preparation method thereof. The Fe—Co based amorphous soft magnetic alloy provided in the invention has chemical composition of FeaCobSicBdCue, which possesses merits of highly-saturated magnetic induction, outstanding soft magnetic property and great amorphous forming ability at the same time; the embodiment of Fe—Co based amorphous soft magnetic alloy disclosed in the invention has indicated that its saturation magnetic induction is 1.79˜1.86 T, coercivity 1.4˜4.3 A/m, and permeability 8000˜14000; the invention has advantages of easy treatment process, low annealing temperature, which reduces process cost remarkably and economizes energy, thus having great application prospect.

Abstract: The invention discloses a centimeter-level high-strength iron-based bulk amorphous alloy and novel copper mold casting method thereof; the molecular formula thereof is Fe44-xCo6Cr15Mo14C15B6Tmx, wherein x represents the atomic percent of corresponding alloy elements and 0?x?6; the novel copper mold casting method comprising: directly cooling a copper mold with cooling water under negative pressure through electric arc melting to obtain an amorphous alloy ingot; the alloy has the remarkable characteristics of high amorphous forming ability, high strength and high hardness, by the conventional casting, the maximum critical diameter can be 10 mm, the highest strength can be 4295 Mpa, and the highest Vickers hardness can be 1220 Hv; meanwhile, the alloy has obvious spinning glass behavior at low temperature; the preparation method has low cooling rate, is free from the limitation of mold diameter, and can directly obtain the amorphous alloy ingot, the cost is reduced, and the maximum diameter of the amorphous all

Abstract: The invention discloses an iron-based amorphous nanocrystalline laser cladding composite coating and preparation and test methods thereof; the composition of the cladding composite coating meets the molecular formula: FeaCobNicBdSiyNbe, wherein a, b, c, d, y, and e respectively represent the atomic percentage of the corresponding alloy element; a plus b plus c plus d plus y plus e equals 100; the preparation method is: weighing the raw materials and mixing to obtain the alloy powder, substrate pretreatment, tiling the alloy powder on the surface of the substrate, the laser beam is scanned vertically to perform laser cladding on the alloy powder. The composite has a certain amorphous content, high microhardness, excellent wear resistance, and outstanding fracture strength. The preparation process is simple, the raw materials do not contain rare earths or volatile elements, and the application prospect is broad.

Abstract: Disclosed is a Fe—Ga—P—C—B—Si based metallic glass alloy particle prepared by a gas atomizing process, which has an approximately complete spherical shape, a relatively large particle size and a high crystallization temperature (Tx). The plurality of particles may be subjected to a spark plasma sintering process at the crystallization temperature or less under a compression pressure of 200 MPa or more, to provide a bulk Fe-based sintered metal soft magnetic material of metallic glass, which has a high density, a single phase structure of metallic glass in an as-sintered state, excellent soft magnetic characteristics applicable to a core of a magnetic head, a transformer or a motor, and a high specific resistance.

Abstract: Disclosed is a Fe—Ga—P—C—B—Si based metallic glass alloy particle prepared by a gas atomizing process, which has an approximately complete spherical shape, a relatively large particle size and a high crystallization temperature (Tx). The plurality of particles may be subjected to a spark plasma sintering process at the crystallization temperature or less under a compression pressure of 200 MPa or more, to provide a bulk Fe-based sintered metal soft magnetic material of metallic glass, which has a high density, a single phase structure of metallic glass in an as-sintered state, excellent soft magnetic characteristics applicable to a core of a magnetic head, a transformer or a motor, and a high specific resistance.