Abstract: A manufacturing method of a semiconductor device includes: forming a plurality of element structures in a form of matrix on a first surface of a semiconductor wafer; forming a crack extending in a thickness direction of the semiconductor wafer along a boundary between the element structures adjacent to each other by pressing a pressing member against a second surface of the semiconductor wafer opposite to the first surface along the boundary; and dividing the semiconductor wafer along the boundary by pressing a dividing member against the semiconductor wafer on a first surface side along the boundary.

Abstract: Provided is a ferrite-based stainless steel welding wire that has excellent oxidation resistance properties and high temperature strength. This ferrite-based stainless steel welding wire has a composition containing, in mass %, 0.001-0.050% of C, 0.01-2.00% of Si, 0.01-1.50% of Mn, 0.030% or less of P, 0.010% or less of S, 16.0-25.0% of Cr, 0.001-0.150% of Ti, 0.020% or less of O, and 0.05% or less of N, further containing at least one selected from 0.01-1.80% of Nb, 0.01-3.60% of Mo, and 0.01-3.60% of W, and satisfying formulae (1), (2), and (3), with a balance being Fe and unavoidable impurities. Formula (1): [Nb]+[Mo]+[W]+0.25[Si]?2.2, formula (2): [Mo]+[W]?3.6, formula (3): [Ti]+[Al]?0.15, where [ ] in the formulae represents the content in mass % of the element indicated in [ ].

Abstract: This wire rod for forming a molten metal is composed of Ti, or a Ti alloy, has an oxygen-enriched layer on a surface thereof, and contains a metal compound having at least one metal selected from the group consisting of an alkali metal and an alkaline earth metal such that the total mass of the alkali metal and/or alkaline earth metal is set to 0.002-0.050 mass % with respect to the total mass of the wire rod. Cracks filled with the metal compound are formed on the surface, and the area proportion of the cracks is 4-25%.

Abstract: Provided is a ceramic substrate having novel characteristics, capable of achieving thermal conductivity equal to or higher than that of a conventional ceramic substrate containing a granular aluminum nitride polycrystal in a base body thereof, and achieving fracture toughness superior to that of a conventional ceramic substrate containing a granular silicon nitride polycrystal in a base body thereof. A ceramic substrate according to the present embodiment contains a fibrous AlN single crystal.

Abstract: The present invention relates to an Ni-based alloy which is excellent in terms of wear resistance and high-temperature corrosion resistance and which includes 0.3?C?1.0 mass %, 36.0?Cr?50.0 mass %, and 3.0?Al?7.0 mass %, with the balance being Ni and unavoidable impurities, and relates to an Ni-based alloy product made of the Ni-based alloy according to the present invention, and methods for producing the Ni-based alloy product.

Abstract: A component for a hot-dip metal plating bath includes a base material and a thermal spray coating disposed to cover a surface of the base material. The base material includes ferritic stainless steel that contains: C: 0.10% to 0.50% by mass; Si: 0.01% to 4.00% by mass; Mn: 0.10% by mass to 3.00% by mass; Cr: 15.0% to 30.0% by mass; a total of Nb, V, Ti, and Ta: 0.9% by mass to 5.0% by mass; and a balance of Fe and unavoidable impurities. The ferritic stainless steel includes a microstructure that includes a ferrite phase as a main phase and a crystallized carbide, an area fraction of a Nb carbide, a Ti carbide, a V carbide, a Ta carbide, and a composite carbide thereof to the crystallized carbide of 30% or more. The hot-dip metal plating bath contains 50% by mass or more of Al.

Abstract: The present invention relates to an Ni-based alloy which is excellent in terms of wear resistance and high-temperature corrosion resistance and which includes 0.3?C?1.0 mass %, 36.0?Cr?50.0 mass %, and 3.0?Al?7.0 mass %, with the balance being Ni and unavoidable impurities, and relates to an Ni-based alloy product made of the Ni-based alloy according to the present invention, and methods for producing the Ni-based alloy product.

