Provided is an Fe—Pt—BN-based sputtering target that has a high relative density and that suppresses particle generation.

The Fe—Pt—BN-based sputtering target has, as a residue after dissolution in aqua regia measured by a procedure below, the particle size distribution in which D90 is 5.5 μm or less and a proportion of fine particles smaller than 1 μm is 35% or less. The procedure includes: (1) cutting out an about 4 mm-square sample piece from the sputtering target, followed by pulverizing to prepare a pulverized product; (2) classifying the pulverized product using sieves of 106 μm and 300 μm in opening size and collecting a powder that has passed through the 300 μm sieve and remained on the 106 μm sieve; (3) immersing the powder in aqua regia heated to 200° C. to prepare a residue-containing solution in which the powder has been dissolved; (4) filtering the residue-containing solution through a 5A filter paper specified in JIS P 3801 and drying a residue on the filter paper at 80° C. to prepare a residue powder; (5) dispersing the residue powder in water containing a surfactant to prepare a sample solution; and (6) setting the sample solution in a particle size analyzer and measuring the particle size distribution.

Provided is an Fe—Pt—BN-based sputtering target that has a high relative density and that suppresses particle generation.

The Fe—Pt—BN-based sputtering target has, as a residue after dissolution in aqua regia measured by a procedure below, the particle size distribution in which D90 is 5.5 μm or less and a proportion of fine particles smaller than 1 μm is 35% or less. The procedure includes: (1) cutting out an about 4 mm-square sample piece from the sputtering target, followed by pulverizing to prepare a pulverized product; (2) classifying the pulverized product using sieves of 106 μm and 300 μm in opening size and collecting a powder that has passed through the 300 μm sieve and remained on the 106 μm sieve; (3) immersing the powder in aqua regia heated to 200° C. to prepare a residue-containing solution in which the powder has been dissolved; (4) filtering the residue-containing solution through a 5A filter paper specified in JIS P 3801 and drying a residue on the filter paper at 80° C. to prepare a residue powder; (5) dispersing the residue powder in water containing a surfactant to prepare a sample solution; and (6) setting the sample solution in a particle size analyzer and measuring the particle size distribution.

An improved atomized powder metal material containing an increased amount of free graphite after heat treatment and/or sintering is provided. The powder metal material is typically a ferrous alloy and includes carbon in an amount of 1.0 wt. % to 6.5 wt. % and silicon in an amount of 0.1 wt. % to 6.0 wt. %, based on the total weight of the powder metal material. The powder metal material can also include various other alloying elements, for example at least one of nickel (Ni), cobalt (Co), copper (Cu), tin (Sn), aluminum (Al), sulfur (S), phosphorous (P), boron (B), nitrogen (N), chromium (Cr), manganese (Mn), molybdenum (Mo), vanadium (V), niobium (Nb), tungsten (W), titanium (Ti), tantalum (Ta) zirconium (Zr), zinc (Zn), strontium (Sr), calcium (Ca), barium (Ba) magnesium (Mg), lithium (Li), sodium (Na), and potassium (K).

An improved atomized powder metal material containing an increased amount of free graphite after heat treatment and/or sintering is provided. The powder metal material is typically a ferrous alloy and includes carbon in an amount of 1.0 wt. % to 6.5 wt. % and silicon in an amount of 0.1 wt. % to 6.0 wt. %, based on the total weight of the powder metal material. The powder metal material can also include various other alloying elements, for example at least one of nickel (Ni), cobalt (Co), copper (Cu), tin (Sn), aluminum (Al), sulfur (S), phosphorous (P), boron (B), nitrogen (N), chromium (Cr), manganese (Mn), molybdenum (Mo), vanadium (V), niobium (Nb), tungsten (W), titanium (Ti), tantalum (Ta) zirconium (Zr), zinc (Zn), strontium (Sr), calcium (Ca), barium (Ba) magnesium (Mg), lithium (Li), sodium (Na), and potassium (K).

Magnetic particles, each including a core made of a magnetic material, and an insulating coating film which covers a surface of the core made of a magnetic material. The insulating coating film is formed of a sol-gel reaction product of a mixture containing a metal alkoxide and an organic phosphoric acid or a salt thereof.

Magnetic particles, each including a core made of a magnetic material, and an insulating coating film which covers a surface of the core made of a magnetic material. The insulating coating film is formed of a sol-gel reaction product of a mixture containing a metal alkoxide and an organic phosphoric acid or a salt thereof.

Provided are: an alloy member that is excellent in homogeneity of both the alloy composition and microstructure and excellent in shape controllability and includes a high entropy alloy having high mechanical properties and high corrosion resistance, a process for producing the same, and a product including the alloy member. In the present invention, the alloy member having a chemical composition comprising elements of Co, Cr, Fe, Ni, and Ti each in an amount within a range of 5 atomic % or more and 35 atomic % or less and Mo in an amount within a range of more than 0 atomic % and 8 atomic % or less, the reminder consisting of unavoidable impurities, wherein ultrafine grains having an average grain diameter of 100 nm or less are dispersed and precipitated in a parent phase crystal.

Provided are: an alloy member that is excellent in homogeneity of both the alloy composition and microstructure and excellent in shape controllability and includes a high entropy alloy having high mechanical properties and high corrosion resistance, a process for producing the same, and a product including the alloy member. In the present invention, the alloy member having a chemical composition comprising elements of Co, Cr, Fe, Ni, and Ti each in an amount within a range of 5 atomic % or more and 35 atomic % or less and Mo in an amount within a range of more than 0 atomic % and 8 atomic % or less, the reminder consisting of unavoidable impurities, wherein ultrafine grains having an average grain diameter of 100 nm or less are dispersed and precipitated in a parent phase crystal.

A pre-alloyed powder having a composition consisting of, in weight % (wt. %): C, 0.02-0.04; Si, 0.1-0.4; Mn, 0.1-0.5; Cr, 11-13; Ni, 7-10; Cr+Ni, 19-23; Mo, 1-25; Al, 1.4-2.0; N, 0.01-0.75. Optionally, the pre-alloyed powder contains: Cu, 0.05-2.5; B, 0.002-2.0; S, 0.01-0.25; Nb, 0.01 max; Ti, 2 max; Zr, 2, max; Ta, 2 max; Hf, 2 max; Y, 2 max; Ca, 0.0003-0.009; Mg, 0.01 max; O, 0.003-0.80; and REM, 0.2 max. Fe and impurities comprise the balance.

An alloy powder having an alloy composition represented by Fe.sub.100-a-b-c-d-e-fCu.sub.aSi.sub.bB.sub.cCr.sub.dSn.sub.eC.sub.f, wherein a, b, c, d, e and f are atomic % meeting 0.80≤a≤1.80, 2.00≤b≤10.00, 11.00≤c≤17.00, 0.10≤d≤2.00, 0.01≤e≤1.50, and 0.10≤f≤0.40.