Abstract: A metal composite material is obtained by casting a melt of a metal and has an outer surface on which aluminum borate particles maintained in a porous form are exposed. Therefore, an oil is allowed to infiltrate the aluminum borate particles on the outer surface, to be retained therein and to ooze out during sliding. As a consequence, the sliding life during which desired sliding properties are maintained can be significantly prolonged. The metal composite material may be produced from a preform obtained by sintering aluminum borate particles covered with electrically neutralized silica and alumina particles which have been formed by mixing a silica sol and an alumina sol with aluminum borate particles in an aqueous solution to cover aluminum borate particles.

Abstract: Disclosed is a synthesis method for synthesizing in a short time and selectively a microcrystal of a polymer complex having three three-dimensionally and regularly arranged channels. Specifically disclosed is a synthesis method of a polymer complex crystal wherein (1) a metallic solution, which is a mixture of zinc halide(II) and a solvent A that can dissolve the zinc halide, is mixed with (2) a ligand solution, which is a mixture of a tridentate ligand that has three coordination sites coordinated to zinc of the zinc halide and a solvent B that can dissolve the tridentate ligand, to be a single-phase solution, thereby synthesizing a microcrystal of a polymer complex having a three-dimensional coordination network formed by coordinating the tridentate ligand to the zinc and having channels that are three-dimensionally and regularly arranged in the three-dimensional coordination network.

Abstract: A polymerizable spherical transition metal complex is provided which has a hollow shell which is formed from transition metal atoms and bidentate organic ligands, the bidentate organic ligands having a substituent having a polymerizable group moiety at an end thereof, and the substituents being oriented towards the interior of the hollow shell. A spherical transition metal complex in which, in the hollow shell of the polymerizable spherical transition metal complex, the polymerizable groups are polymerized, and a production method thereof are also provided.

Abstract: A metal composite material which can show high wear resistance and durability when used as a sliding member and a process for producing such a metal includes material are proposed. The metal composite material (10) comprises a porous preform (1) containing porous aluminum borate particles (3) in which pores (3a) of the aluminum borate particles (3) are filled with a metal as a result of impregnation of a melt of the metal into the porous preform under pressure. In the metal composite material (10), the metal base material and the aluminum borate particles (3) are tightly bound to each other. Therefore, the metal composite material (10) has high strength and hardness and can show excellent wear resistance when used as a sliding member.

Abstract: In production of a titanium alloy spherical powder by a gas atomizing method, the difference in alloy composition depending on the product particle size is reduced economically. To achieve this, sponge titanium particles and additive metal element particles are mixed by means of a mixer having a pulverizing function such as a ball mill. The mixed particles are compressed to form a rod-formed raw material for melting. The formed rod-formed raw material for melting is powderized by a gas atomizing method. In the mixing step, the additive metal element particles are pulverized, or ground depending on the kind of particles, and solidly adhered to the surface of the sponge titanium particles, so that uniform mixing is possible.

Abstract: A molecular assembly comprising a host metal complex with a space formed therein, and compounds having substituents enclosed in the metal complex within the space and molecular chains bonded to the substituents and extending to the exterior of the metal complex, wherein two or more substituents are enclosed in the same space of the metal complex.

Abstract: A preform for a composite material which has high strength and excellent air permeability and hence is applicable to a high-speed die casting method and which is capable of forming a metal composite material having excellent mechanical properties by a high-speed die casting method. Also provided is a process for producing such a preform. Ceramic fibers or/and ceramic particles are mixed with a silica sol and calcium carbonate and sintered at a predetermined temperature to form a calcium/silicon sinter obtained from the silica sol and calcium carbonate. The calcium/silicon sinter coats the ceramic fibers or/and ceramic particles so that a preform having the fibers or/and the particles bound to each other by the calcium/silicon sinter is obtained. The preform for a composite material has high strength and excellent air permeability and is applicable to the high-speed die casting method capable of attaining high productivity.

Abstract: A nozzle plate of the invention has nozzle opening including a taper part 2 for guiding ink in a pressure generation chamber and a straight pore part 3 formed contiguous with the taper part.

Abstract: A liquid injection type scroll compressor is used to a refrigerating apparatus using hydrocarbon fluoride refrigerant which does not contain chlorine (HFC-125/HFC-143a/HFC-134a) as an operating fluid and an amount of an injected liquid is controlled according to a discharge temperature of the compressor. Further, ester oil and/or ether oil is used as refrigerator oil and a dryer is disposed in a refrigerating cycle. With this arrangement, a refrigerating cycle operation can be stably realized in a wide range without almost changing the arrangement of a conventional refrigerating apparatus.

Abstract: A high-purity silicon monoxide vapor deposition material which, in the formation of a film by vapor deposition, is effective in inhibiting splashing, and which has an average bulk density of 2.0 g/cml and a Vickers hardness of 500 or higher; a process for producing a high-purity silicon monoxide vapor deposition material consisting of SiO and metal impurities as the remainder, the total amount of the impurities being, 50 ppm or smaller, which comprises conducting a degassing, treatment in a raw-material chamber at a temperature lower than the sublimation temperature of silicon monoxide, raising the temperature to sublimate silicon monoxide, and depositing the silicon monoxide on a substrate in a deposition chamber.

