Abstract: A chemical solution used for cleaning or etching a ruthenium-containing layer, which can obtain the ruthenium-containing layer having a reduced surface roughness while maintaining a good etching rate against the ruthenium, and a method for fabricating ruthenium wiring. The chemical solution includes orthoperiodic acid, a base component, and any one of a nitrogen-containing heterocyclic compound, an organic phosphonic acid, and an organic carboxylic acid.

Abstract: A coated titanium material includes a titanium material and a coating film formed on a surface of the titanium material. A Ti-based oxide is included in an interface between the titanium material and the coating film. The Ti-based oxide is one or both rutile type TiO2 and Ti2O3. In a case where a cut surface of the coating film is formed by using a SAICAS method under conditions that a horizontal speed is 2 ?m/s and a vertical speed is 0.1 ?m/s, on the cut surface, an area percentage of the Ti-based oxide is 30.0% or more in a region having a distance of 15 ?m from a reference line specified on the basis of a boundary line, which is an intersection line between the cut surface and the interface, to a coating film side.

Abstract: A crystal form determination method includes a first process of preparing a measurement target object; a second process of entering a terahertz wave to the measurement target object and detecting the terahertz wave from the measurement target object to acquire a plurality of detection results corresponding to a plurality of times separated from each other; and a third process of determining a type of crystal form contained in the measurement target object. In the third process, when a frequency characteristic having a third peak at a third frequency different from a first frequency related to a first peak corresponding to an anhydride and a second frequency related to a second peak corresponding to a hydrate exists among the plurality of frequency characteristics, determination is made that the crystal form different from the anhydride and the hydrate is contained in the measurement target object.

Abstract: A coated titanium material includes a titanium material and a coating film formed on a surface of the titanium material. A Ti-based oxide is included in an interface between the titanium material and the coating film. The Ti-based oxide is one or both rutile type TiO2 and Ti2O3. In a case where a cut surface of the coating film is formed by using a SAICAS method under conditions that a horizontal speed is 2 ?m/s and a vertical speed is 0.1 ?m/s, on the cut surface, an area percentage of the Ti-based oxide is 30.0% or more in a region having a distance of 15 ?m from a reference line specified on the basis of a boundary line, which is an intersection line between the cut surface and the interface, to a coating film side.

Abstract: Provided is a method for efficiently obtaining HFO-1132(E) and/or HFO-1132(Z). The method includes supplying a composition containing HFO-1132(E) and/or HFO-1132(Z) to a reactor to perform isomerization between HFO-1132(E) and HFO-1132(Z) by irradiating the composition with light.

Abstract: A method for producing a semiconductor element and a chemical solution to be used in the method for producing a semiconductor element, the method including dry-etching or chemically-mechanically polishing a ruthenium-containing layer located as an uppermost layer of a substrate; and bringing a surface of the substrate into contact with a chemical solution thereby satisfactorily cleaning and removing a ruthenium residue formed on the surface of the substrate; and a chemical solution to be suitably used in the method for producing a semiconductor element.

Abstract: A bar includes a titanium alloy containing an ? phase and a ? phase, in which the titanium alloy contains, as a chemical composition, by mass %: Al: 4.5% to 6.4%; Fe: 0.5% to 2.1%; C: 0.01% or less; N: 0.05% or less; O: 0.25% or less; V: 0.10% or less; Si: 0% to 0.40%; Ni: 0% to 0.15%; Cr: 0% to 0.25%; Mn: 0% to 0.25%; and a remainder including Ti and impurities, an area ratio of the ? phase in a metallographic structure of the titanium alloy is 20% or less, and an average minor axis length of grains of the ? phase is 2.0 ?m or less.

Abstract: A method for efficiently obtaining trans-1-halo-2-fluoroethylene (E-isomer) and/or cis-1-halo-2-fluoroethylene (Z-isomer) is provided. The method for producing trans-1-halo-2-fluoroethylene (E-isomer) and/or cis-1-halo-2-fluoroethylene (Z-isomer) includes supplying a composition containing trans-1-halo-2-fluoroethylene (E-isomer) and/or cis-1-halo-2-fluoroethylene (Z-isomer) to a reactor to perform isomerization between the trans-1-halo-2-fluoroethylene (E-isomer) and the cis-1-halo-2-fluoroethylene (Z-isomer) in a liquid phase by performing light irradiation in the presence of a photosensitizer.

Abstract: This disclosure provides a novel azeotrope-like composition and a separation method using the composition. The disclosure provides an azeotrope-like composition comprising 1,2-difluoroethylene (HFO-1132) and hydrogen fluoride; an azeotrope-like composition comprising 1,1,2-trifluoroethylene (HFO-1123) and hydrogen fluoride; and a separation method of a composition comprising hydrogen fluoride and at least one member selected from the group consisting of trans-1,2-difluoroethylene (HFO-1132(E)), cis-1,2-difluoroethylene (HFO-1132(Z)), and 1,1,2-trifluoroethylene (HFO-1123).

