Abstract: An outlet seal connects a combustor that combusts a fuel to generate combustion gas and a shroud for a stator. The outlet seal has a gas path surface, a first connection section, and a second connection section. The shape of the gas path surface in a cross section perpendicular to an axis is an arc centered on the axis. The first connection section is formed at a first side in an axial direction and is connected to the combustor. The second connection section is formed at a second side in the axial direction and is connected to the shroud. The gas path surface has an inclined surface that is inclined with respect to the axis in a cross section including the axis, such that the flow-path area of a combustion-gas flow path is reduced toward the second side.

Abstract: A surface-coated cutting tool according to the present invention includes a tool body and a hard coating layer including a complex carbonitride layer containing a small amount of chlorine and (Ti(1-x)ZrxyHfx(1-y))(N(1-z)Cz) (0.10?x?0.90, 0<y?1.0, 0.08<z<0.60), a ZrHf and C content ratios in cycles, a cycle distance between a maximum ZrHf content point and an adjacent minimum ZrHf content point and a cycle distance between a maximum C content point and an adjacent minimum C content point are 5 to 100 nm, an average value of content ratio differences ?x and ?z is 0.02 or more, a distance between the maximum ZrHf content point and the maximum C content point is ? or less of the distance between a maximum content point and a minimum content point of adjacent ZrHf components, and a composition fluctuation structure is 10% or more.

Abstract: A plurality of cooling passages extending in an axial direction are formed in a transition piece so as to be aligned in a circumferential direction and the axial direction. One or more downstream side passages are formed in a downstream side region (Rd) within one circumferential region. One or more upstream side passages are formed in an upstream side region Ru within the circumferential region. The total cross-sectional area per unit circumferential length of the one or more downstream side passages is larger than the total cross-sectional area per unit circumferential length of the one or more upstream side passages.

Abstract: An outlet seal connects a combustor that combusts a fuel to generate combustion gas and a shroud for a stator. The outlet seal has a gas path surface, a first connection section, and a second connection section. The shape of the gas path surface in a cross section perpendicular to an axis is an arc centered on the axis. The first connection section is formed at a first side in an axial direction and is connected to the combustor. The second connection section is formed at a second side in the axial direction and is connected to the shroud. The gas path surface has an inclined surface that is inclined with respect to the axis in a cross section including the axis, such that the flow-path area of a combustion-gas flow path is reduced toward the second side.

Abstract: This surface-coated cutting tool is a surface-coated cutting tool having a hard coating layer formed on a surface of a tool body in which the hard coating layer includes at least one orientational Ti compound layer made of a rock salt-type cubic crystal structure containing 35 at % or more of Ti and 30 at % or more of N, a maximum TC value (TC max) is 2.5 or more, and, in the case of measuring crystal orientations, in a plane parallel to the surface of the tool body, of crystal grains for which a plane having the maximum TC value is perpendicular to the surface of the tool body, a full width at half maximum of ? scan is 30° or less.

Abstract: A first-stage stator vane for a gas turbine includes: a first portion partially defining an airfoil which includes a pressure surface, a suction surface, and a trailing edge; and a second portion positioned at a leading-edge side of the airfoil with respect to the first portion, the second portion having a recess portion or a protruding portion. The recess portion or the protruding portion has a pair of side wall surfaces, and an angle formed between the pair of side wall surfaces is less than 90 angular degrees.

Abstract: A surface-coated cutting tool in which a hard coating layer exhibits exceptional adhesion resistance and anomalous damage resistance is provided. This surface-coated cutting tool includes a tool body composed of a WC based cemented carbide or a TiCN based cermet; and at least one hard coating layer provided on a surface of the tool body, and; 1) the hard coating layer includes at least one complex nitride layer, 2) the complex nitride layer contains 0.001 to 0.030 atom % of chlorine, 3) in the complex nitride layer, an area ratio of longitudinal crystal grains having an aspect ratio equal to or greater than 2 occupying a longitudinal cross section is 50% or more, and 4) a layer thickness of the complex nitride layer is 0.2 ?m to 20 ?m.