Abstract: A method for producing AlN crystals includes using at least one element, excluding Si, that satisfies a condition under which the element forms a compound with neither Al nor N or a condition under which the element forms a compound with any of Al and N provided that the standard free energy of formation of the compound is larger than that of AlN; melting a composition containing at least Al and the element; and reacting the Al vapor with nitrogen gas at a predetermined reaction temperature to produce AlN crystals.

Abstract: A component for a hot-dip metal plating bath includes a base material and a thermal spray coating disposed to cover a surface of the base material. The base material includes ferritic stainless steel that contains: C: 0.10% to 0.50% by mass; Si: 0.01% to 4.00% by mass; Mn: 0.10% by mass to 3.00% by mass; Cr: 15.0% to 30.0% by mass; a total of Nb, V, Ti, and Ta: 0.9% by mass to 5.0% by mass; and a balance of Fe and unavoidable impurities. The ferritic stainless steel includes a microstructure that includes a ferrite phase as a main phase and a crystallized carbide, an area fraction of a Nb carbide, a Ti carbide, a V carbide, a Ta carbide, and a composite carbide thereof to the crystallized carbide of 30% or more. The component contains 50% by mass or more of Al.

Abstract: A method for controlling the motor of a tool magazine that rotates around a horizontal rotation axis is configured so that: at least two indexing positions for the tool magazine are determined; the load torque acting on the tool magazine when stopped at said indexing positions is measured; an unbalance torque, which is the load torque when stopped at the indexing position at which the load torque when stopped is maximal, is calculated from multiple load torques when stopped; and the servo motor for the tool magazine is controlled on the basis of the unbalance torque.

Abstract: This machine tool has a first rotating feed shaft around a first inclined axis line. Table coordinates are set ahead of time in the machine tool. The table coordinates have imaginary first, second and third linear motion axes that are perpendicular to each other, and an imaginary first rotating feed axis around an imaginary first axis line. The imaginary third linear motion axis is parallel to a third linear motion shaft. One imaginary linear motion axis of the imaginary first linear motion axis or the imaginary second linear motion axis is set above the surface of a workpiece attachment surface, and the imaginary first axis line is set parallel to the one imaginary linear motion axis. A computation unit computes the coordinate values of the imaginary first rotating feed axis in the table coordinates, and a display unit displays the coordinate values of the imaginary first rotating feed axis.

Abstract: A method for controlling the motor of a tool magazine that rotates around a horizontal rotation axis is configured so that: at least two indexing positions for the tool magazine are determined; the load torque acting on the tool magazine when stopped at said indexing positions is measured; an unbalance torque, which is the load torque when stopped at the indexing position at which the load torque when stopped is maximal, is calculated from multiple load torques when stopped; and the servo motor for the tool magazine is controlled on the basis of the unbalance torque.

Abstract: An AlN crystal preparation method includes using at least one element excluding Si that fulfills the condition that a compound is not formed with either Al or N or the condition that a compound is formed with either Al or N but the standard free energy of formation of said compound is greater than the standard free energy of formation of AlN. In the preparation method, a composition including at least Al and the element is melted. Al vapor and nitrogen gas are reacted at a prescribed reaction temperature. AlN crystals are formed.

Abstract: This machine tool has a first rotating feed shaft around a first inclined axis line. Table coordinates are set ahead of time in the machine tool. The table coordinates have imaginary first, second and third linear motion axes that are perpendicular to each other, and an imaginary first rotating feed axis around an imaginary first axis line. The imaginary third linear motion axis is parallel to a third linear motion shaft. One imaginary linear motion axis of the imaginary first linear motion axis or the imaginary second linear motion axis is set above the surface of a workpiece attachment surface, and the imaginary first axis line is set parallel to the one imaginary linear motion axis. A computation unit computes the coordinate values of the imaginary first rotating feed axis in the table coordinates, and a display unit displays the coordinate values of the imaginary first rotating feed axis.