Abstract: Provided is an alloy material in which coarse growth or aggregation and precipitation of an undesired intermetallic compound phase can be suppressed, an alloy product formed of the alloy material, and a mechanical device including the alloy product. The alloy material according to the present invention includes: 5 at % or more and 40 at % or less of each of Co, Cr, Fe, and Ni; more than 0 at % and 8 at % or less of Mo; 1 at % or more and less than 8 at % of Ti; more than 0 at % and 4 at % or less of at least one kind of Ta or Nb; and a remainder consisting of unavoidable impurities, in which a total content of Ti and the at least one kind of Ta or Nb is 3 at % or more and 8 at % or less. In the alloy product formed of the alloy material, a total occupancy of ? phase and Laves phase precipitates having a size of 1 ?m or more is suppressed to be 5 area % or less.

Abstract: A Ni-based alloy powder includes, in mass %, 3.5-4.5% of Al, 0.8-4.0% of Cr, 0.0100% or less of C, 0.001-0.050% of O, 0.0001-0.0150% of N, and the balance Ni with inevitable impurities.

Abstract: A metallic laminate shaped flow path member has both a surface roughness of a flow path inner surface and corrosion resistance at such a level as to be utilizable as a flow path member for use in a supply line for a corrosive fluid in a semiconductor device manufacturing apparatus. A metallic substrate constituting the metallic laminate shaped flow path member has surface irregularities, the inner surface of the flow path of the metallic laminate shaped flow path member is formed with a glass coating layer in such a manner as to fill at least recessed regions of the surface irregularities of the metallic substrate, and the glass coating layer includes at least one of a layer of a P2O5—ZnO—Al2O3 based glass, a layer of a Bi2O3—ZnO—B2O3 based glass, and a layer of an SiO2—B2O3—Na2O based glass.

Abstract: An additive manufacturing article according to the present invention is composed of an Ni-based alloy that contains Cr and Mo, while containing Ni in the largest amount in terms of the mass ratio; and an oxide film that is mainly composed of Cr is formed in a part or the entirety of the surface. This oxide film that is mainly composed of Cr has a region wherein the O content is higher in comparison to that in the inner part, and the Cr content is higher than the Ni content. It is preferable that this oxide film has a thickness of 1-20 nm from the surface; and it is also preferable that this oxide film is formed so as to be suited to a corrosive environment contact surface. In addition, this oxide film is able to be formed during additive manufacturing of the additive manufacturing article.

Abstract: To provide a Ni-based corrosion resistant alloy powder suitable for additive manufacturing and a manufacturing method using this powder for manufacturing an additive manufacturing product that has excellent corrosion resistance and few defects. This Ni-based corrosion resistant alloy powder for additive manufacturing has a component composition which contains, in mass %, Cr: 14.5-24.5%, Mo: 12.0-23.0%, Fe: 0.01-7.00%, Co: 0.001-2.500%, Mg: 0.010% or less, N: 0.040% or less, Mn: 0.001-0.50%, Si: 0.001-0.200%, Al: greater than 0-0.50%, Ti: 0.001-0.500%, Cu: 0.250% or less, V: 0.001-0.300%, B: 0.0001-0.0050%, Zr: 0.0001-0.0200% and O: 0.0010-0.0300%, the remainder being Ni and unavoidable impurities; the C, S and P contained as the aforementioned unavoidable impurities include less than 0.05% of C, less than 0.01% of S and less than 0.01% of P, wherein the powder has a particle distribution in which d10 is 15-100 ?m, d50 is 30-250 ?m and d90 is 50-480 ?m.

Abstract: The invention addresses the problem of providing an Ni-based corrosion resistant alloy powder that is suitable for additive manufacturing, and a manufacturing method for an additive manufacturing product using the powder, the product having excellent corrosion-resistance and few defects. The invention consists of an Ni-based alloy powder having a component composition, in percentages by mass, of 14.5-23.9% Cr, 12.0-23.0% Mo, 0.01-7.00% Fe, 0.001-2.500% Co, 0.010% or less Mg, 0.040% or less N, 0.001-0.50% Mn, 0.001-0.200% Si, more than 0-0.50% Al, 0.001-0.500% Ti, 0.250% or less Cu, 0.001-0.300% V, 0.0001-0.0050% B, 0.0001-0.0200% Zr, and 0.0010-0.0300% O, the remainder being Ni, and contained as inevitable impurities, less than 0.05% C, less than 0.01% S, and less than 0.01% P. The angle of repose of the Ni-based alloy powder is 48 degrees or less.