Abstract: A surface-coated cutting tool according to the present invention includes a tool body and a hard coating layer including a complex carbonitride layer containing a small amount of chlorine and (Ti(1-x)ZrxyHfx(1-y))(N(1-z)Cz) (0.10?x?0.90, 0<y?1.0, 0.08<z<0.60), a ZrHf and C content ratios in cycles, a cycle distance between a maximum ZrHf content point and an adjacent minimum ZrHf content point and a cycle distance between a maximum C content point and an adjacent minimum C content point are 5 to 100 nm, an average value of content ratio differences ?x and ?z is 0.02 or more, a distance between the maximum ZrHf content point and the maximum C content point is ? or less of the distance between a maximum content point and a minimum content point of adjacent ZrHf components, and a composition fluctuation structure is 10% or more.

Abstract: In the surface-coated cutting tool, a Ti compound layer containing at least nitrogen and carbon is formed on a surface of cutting tool substrate, a nitrogen concentration in the Ti compound layer, in a case of being measured in a direction perpendicular to the surface of the cutting tool substrate in a vicinity of a cutting edge, gradually increases as a distance from cutting tool substrate increases within a range of 0.20 ?m from the surface of the cutting tool substrate toward the Ti compound layer, an average concentration gradient of the nitrogen concentration is 20 at %/?m or more and 300 at %/?m or less, and an average nitrogen concentration in the Ti compound layer in the vicinity of the cutting edge is lower than an average nitrogen concentration in the Ti compound layer at a position of a flank face away from the cutting edge by 3 at % or more.

Abstract: A first-stage stator vane for a gas turbine includes: a first portion partially forming an airfoil which includes a pressure surface, a suction surface, and a trailing edge; and a second portion positioned at a leading-edge side of the airfoil with respect to the first portion, the second portion having a recess portion or a protruding portion. The recess portion or the protruding portion of the second portion has a pair of side wall surfaces, and an angle formed between the pair of side wall surfaces is less than 90 angular degrees.

Abstract: A plurality of cooling passages extending in an axial direction are formed in a transition piece so as to be aligned in a circumferential direction and the axial direction. One or more downstream side passages are formed in a downstream side region (Rd) within one circumferential region. One or more upstream side passages are formed in an upstream side region Ru within the circumferential region. The total cross-sectional area per unit circumferential length of the one or more downstream side passages is larger than the total cross-sectional area per unit circumferential length of the one or more upstream side passages.

Abstract: A surface-coated cutting tool in which a hard coating layer exhibits exceptional adhesion resistance and anomalous damage resistance is provided. This surface-coated cutting tool includes a tool body composed of a WC based cemented carbide or a TiCN based cermet; and at least one hard coating layer provided on a surface of the tool body, and; 1) the hard coating layer includes at least one complex nitride layer, 2) the complex nitride layer contains 0.001 to 0.030 atom % of chlorine, 3) in the complex nitride layer, an area ratio of longitudinal crystal grains having an aspect ratio equal to or greater than 2 occupying a longitudinal cross section is 50% or more, and 4) a layer thickness of the complex nitride layer is 0.2 ?m to 20 ?m.

Abstract: A composite sintered body cutting tool, in which tungsten is reduced, is made of a TiCN-based cermet and WC-based cemented carbide. The cutting tool has an angle of less than 90 degrees formed by a rake face and a flank face. The rake face including a cutting edge contains WC-based cemented carbide including 4% to 17% by mass of iron group metal components with a remainder being WC. The thickness of the carbide is 0.05 to 0.3 times the thickness of the composite sintered body. The TiCN-based cermet which is a base body of the cutting tool includes 4% to 25% of the iron group metal components, less than 15% of W, 2% to 15% of Mo, 2% to 10% of Nb, and 0.2% to 2% of Cr. The cermet may contain iron group metal Co and Ni, where, Co/Co+Ni is 0.5 to 0.8.