Abstract: An RF circuit module includes a laminated dielectric substrate defining an RF circuit module and including an upper layer and a lower layer. An IC and an RF filter are disposed in the upper layer, and a power amplifier and an antenna switch are disposed in the lower layer. The antenna switch is disposed near an end surface of the laminated dielectric substrate, and the RF amplifier is disposed at a position at which it partially overlaps the antenna switch in a plan view. The IC and the power amplifier are also disposed at positions at which they partially overlap each other in a plan view.

Abstract: A preform for the composite material and an aluminum composite material which can form a composite material has excellent abrasion resistant property and high strength and a manufacturing method of the same are disclosed. A pre-mixture 9 comprising aluminum borate whisker 3 and potassium titanate whisker 4 in the range of 5% to 20% by volume was sintered at certain temperature. The titanium oxide 11 produced by the whisker reaction was bound to the surface of aluminum borate whisker 3, and the preform having high strength was obtained accordingly. Aluminum composite material 10 having excellent abrasion resistant property and high strength was obtained by impregnating aluminum alloy 6 to preform 1 for composite material.

Abstract: A nozzle plate of the invention has nozzle opening including a taper part 2 for guiding ink in a pressure generation chamber and a straight pore part 3 formed contiguous with the taper part.

Abstract: An aluminum composite material has a surface structure in which a part of lubricative granules projects by 2 ?m to 25 ?m from the surface of the aluminum alloy base material. The lubricative property of the lubricative granules is utilized sufficiently, and the abrasion of the aluminum alloy base material can be prevented. Further, according to a manufacturing method of the aluminum composite material where the surface of the aluminum alloy base material is eroded with a etching solution, a level of erosion of the aluminum alloy base material can be easily adjusted and a surface structure from which the lubricative granules project can be formed sufficiently.

Abstract: An aluminum composite material has a surface structure in which a part of lubricative granules projects by 2 ?m to 25 ?m from the surface of the aluminum alloy base material. The lubricative property of the lubricative granules is utilized sufficiently, and the abrasion of the aluminum alloy base material can be prevented. Further, according to a manufacturing method of the aluminum composite material where the surface of the aluminum alloy base material is eroded with a etching solution, a level of erosion of the aluminum alloy base material can be easily adjusted and a surface structure from which the lubricative granules project can be formed sufficiently.

Abstract: A manufacturing method of an aluminum composite material having excellent abrasion resistant and vibration damping properties is disclosed. The aluminum composite material is manufactured by impregnating a perform with an aluminum alloy the perform is formed by mixing an alumina fiber and graphite or activated charcoal and an inorganic binder in water and sintering the resultant mixed product at a predetermined sintering temperature under vacuum, in an inert gas, or in a reducing gas.

Abstract: Premixed material was formed by mixing alumina fiber and/or carbon fiber, titanium oxide particle and aluminum powder and was sintered to bind alumina (aluminum oxide), produced by the oxidation-reduction reaction of titanium oxide particles and aluminum powder, and a titanium-nitrogen compound in a film on the surface of alumina fiber and/or carbon fiber, and to form preform for the composite material. The composite material had high strength because preform for the composite material produced by the manufacturing method had excellent strength and breathability, and occurrence of unfilled pore space in the composite material formed by impregnating hot solution of such as aluminum alloy was prevented.

Abstract: A liquid injection type scroll compressor is used to a refrigerating apparatus using hydrocarbon fluoride refrigerant which does not contain chlorine (HFC-125/HFC-143a/HFC-134a) as an operating fluid and an amount of an injected liquid is controlled according to a discharge temperature of the compressor. Further, ester oil and/or ether oil is used as refrigerator oil and a dryer is disposed in a refrigerating cycle. With this arrangement, a refrigerating cycle operation can be stably realized in a wide range without almost changing the arrangement of a conventional refrigerating apparatus.

Abstract: A preform for the composite material and an aluminum composite material which can form a composite material has excellent abrasion resistant property and high strength and a manufacturing method of the same are disclosed. A pre-mixture 9 comprising aluminum borate whisker 3 and potassium titanate whisker 4 in the range of 5% to 20% by volume was sintered at certain temperature. The titanium oxide 11 produced by the whisker reaction was bound to the surface of aluminum borate whisker 3, and the preform having high strength was obtained accordingly. Aluminum composite material 10 having excellent abrasion resistant property and high strength was obtained by impregnating aluminum alloy 6 to preform 1 for composite material.

Abstract: A piezoelectric oscillator unit maintains the adhesive force of a quartz vibrator package with respect to a circuit substrate even when the solder connecting the quartz vibrator package to the circuit substrate melts. This prevents the vibrator package from lifting from or falling off of the circuit substrate. In this piezoelectric oscillator unit, a quartz vibrator housing a quartz member is overlaid on a box-shaped circuit substrate on which an oscillating circuit, a temperature compensation circuit, or other circuits are mounted. The electrodes provided on the four corners of the top surface of the circuit substrate and the electrodes provided on the four corners of the bottom surface of the quartz vibrator are bonded together using solder, and also the circuit substrate and the quartz vibrator are mechanically coupled by an adhesive.