Abstract: An additively manufactured body including a Ni—Cr—Mo based alloy that is excellent in mechanical properties. An additively manufactured body of the present invention is a member including a Ni-based alloy that includes Ni at the largest content by a mass ratio, and Cr and Mo at second largest contents by a mass ratio; and includes segregation of Mo in at least a part of a crystal grain(s). This crystal grain(s) has columnar cell structures (CL), and preferably the segregation of Mo exists between adjacent cell structures. A tensile strength of 850 MPa or higher and an elongation of 50% or higher can be obtained.

Abstract: Provided is a Ni-based corrosion-resistant alloy powder preferable for additive manufacturing, and provided are an additive manufacturing product and a member for semiconductor production devices having excellent corrosion resistance with few defects by using this powder. A Ni-based corrosion-resistant alloy powder for additive manufacturing comprises in mass %: 14.5 to 24.0% of Cr; 12.0 to 23.0% of Mo; 0.01 to 7.00% of Fe; 0.001 to 2.500% of Co; 0.0001 to 0.0050% of Mg; 0.001 to 0.040% of N; 0.005 to 0.50% of Mn; 0.001 to 0.200% of Si; 0.01 to 0.50% of Al; 0.001 to 0.500% of Ti; 0.001 to 0.250% of Cu; 0.001 to 0.300% of V; 0.0001 to 0.0050% of B; 0.0001 to 0.0100% of Zr; and 0.0010 to 0.0300% of O, and the balance of Ni with inevitable impurities. The inevitable impurities comprise less than 0.05% of C; less than 0.01% of S; and less than 0.01% of P.

Abstract: A vertebral body spacer of the present invention is used by being inserted between a vertebral body and a vertebral body (intervertebral space). The vertebral body spacer has a block body constituted of titanium or a titanium alloy as a main component thereof, and provided with a pair of contact surfaces to be made contact with the vertebral body and the vertebral body. The block body includes dense sheets having a dense part on at least a surface thereof and porous sheets having a porous part on at least a surface thereof. The porous part has a larger porosity than a porosity of the dense part. Each of the porous sheets is sandwiched between the pair of dense sheets. According to the present invention, it is possible to maintain an appropriate size between the vertebral bodies (intervertebral space).

Abstract: A vertebral body spacer of the present invention is used by being inserted between a vertebral body and a vertebral body (intervertebral space). The vertebral body spacer has a block body constituted of titanium or a titanium alloy as a main component thereof, and provided with a pair of contact surfaces to be made contact with the vertebral body and the vertebral body. The block body includes a frame-shaped dense part and a porous part provided inside the dense part, and a porosity of at least a surface of the porous part is larger than a porosity of the dense part. According to the present invention, it is possible to maintain an appropriate size between the vertebral bodies (intervertebral space).

Abstract: A vertebral body spacer of the present invention is used by being inserted between a vertebral body and a vertebral body (intervertebral space). The vertebral body spacer has a block body constituted of titanium or a titanium alloy as a main component thereof, and provided with a pair of contact surfaces to be made contact with the vertebral body and the vertebral body. The block body includes a frame-shaped dense part and a porous part provided inside the dense part, and a porosity of at least a surface of the porous part is larger than a porosity of the dense part. According to the present invention, it is possible to maintain an appropriate size between the vertebral bodies (intervertebral space).

Abstract: Porous implant material having a plurality of metal bodies having different porosity rates which are bonded with each other at bonded-boundary surface F parallel to a first direction, wherein: a bonded body of the metal bodies has an entire porosity rate of 50% to 92%; the metal body having higher porosity rate is a porous metal body having a three-dimensional network formed from a continuous skeleton in which a plurality of pores are interconnected; the metal body having lower porosity rate has a porosity rate of 0 to 50% and an area-occupation rate of 0.5% to 50% in a cross-section surface orthogonal to an axial direction which agrees with the first direction along the bonded-boundary surface; and a compressive strength compressing in a direction parallel to the bonded-boundary surface is 1.4 times to 10 times of a compressive strength compressing in a direction orthogonal to the bonded-boundary surface.

Abstract: A plurality of porous metal bodies which are bonded with each other at bonded-boundary surfaces parallel to a first direction, each of the porous metal bodies has a three-dimensional network structure formed from a continuous skeleton in which a plurality of pores are interconnected so as to have a porosity rate different from another porous metal body, the pores formed in at least the porous metal body having the higher porosity rate are formed to have flat shapes which are long along a direction parallel to the bonded-boundary surface and short along a direction orthogonal to the bonded-boundary surface, an entire porosity rate of a bonded body of the porous metal bodies is 50% to 92%, a compressive strength compressing in the direction parallel to the bonded-boundary surface is 1.4 times to 5 times of a compressive strength compressing in the direction orthogonal to the bonded-boundary surface.

