Abstract: Provided is a means which is capable of improving the durability of a hydrophilic member that has a photocatalyst layer containing tungsten oxide. The hydrophilic member includes a substrate, a first intermediate layer which is disposed on the substrate and contains a metal oxide that contains an element of Group 4, Group 6, Group 13 or Group 14 of the periodic table, and a photocatalyst layer which is disposed on the first intermediate layer and contains tungsten oxide.

Abstract: A low-friction sliding mechanism includes first and second sliding members having respective sliding surfaces slidable relative to each other and a lubricant applied to the sliding surfaces of the first and second sliding members. At least the sliding surface of the first sliding member is made of a diamond-like carbon material, and at least the sliding surface of the second sliding member is made of either an aluminum-based alloy material, a magnesium-based alloy material or a diamond-like carbon material. The lubricant contains a base oil and at least one of an ashless fatty-ester friction modifier and an ashless aliphatic-amine friction modifier.

Abstract: A low-friction sliding mechanism includes first and second sliding members having respective sliding surfaces slidable relative to each other and a lubricant applied to the sliding surfaces of the first and second sliding members. At least the sliding surface of the first sliding member is made of a diamond-like carbon material, and at least the sliding surface of the second sliding member is made of either an aluminum-based alloy material, a magnesium-based alloy material or a diamond-like carbon material. The lubricant contains a base oil and at least one of an ashless fatty-ester friction modifier and an ashless aliphatic-amine friction modifier.

Abstract: A low-friction sliding mechanism includes first and second sliding members having respective sliding surfaces slidable relative to each other and a lubricant applied to the sliding surfaces of the first and second sliding members. At least the sliding surface of the first sliding member is made of a diamond-like carbon material, and at least the sliding surface of the second sliding member is made of either an aluminum-based alloy material, a magnesium-based alloy material or a diamond-like carbon material. The lubricant contains a base oil and at least one of an ashless fatty-ester friction modifier and an ashless aliphatic-amine friction modifier.

Abstract: An engine hood structure including a hood panel, and a porous metal layer disposed on an inside of the hood panel. The porous metal layer has a density increased in a direction extending from an outer periphery of the engine hood structure toward a central portion of the engine hood structure. The porous metal layer is constructed such that a plateau stress generated in the porous metal layer upon a compression test is increased in a direction extending from an outer periphery of the engine hood structure toward a central portion of the engine hood structure.

Abstract: A low-friction sliding mechanism includes first and second sliding members having respective sliding surfaces slidable relative to each other and a lubricant applied to the sliding surfaces of the first and second sliding members. At least the sliding surface of the first sliding member is made of a diamond-like carbon material, and at least the sliding surface of the second sliding member is made of either an aluminum-based alloy material, a magnesium-based alloy material or a diamond-like carbon material. The lubricant contains a base oil and at least one of an ashless fatty-ester friction modifier and an ashless aliphatic-amine friction modifier.

Abstract: An aluminum alloy filler material for use in welding of metal members including at least one aluminum die-cast member containing Mg includes an aluminum or an aluminum alloy as base material and Al—K—F series flux. The Al—K—F series flux is contained by 2 to 4 mass % with respect to the entire filler material.

Abstract: A low-friction sliding mechanism includes first and second sliding members having respective sliding surfaces slidable relative to each other and a lubricant applied to the sliding surfaces of the first and second sliding members. At least the sliding surface of the first sliding member is made of a diamond-like carbon material, and at least the sliding surface of the second sliding member is made of either an aluminum-based alloy material, a magnesium-based alloy material or a diamond-like carbon material. The lubricant contains a base oil and at least one of an ashless fatty-ester friction modifier and an ashless aliphatic-amine friction modifier.

Abstract: An engine hood structure including a hood panel, and a porous metal layer disposed on an inside of the hood panel. The porous metal layer has a density increased in a direction extending from an outer periphery of the engine hood structure toward a central portion of the engine hood structure. The porous metal layer is constructed such that a plateau stress generated in the porous metal layer upon a compression test is increased in a direction extending from an outer periphery of the engine hood structure toward a central portion of the engine hood structure.

Abstract: A low-friction sliding mechanism includes first and second sliding members having respective sliding surfaces slidable relative to each other and a lubricant applied to the sliding surfaces of the first and second sliding members. At least the sliding surface of the first sliding member is made of a diamond-like carbon material, and at least the sliding surface of the second sliding member is made of either an aluminum-based alloy material, a magnesium-based alloy material or a diamond-like carbon material. The lubricant contains a base oil and at least one of an ashless fatty-ester friction modifier and an ashless aliphatic-amine friction modifier.

Abstract: An aluminum alloy filler material for use in welding of metal members including at least one aluminum die-cast member containing Mg includes an aluminum or an aluminum alloy as base material and Al—K—F series flux. The Al—K—F series flux is contained by 2 to 4 mass % with respect to the entire filler material.

