Abstract: A porous aluminum body having high porosity and a manufacturing method therefor are provided, wherein the porous aluminum body can be manufactured by continuous manufacturing steps. In the present invention, this porous aluminum body includes a plurality of aluminum fibers connected to each other. The aluminum fibers each have a plurality of columnar protrusions formed at intervals on an outer peripheral surface of the aluminum fibers, the columnar protrusions protruding outward from the outer peripheral surface. Adjacent aluminum fibers are integrated with the aluminum fibers and the columnar protrusions.

Abstract: This method for producing porous sintered aluminum Includes: mixing aluminum powder with a sintering aid powder containing titanium to obtain a raw aluminum mixed powder; mixing the raw aluminum mixed powder with a water-soluble resin binder, water, and a plasticizer containing at least one selected from polyhydric alcohols, ethers, and esters to obtain a viscous composition; drying the viscous composition in a state where air bubbles are mixed therein to obtain a formed object prior to sintering; and heating the formed object prior to sintering in a non-oxidizing atmosphere, wherein when a temperature at which the raw aluminum mixed powder starts to melt is expressed as Tm (° C.), a temperature T (° C.) of the heating fulfills Tm?10 (° C.)?T?685 (° C.

Abstract: This method for producing an aluminum composite including porous sintered aluminum, includes: mixing aluminum powder with a sintering aid powder containing either one or both of titanium and titanium hydride to obtain a raw aluminum mixed powder; adding and mixing a water-soluble resin binder, water, a plasticizer containing at least one selected from polyhydric alcohols, ethers, and esters, and a water-insoluble hydrocarbon-based organic solvent containing five to eight carbon atoms into the raw aluminum mixed powder to obtain a viscous composition; shape-forming the viscous composition on an aluminum foil or an aluminum plate and causing the viscous composition to foam to obtain a formed object prior to sintering; and heating the formed object prior to sintering in a non-oxidizing atmosphere to obtain an aluminum composite which includes porous sintered aluminum integrally joined onto the aluminum foil or the aluminum plate, wherein when a temperature at which the raw aluminum mixed powder starts to melt is

Abstract: This method for producing an aluminum composite including porous sintered aluminum, includes: mixing aluminum powder with a sintering aid powder containing either one or both of titanium and titanium hydride to obtain a raw aluminum mixed powder; adding and mixing a water-soluble resin binder, water, a plasticizer containing at least one selected from polyhydric alcohols, ethers, and esters, and a water-insoluble hydrocarbon-based organic solvent containing five to eight carbon atoms into the raw aluminum mixed powder to obtain a viscous composition; shape-forming the viscous composition on an aluminum foil or an aluminum plate and causing the viscous composition to foam to obtain a formed object prior to sintering; and heating the formed object prior to sintering in a non-oxidizing atmosphere to obtain an aluminum composite which includes porous sintered aluminum integrally joined onto the aluminum foil or the aluminum plate, wherein when a temperature at which the raw aluminum mixed powder starts to melt is

Abstract: This method for producing porous sintered aluminum includes: mixing aluminum powder with a sintering aid powder containing titanium to obtain a raw aluminum mixed powder; mixing the raw aluminum mixed powder with a water-soluble resin binder, water, and a plasticizer containing at least one selected from polyhydric alcohols, ethers, and esters to obtain a viscous composition; drying the viscous composition in a state where air bubbles are mixed therein to obtain a formed object prior to sintering; and heating the formed object prior to sintering in a non-oxidizing atmosphere, wherein when a temperature at which the raw aluminum mixed powder starts to melt is expressed as Tm (° C.), a temperature T (° C.) of the heating fulfills Tm?10 (° C.)?T?685 (° C.).

Abstract: This method for producing porous sintered aluminum includes: mixing aluminum powder with a sintering aid powder containing a sintering aid element to obtain a raw aluminum mixed powder; forming the raw aluminum mixed powder into a formed object prior to sintering having pores; and heating the formed object prior to sintering in a non-oxidizing atmosphere to produce porous sintered aluminum, wherein the sintering aid element is titanium, and when a temperature at which the raw aluminum mixed powder starts to melt is expressed as Tm (° C.), then a temperature T (° C.) of the heating fulfills Tm-10 (° C.)?T?685 (° C.).

Abstract: A first tungsten-based sintered material of the present invention comprises Ni in a range from 0.2 to 1.5% by mass, Y2O3 in a range from 0.1 to 1% by mass, and optionally, (a) VC in a range from 0.05 to 0.5% by mass and/or (b) Co and/or Fe in a range from 0.01 to 5% by mass, the balance being tungsten (W); W phases are sinter-bonded; Ni phase or Ni—Co/Fe alloy phase which has the largest particle diameter of 5 ?m or less and Y2O3 having the largest particle diameter of 5 ?m or less are distributed at boundaries of the W phases; and the largest particle diameter of the W phase is 30 ?m or less. The first tungsten-based sintered material is preferably used for a hot press mold for optical glass lenses.

Abstract: A first tungsten-based sintered material of the present invention comprises Ni in a range from 0.2 to 1.5% by mass, Y2O3 in a range from 0.1 to 1% by mass, and optionally, (a) VC in a range from 0.05 to 0.5% by mass and/or (b) Co and/or Fe in a range from 0.01 to 5% by mass, the balance being tungsten (W); W phases are sinter-bonded; Ni phase or Ni—Co/Fe alloy phase which has the largest particle diameter of 5 ?m or less and Y2O3 having the largest particle diameter of 5 ?m or less are distributed at boundaries of the W phases; and the largest particle diameter of the W phase is 30 ?m or less. The first tungsten-based sintered material is preferably used for a hot press mold for optical glass lenses.

Abstract: The object of the present invention is to provide an iron based blended powder for powder metallurgy that can provide a reformable sintered article that has a good sliding property with less variation in the property and a good impact resistance. More specifically, the iron based blended powder for powder metallurgy is formed by blending an atomized alloy iron powder with 0.01% to 1.0% of one or more types of compound powder containing B in terms of B, 1 to 10% of Ni powder, 1 to 6% of Cu powder, 1.3 to 3.0% of graphite powder by weight %, as well as 0.5 to 2.0 parts by weight of a lubricant with respect to 100 parts by weight of the total weight of said powder. The iron based blended powder for powder metallurgy wherein the atomized alloy iron powder comprises, by weight %, 0.03 to 1.00% of Mn, 0.5 to 4.0% of Cr, 0.03 to 0.

Abstract: A shaft having a magnetostrictive sensor measures torque applied to a shaft, as a shaft, without contact and utilizing reverse-magnetostrictive properties of magnetic alloys. The shaft includes a plurality of magnetic alloy layers, and the magnetosensitive torque detector is variously formed by diffusion bonding a magnetostrictive layer with a high magnetostrictive constant onto the shaft surface, by heat treating, adhesive fixation or the like bonding means. Methods for making the shaft are disclosed.