A nickel-based alloy for powder has the contents (in wt.%): C 0.01-0.5%, S max. 0.5%, in particular max. 0.03%, Cr 20-25%, Ni radical Mn max. 1%, Si max. 1%, Mo up to 10%, Ti 0.25-0.6%, Nb up to 5.5%, Cu up to 5%, in particular up to 0.5%, Fe up to 25%, P max. 0.03%, in particular max. 0.02%, Al 0.8-1.5%, V max. 0.6%, Zr max. 0.12%, in particular max. 0.1%, Co up to 15%, B 0.001-0.125% O >0.00001-0.1% and impurities dependent on production. The carbon to boron ratio (C/B) is between 4 and 25.

A problem to be solved by the present invention is to provide an alloy that is suitable for a sputtering target material and easy to be produced by an atomization method, and, in order to solve the problem. The present invention provides an alloy containing: at least one selected from Co and Fe; B; C; and the balance being unavoidable impurities. A concentration of C in the alloy is 50 ppm or more and 950 ppm or less, and where a composition of Co, Fe and B, excluding C and the unavoidable impurities, in the alloy is represented by the general formula: (Co.sub.X-Fe.sub.100-X).sub.100-Y-B.sub.Y, where X is 0 or more and 100 or less, and Y is 10 or more and 65 or less.

A problem to be solved by the present invention is to provide an alloy that is suitable for a sputtering target material and easy to be produced by an atomization method, and, in order to solve the problem. The present invention provides an alloy containing: at least one selected from Co and Fe; B; C; and the balance being unavoidable impurities. A concentration of C in the alloy is 50 ppm or more and 950 ppm or less, and where a composition of Co, Fe and B, excluding C and the unavoidable impurities, in the alloy is represented by the general formula: (Co.sub.X-Fe.sub.100-X).sub.100-Y-B.sub.Y, where X is 0 or more and 100 or less, and Y is 10 or more and 65 or less.

A dust core including soft magnetic particles having pure iron or an iron alloy and a grain boundary layer present between adjacent soft magnetic particles. The grain boundary layer has a main phase and a barrier phase. The main phase having a spinel-type ferrite of a metal element. The metal element serves as a divalent cation. The barrier phase having one or more of Cu, Sn, or Co. The dust core can be obtained by using a powder for magnetic cores including soft magnetic particles coated with a film in which a first ferrite and a second ferrite coexist. The barrier phase blocks the Fe diffusion from the soft magnetic particles and suppresses the deterioration of the main phase having the second ferrite responsible for the insulating property.

A dust core including soft magnetic particles having pure iron or an iron alloy and a grain boundary layer present between adjacent soft magnetic particles. The grain boundary layer has a main phase and a barrier phase. The main phase having a spinel-type ferrite of a metal element. The metal element serves as a divalent cation. The barrier phase having one or more of Cu, Sn, or Co. The dust core can be obtained by using a powder for magnetic cores including soft magnetic particles coated with a film in which a first ferrite and a second ferrite coexist. The barrier phase blocks the Fe diffusion from the soft magnetic particles and suppresses the deterioration of the main phase having the second ferrite responsible for the insulating property.

The present disclosure discloses a preparation method of a multi-functional marine engineering alloy. Through the coupling of a multi-principal alloy structure, structural entropy, and temperature and powder metallurgy and heat treatment, mutual solubility between elements and free energy of an alloy system are regulated, Cu grain boundary segregation is eliminated, and uniform and dispersed nano-precipitation of the anti-fouling element Cu in corrosion-resistant and high-plasticity multi-principal alloys is realized. The preparation method is simple and controllable to operate, and the prepared material has plasticity higher than 75%, high yield strength, excellent corrosion resistance and anti-fouling property, and has important application prospects in the field of marine engineering.

A nickel-based alloy for powder has the contents (in wt. %): C 0.01-0.5%, S max. 0.5%, in particular max. 0.03%, Cr 20-25%, Ni radical Mn max. 1%, Si max. 1%, Mo up to 10%, Ti 0.25-0.6%, Nb up to 5.5%, Cu up to 5%, in particular up to 0.5%, Fe up to 25%, P max. 0.03%, in particular max. 0.02%, Al 0.8-1.5%, V max. 0.6%, Zr max. 0.12%, in particular max. 0.1%, Co up to 15%, B 0.001-0.125% O >0.00001-0.1% and impurities dependent on production. The carbon to boron ratio (C/B) is between 4 and 25.

A nickel-based alloy for powder has the contents (in wt. %): C 0.01-0.5%, S max. 0.5%, in particular max. 0.03%, Cr 20-25%, Ni radical Mn max. 1%, Si max. 1%, Mo up to 10%, Ti 0.25-0.6%, Nb up to 5.5%, Cu up to 5%, in particular up to 0.5%, Fe up to 25%, P max. 0.03%, in particular max. 0.02%, Al 0.8-1.5%, V max. 0.6%, Zr max. 0.12%, in particular max. 0.1%, Co up to 15%, B 0.001-0.125% O >0.00001-0.1% and impurities dependent on production. The carbon to boron ratio (C/B) is between 4 and 25.

An austenitic stainless steel alloy having antibacterial properties, corrosion resistance properties, and good hardness and strength is provided. A method of manufacturing by gas atomization, metal additive manufacturing, and heat treatment is also provided. The stainless steel alloy composition and powder consisting of chromium (Cr), molybdenum (Mo), manganese (Mn), nickel (Ni), copper (Cu), silicon (Si), nitrogen (N), carbon (C) and iron (Fe) is described. The alloy can be processed into spherical powder by gas atomization or other methods suitable for metal additive manufacturing or metal 3D printing. The powder can be processed by metal additive manufacturing into articles. Heat treatment promotes the formation of copper nanoprecipitates leading to excellent antibacterial properties and good mechanical properties. The constituent elements of the alloy provide for good corrosion resistance.

An austenitic stainless steel alloy having antibacterial properties, corrosion resistance properties, and good hardness and strength is provided. A method of manufacturing by gas atomization, metal additive manufacturing, and heat treatment is also provided. The stainless steel alloy composition and powder consisting of chromium (Cr), molybdenum (Mo), manganese (Mn), nickel (Ni), copper (Cu), silicon (Si), nitrogen (N), carbon (C) and iron (Fe) is described. The alloy can be processed into spherical powder by gas atomization or other methods suitable for metal additive manufacturing or metal 3D printing. The powder can be processed by metal additive manufacturing into articles. Heat treatment promotes the formation of copper nanoprecipitates leading to excellent antibacterial properties and good mechanical properties. The constituent elements of the alloy provide for good corrosion resistance.