A soft magnetic alloy powder has a specific composition in which a Co content is large. A soft magnetic alloy powder has a glass transition point Tg and a melting point Tm, 900° C.≤Tm≤1200° C. is satisfied, or when coercivity when applying a pressure X.sub.P to a soft magnetic alloy powder is set as Y.sub.H, and a straight line obtained by linearly approximating a relationship between X.sub.P and Y.sub.H by a method of least squares is set as Y.sub.H=kX.sub.P+1, k (unit: Oe/MPa) satisfies 0≤k≤0.00100.

Methods for the fabrication of metal strain wave gear flexsplines using a specialized metal additive manufacturing technique are provided. The method allows the entire flexspline to be metal printed, including all the components: the output surface with mating features, the thin wall of the cup, and the teeth integral to the flexspline. The flexspline may be used directly upon removal from the building tray.

Methods for the fabrication of metal strain wave gear flexsplines using a specialized metal additive manufacturing technique are provided. The method allows the entire flexspline to be metal printed, including all the components: the output surface with mating features, the thin wall of the cup, and the teeth integral to the flexspline. The flexspline may be used directly upon removal from the building tray.

A system and a method for fabrication of bulk nanocrystal alloys is provided. The method may include subjecting powders of at least one material to an ultrasonic vibration at a first amplitude. The method may also include heating the powders in response to the ultrasonic vibration at a first temperature elevating rate corresponding to the first amplitude, and treating the powders in a temperature range corresponding to the first temperature elevating rate. The method may further include obtaining a bulk material composed of a plurality of crystal grains, the plurality of crystal grains having an average linear dimension equal to or larger than 10 nm. The method may further include obtaining a bulk material with amorphous structure with sufficient temperature cooling rate.

A system and a method for fabrication of bulk nanocrystal alloys is provided. The method may include subjecting powders of at least one material to an ultrasonic vibration at a first amplitude. The method may also include heating the powders in response to the ultrasonic vibration at a first temperature elevating rate corresponding to the first amplitude, and treating the powders in a temperature range corresponding to the first temperature elevating rate. The method may further include obtaining a bulk material composed of a plurality of crystal grains, the plurality of crystal grains having an average linear dimension equal to or larger than 10 nm. The method may further include obtaining a bulk material with amorphous structure with sufficient temperature cooling rate.

This application relates to an aluminum-based amorphous metal particles, a conductive Ink and OLED cathode including the aluminum-based amorphous metal particles, and a method of manufacturing the aluminum-based amorphous metal particles. In one aspect, the amorphous metal particles are represented by a formula Al.sub.xLi.sub.yNi.sub.zY.sub.wCo.sub.v. Here, x, y, z, w, and v denote an atomic ratio, and satisfy the following relationships: 75.0≤x≤90.0, 3.0<y≤7.0, 1.0≤z≤7.0, 2.0≤w≤10.0, 0.0≤v≤5.5, and x+y+z+w+v=100.

An amorphous soft magnetic alloy of the formula (Fe.sub.1-αTM.sub.α).sub.100-w-x-y-zP.sub.wB.sub.xL.sub.ySi.sub.z Ti.sub.pC.sub.qMn.sub.rCu.sub.s, wherein TM is Co or Ni; L is Al, Cr, Zr, Mo or Nb; 0≤α≤0.3, 2≤w≤18 at %, 2≤x≤18 at %, 15≤w+x≤23 at %, 1<y≤5 at %, 0≤z≤4 at %; p, q, r, and s represents an addition ratio such that the total mass of Fe, TM, P, B, L and Si is 100, and 0≤p≤0.3, 0≤q≤0.5, 0≤r≤2, 0≤s≤1 and r+s>0; the composition fulfills one of the following conditions: L is Cr, Zr, Mo or Nb; or L is a combination of Al and Cr, Zr, Mo or Nb, wherein 0<Al≤5 at %, 1≤Cr≤4 at %, 0<Zr≤5 at %, 2≤Mo≤5 at %, and 2≤Nb≤5 at %; the alloy has a crystallization start temperature (Tx) which is 550° C. or less, a glass transition temperature (Tg) which is 520° C. or less, and a supercooled liquid region represented by ΔTx=Tx−Tg, which is 20° C. or more.

An amorphous soft magnetic alloy of the formula (Fe.sub.1-αTM.sub.α).sub.100-w-x-y-zP.sub.wB.sub.xL.sub.ySi.sub.z Ti.sub.pC.sub.qMn.sub.rCu.sub.s, wherein TM is Co or Ni; L is Al, Cr, Zr, Mo or Nb; 0≤α≤0.3, 2≤w≤18 at %, 2≤x≤18 at %, 15≤w+x≤23 at %, 1<y≤5 at %, 0≤z≤4 at %; p, q, r, and s represents an addition ratio such that the total mass of Fe, TM, P, B, L and Si is 100, and 0≤p≤0.3, 0≤q≤0.5, 0≤r≤2, 0≤s≤1 and r+s>0; the composition fulfills one of the following conditions: L is Cr, Zr, Mo or Nb; or L is a combination of Al and Cr, Zr, Mo or Nb, wherein 0<Al≤5 at %, 1≤Cr≤4 at %, 0<Zr≤5 at %, 2≤Mo≤5 at %, and 2≤Nb≤5 at %; the alloy has a crystallization start temperature (Tx) which is 550° C. or less, a glass transition temperature (Tg) which is 520° C. or less, and a supercooled liquid region represented by ΔTx=Tx−Tg, which is 20° C. or more.

A soft magnetic powder has a composition represented by Fe.sub.100-a-b-c-d-e-fCu.sub.aSi.sub.bB.sub.cM.sub.dM′.sub.eX.sub.f (at %) (wherein M is at least one element selected from the group consisting of Nb and the like, M′ is at least one element selected from the group consisting of V and the like, X is at least one element selected from the group consisting of C and the like, and 0.1≤a≤3, 0<b≤30, 0<c≤25, 5≤b+c≤30, 0.1≤d≤30, 0≤e≤10, and 0≤f≤10). The powder contains a crystalline structure having a particle diameter of 1 nm or more and 30 nm or less in an amount of 40 vol % or more. When the apparent density is assumed to be 100, the tap density is 103 or more and 130 or less.

A soft magnetic powder has a composition represented by Fe.sub.100-a-b-c-d-e-fCu.sub.aSi.sub.bB.sub.cM.sub.dM′.sub.eX.sub.f (at %) (wherein M is at least one element selected from the group consisting of Nb and the like, M′ is at least one element selected from the group consisting of V and the like, X is at least one element selected from the group consisting of C and the like, and 0.1≤a≤3, 0<b≤30, 0<c≤25, 5≤b+c≤30, 0.1≤d≤30, 0≤e≤10, and 0≤f≤10). The powder contains a crystalline structure having a particle diameter of 1 nm or more and 30 nm or less in an amount of 40 vol % or more. When the apparent density is assumed to be 100, the tap density is 103 or more and 130 or less.