Abstract: This surface-coated cutting tool is a surface-coated cutting tool having a hard coating layer formed on a surface of a tool body in which the hard coating layer includes at least one orientational Ti compound layer made of a rock salt-type cubic crystal structure containing 35 at % or more of Ti and 30 at % or more of N, a maximum TC value (TC max) is 2.5 or more, and, in the case of measuring crystal orientations, in a plane parallel to the surface of the tool body, of crystal grains for which a plane having the maximum TC value is perpendicular to the surface of the tool body, a full width at half maximum of ? scan is 30° or less.

Abstract: A composite sintered body cutting tool is made of a composite sintered body comprising a TiCN-based cermet layer; and a WC-based cemented carbide layer. The angle between the rake face and the flank face of the cutting tool is 90°. The rake face including a cutting edge of the cutting tool is constituted from the WC-based cemented carbide layer, in which 4 to 17 mass % of an iron group metal component and 75 mass % or more of W are included; and a major hard phase component is WC. The thickness of the WC-based cemented carbide layer is 0.05 to 0.3 times the thickness of the composite sintered body. The TiCN-based cermet layer is constituted from a single layer of a TiCN-based cermet layer, including at least, 4 to 25 mass % of an iron group metal component, less than 15 mass % of W, 2 to 15 mass % of Mo, 2 to 10 mass % of Nb and 0.

Abstract: In the surface-coated cutting tool, a Ti compound layer containing at least nitrogen and carbon is formed on a surface of cutting tool substrate, a nitrogen concentration in the Ti compound layer, in a case of being measured in a direction perpendicular to the surface of the cutting tool substrate in a vicinity of a cutting edge, gradually increases as a distance from cutting tool substrate increases within a range of 0.20 ?m from the surface of the cutting tool substrate toward the Ti compound layer, an average concentration gradient of the nitrogen concentration is 20 at %/?m or more and 300 at %/?m or less, and an average nitrogen concentration in the Ti compound layer in the vicinity of the cutting edge is lower than an average nitrogen concentration in the Ti compound layer at a position of a flank face away from the cutting edge by 3 at % or more.

Abstract: A surface-coated titanium carbonitride-based cermet cutting tool is a surface-coated TiCN-based cermet cutting tool in which a Ti compound layer that is a hard coating layer is deposited as a first layer on the surface of a TiCN-based cermet body containing W and Mo, and a Mo-enriched layer having an average thickness of 0.5 to 10 nm is formed at an interface between a TiCN phase of the body and the hard coating layer.

Abstract: A composite sintered body cutting tool, in which tungsten is reduced, is made of a TiCN-based cermet and WC-based cemented carbide. The cutting tool has an angle of less than 90 degrees formed by a rake face and a flank face. The rake face including a cutting edge contains WC-based cemented carbide including 4% to 17% by mass of iron group metal components with a remainder being WC. The thickness of the carbide is 0.05 to 0.3 times the thickness of the composite sintered body. The TiCN-based cermet which is a base body of the cutting tool includes 4% to 25% of the iron group metal components, less than 15% of W, 2% to 15% of Mo, 2% to 10% of Nb, and 0.2% to 2% of Cr. The cermet may contain iron group metal Co and Ni, where, Co/Co+Ni is 0.5 to 0.8.

Abstract: The present invention provides a method for producing a silver powder, the method being capable of producing a silver powder with high productivity and at low cost, the silver powder having an average particle diameter of 0.3 to 2.0 ?m and a narrow particle size distribution, and provides a silver powder produced by the production method. According to the present invention, the method for producing a silver powder includes: quantitatively and continuously supplying each of a silver solution containing a silver complex and a reductant solution to a flow path; and quantitatively and continuously reducing a silver complex in a reaction solution obtained by mixing the silver solution with the reductant solution in the flow path, wherein the reaction solution is made to contain a dispersant, and also a silver concentration in the reaction solution is adjusted to be in a range of 5 to 75 g/L.

Abstract: The present invention provides a silver powder that has an appropriate viscosity range at the time of paste production, can be easily kneaded, and prevents flake occurrence. The silver powder has a dibutyl phthalate absorption amount, measured by a method of JIS-K6217-4, of 7.0 to 9.5 ml/100 g, and has an oil absorption profile at the time of measurement of the absorption amount, having two peaks, or one peak having a half width of not more than 1.5 ml/100 g.