Abstract: A low-friction sliding mechanism includes first and second sliding members having respective sliding surfaces slidable relative to each other and a lubricant applied to the sliding surfaces of the first and second sliding members. At least the sliding surface of the first sliding member is made of a diamond-like carbon material, and at least the sliding surface of the second sliding member is made of either an aluminum-based alloy material, a magnesium-based alloy material or a diamond-like carbon material. The lubricant contains a base oil and at least one of an ashless fatty-ester friction modifier and an ashless aliphatic-amine friction modifier.

Abstract: An aluminum alloy for die casting, contains, in terms of mass percentage: Si in the range of 1.0˜3.5 %; Mg in the range of 2.5˜4.5 %; Mn in the range of 0.3˜1.5%; Fe in the range equal to or less than 0.15%; Ti in the range of equal to or less than 0.20%; and the balance of aluminum and inevitable impurities. A die cast product having good strength and elongation in a high strain rate region is produced from the aluminum alloy without the need for solution heat treatment.

Abstract: An aluminum alloy for a die casting, used as the material of parts of an automotive vehicle. The aluminum alloy consists essentially of Si in an amount ranging from 10 to 12% by weight, Mg in an amount ranging from 0.15 to 0.50% by weight, Mn in an amount ranging from 0.5 to 1.0% by weight, Fe in an amount of not more than 0.15% by weight, Ti in an amount of not more than 0.1% by weight, Sb in an amount ranging from 0.05 to 0.20% by weight, B in an amount ranging from 0.005 to 0.02%, and balance consisting of aluminum and inevitable impurities.

Abstract: A filler wire for laser-welding an aluminum alloy is described, which comprises a base material of Aluminum-Silicon based alloy and a flux of Aluminum-Potassium-Fluorine-based composition. The amount of the flux in the base material is greater than 0 (zero) wt. % and less than approximately 1.0 wt. %.

Abstract: A valve seat (2) is formed by build-up cladding by irradiating a laser beam on a copper alloy powder (4) provided in the rim of a port (3) formed in an engine cylinder head (1). The copper alloy powder (4) consists of copper (Cu), 6-9 wt % nickel (Ni), 1-5 wt % silicon (Si), and 1-5 wt % of one of molybdenum (Mo), tungsten (W), tantalum (Ta), niobium (Nb) and vanadium (V). Due to this composition, the valve seat (2) has few microcracks and excellent abrasion resistance.

Abstract: An aluminum alloy for die casting, contains, in terms of mass percentage: Si in the range of 1.0˜3.5%; Mg in the range of 2.5˜4.5%; Mn in the range of 0.3˜1.5%; Fe in the range equal to or less than 0.15%; Ti in the range of equal to or less than 0.20%; and the balance of aluminum and inevitable impurities. A die cast product having good strength and elongation in a high strain rate region is produced from the aluminum alloy without the need for solution heat treatment.

Abstract: A filler wire for laser-welding an aluminum alloy is described, which comprises a base material of Aluminum-Silicon based alloy and a flux of Aluminum-Potassium-Fluorine-based composition. The amount of the flux in the base material is greater than 0 (zero) wt. % and less than approximately 1.0 wt. %.

Abstract: A valve seat (2) is formed by build-up cladding by irradiating a laser beam on a copper alloy powder (4) provided in the rim of a port (3) formed in an engine cylinder head (1). The copper alloy powder (4) consists of copper (Cu), 6-9 wt % nickel (Ni), 1-5 wt % silicon (si), and 1-5 wt % of one of molybdenum (Mo), tungsten (W), tantalum (Ta), niobium (Nb) and vanadium (V). Due to this composition, the valve seat (2) has few microcracks and excellent abrasion resistance.

Abstract: The invention relates to a bearing for supporting a moving member having a surface of a first arithmetical mean roughness. This bearing is made of an abrasion-resistant aluminum alloy containing 14.0-17.5 wt% of Si, 2.0-5.0 wt% of Cu, 0.1-1.0 wt% of Mg, 0.3-0.8 wt% of Mn, 0.1-0.3 wt% of Cr, 0.05-0.20 wt% of Ti, 0.003-0.05 wt% of P, not greater than 1.5 wt% of Fe, less than 0.005 wt% of Ca, and aluminum as a remainder. The aluminum alloy contains silicon primary crystals, and first and second intermetallic compounds. Each of the silicon primary crystals and these intermetallic compounds has an average particle diameter from 8 to 30 .mu.m. The silicon primary crystals and the first and second intermetallic compounds respectively have first, second and third fractions each ranging from 5 to 40 .mu.m in particle diameter. The total area of the first, second and third fractions on a two-dimensional section of the alloy is from 5 to 10% by area, based on the total area of the section.