Abstract: A glass assembly with a resin frame for a vehicle window includes a glass plate; and a resin frame disposed on a peripheral edge area of the glass plate, wherein an electrical component disposed in a second section and an electrical connection member disposed in a first section are electrically connected together via a through hole as a relay portion interposed between a surface and an inner side surface with an adhesive applied thereto, and wherein the through hole is sealed with a sealing member.

Abstract: A chemical solution for removing a precious metal includes a cerium-containing oxidizing agent (A), an acid component (B) that is two or more acid components having different pKa's one another, provided that perchloric acid is excluded, and water.

Abstract: A chemical solution for removing a precious metal includes a cerium-containing oxidizing agent (A), a metal component (B) including a transition metal other than cerium, and water, in which a content of the metal component (B) is less than 1.65×10?3 parts by mass with respect to 1 part by mass of the cerium-containing oxidizing agent (A) in terms of the transition metal.

Abstract: A chemical solution for removing a precious metal includes a cerium-containing oxidizing agent (A), an acid component (B) selected from the group consisting of carbonic acid, formic acid, propionic acid, butyric acid, and sulfonic acid, and salts thereof, and water.

Abstract: An ?+? type titanium alloy wire contains, in mass %, Al: 4.50 to 6.75%, Si: 0 to 0.50%, C: 0.080% or less, N: 0.050% or less, H: 0.016% or less, O: 0.25% or less, Mo: 0 to 5.5%, V: 0 to 4.50%, Nb: 0 to 3.0%, Fe: 0 to 2.10%, Cr: 0 to less than 0.25%, Ni: 0 to less than 0.15%, Mn: 0 to less than 0.25%, and the balance being Ti and impurities, the contents of Al, Mo, V, Nb, Fe, Cr, Ni, and Mn satisfying an equation, in which an average aspect ratio of an ? crystal grain is 1.0 to 3.0, a maximum crystal grain diameter of the ? crystal grain is 30.0 ?m or less, an average crystal grain diameter of the ? crystal grain is 1.0 to 15.0 ?m.

Abstract: A dispersion stability evaluation method is a method for evaluating a dispersion stability of dispersoid dispersed in a dispersion medium. The dispersion stability evaluation method includes a first step of holding a sample including the dispersion medium and the dispersoid on a reflective surface, and a second step of causing terahertz waves to be incident on the reflective surface from a side opposite to the sample and detecting the terahertz waves reflected by the reflective surface. In the second step, while a state where the dispersoid are allowed to move toward the reflective surface is maintained, a plurality of detection results respectively corresponding to a plurality of times apart from each other are acquired.

Abstract: Provided is a laminate that enables a further improvement in flame retardancy as compared with a conventional laminate. A laminate in accordance with the present disclosure includes: a metal plate; and a silicone rubber layer provided on a surface of the metal plate, the silicone rubber layer containing a flame retardant silicone rubber compound and a fiber-based flame retardant, and the flame retardant silicone rubber compound being rated as V-0 or higher according to UL94 standard.

Abstract: A two-stage refrigeration apparatus (500) includes a first cycle (510) and a second cycle (520). The first cycle (510) includes a first compressor (511), a first condenser (512), a first expansion mechanism (513), and a first evaporator (514) that are arranged in such a manner as to be connected to the first cycle. A first refrigerant circulates through the first cycle. The second cycle (520) includes a second downstream-side condenser (523) and a second evaporator (527) that are arranged in such a manner as to be connected to the second cycle. A second refrigerant circulates through the second cycle. The first evaporator (514) and the second downstream-side condenser (523) constitute a cascade condenser (531). In the cascade condenser (531), heat is exchanged between the first refrigerant and the second refrigerant. At least one of the first refrigerant and the second refrigerant is a refrigerant mixture containing at least 1,2-difluoroethylene (HFO-1132(E)).

Abstract: The present disclosure provides a novel azeotropic or azeotrope-like composition comprising hydrogen fluoride and 1,1,2-trifluoroethane (HFC-143), 1-chloro-2, 2-difluoroethane (HCFC-142), or 1,2-dichloro-1-fluoroethane (HCFC-141); and a separation method using the composition. An azeotropic or azeotrope-like composition comprising hydrogen fluoride and HFC-143. An azeotropic or azeotrope-like composition comprising hydrogen fluoride and HCFC-142. An azeotropic or azeotrope-like composition comprising hydrogen fluoride and HCFC-141. A separation method of a composition comprising hydrogen fluoride and at least one member selected from the group consisting of HFC-143, HCFC-142, and HCFC-141.

Abstract: Provided is, as a radioactive halogen labeling precursor compound that is highly reactive and stable, a compound represented by the following general formula (II): wherein R1 and R2 each independently represent an alkyl group having 5 to 20 carbon atoms, X1 and X2 each independently represent a halogen atom, and R3 represents a monovalent group derived from a sugar, or the like.

Abstract: An object is to provide an efficient method for producing HFC-143 or HFO-1132. Provided as a means for solution is a method for producing 1,1,2-trifluoroethane (HFC-143), comprising subjecting 1,1,2-trifluoroethylene to a reduction reaction with a reducing agent in the presence of a catalyst to obtain HFC-143.