Abstract: A vertebral body spacer of the present invention is used by being inserted between a vertebral body and a vertebral body (intervertebral space). The vertebral body spacer has a block body constituted of titanium or a titanium alloy as a main component thereof, and provided with a pair of contact surfaces to be made contact with the vertebral body and the vertebral body. The block body includes needle parts formed into a needle shape having both end portions and a porous part having through holes passing through the porous part in a thickness direction thereof, and a porosity of at least a surface of the porous part is larger than a porosity of each of the needle parts. The needle parts are inserted into the through holes so that the both end portions are projected from the contact surfaces.

Abstract: A vertebral body spacer of the present invention is used by being inserted between a vertebral body and a vertebral body (intervertebral space). The vertebral body spacer has a block body constituted of titanium or a titanium alloy as a main component thereof, and provided with a pair of contact surfaces to be made contact with the vertebral body and the vertebral body. The block body includes needle parts formed into a needle shape having both end portions and a porous part having through holes passing through the porous part in a thickness direction thereof, and a porosity of at least a surface of the porous part is larger than a porosity of each of the needle parts. The needle parts are inserted into the through holes so that the both end portions are projected from the contact surfaces.

Abstract: A vertebral body spacer of the present invention is used by being inserted between a vertebral body and a vertebral body (intervertebral space). The vertebral body spacer has a block body constituted of titanium or a titanium alloy as a main component thereof, and provided with a pair of contact surfaces to be made contact with the vertebral body and the vertebral body. The block body includes a frame-shaped dense part and a porous part provided inside the dense part, and a porosity of at least a surface of the porous part is larger than a porosity of the dense part. According to the present invention, it is possible to maintain an appropriate size between the vertebral bodies (intervertebral space).

Abstract: A vertebral body spacer of the present invention is used by being inserted between a vertebral body and a vertebral body (intervertebral space). The vertebral body spacer has a block body constituted of titanium or a titanium alloy as a main component thereof, and provided with a pair of contact surfaces to be made contact with the vertebral body and the vertebral body. The block body includes needle parts formed into a needle shape having both end portions and a porous part having through holes passing through the porous part in a thickness direction thereof, and a porosity of at least a surface of the porous part is larger than a porosity of each of the needle parts. The needle parts are inserted into the through holes so that the both end portions are projected from the contact surfaces.

Abstract: A vertebral body spacer of the present invention is used by being inserted between a vertebral body and a vertebral body (intervertebral space). The vertebral body spacer has a block body constituted of titanium or a titanium alloy as a main component thereof, and provided with a pair of contact surfaces to be made contact with the vertebral body and the vertebral body. The block body includes dense sheets having a dense part on at least a surface thereof and porous sheets having a porous part on at least a surface thereof. The porous part has a larger porosity than a porosity of the dense part. Each of the porous sheets is sandwiched between the pair of dense sheets. According to the present invention, it is possible to maintain an appropriate size between the vertebral bodies (intervertebral space).

Abstract: A plurality of porous metal bodies which are bonded with each other at bonded-boundary surfaces parallel to a first direction, each of the porous metal bodies has a three-dimensional network structure formed from a continuous skeleton in which a plurality of pores are interconnected so as to have a porosity rate different from another porous metal body, the pores formed in at least the porous metal body having the higher porosity rate are formed to have flat shapes which are long along a direction parallel to the bonded-boundary surface and short along a direction orthogonal to the bonded-boundary surface, entire porosity rate of a bonded body of the porous metal bodies is 50% to 92%, a compressive strength compressing in the direction parallel to the bonded-boundary surface is 1.4 times to 5 times of a compressive strength compressing in the direction orthogonal to the bonded-boundary surface.

Abstract: Providing porous implant material having a strength property approximate to human bone, without arising stress shielding, and which is possible to maintain sufficient bound strength with human bone. Porous implant material according to the present invention has a plurality of porous metal bodies 4 which are bonded with each other at bonded-boundary surface F parallel to a first direction, wherein each the porous metal body has a three-dimensional network structure formed from a continuous skeleton 2 in which a plurality of pores 3 are interconnected, a porosity rate is 50% to 92%, and a compressive strength compressing in a direction parallel to the bonded-boundary surface F is 1.4 times to 5 times of a compressive strength compressing in a direction orthogonal to the bonded-boundary surface F.