摘要:
The present invention provides a soft magnetic powder composite core for an electric apparatus produced with soft magnetic particles having electric insulating layers on the surfaces thereof, wherein said electric insulating layers are formed by mixing said soft magnetic particles with an insulating layer-forming solution which comprises a phosphating solution and a rust inhibitor which is an organic compound containing at least one of nitrogen or sulfur which has lone pair electrons suppressing the formation of iron oxide and surfactant, and drying the treated soft magnetic particles at a predetermined temperature. The soft magnetic powder composite core is excellent in iron loss and magnetic flux density.
摘要:
The present invention provides a soft magnetic powder composite core for an electric apparatus produced with soft magnetic particles having electric insulating layers on the surfaces thereof, wherein said electric insulating layers are formed by mixing said soft magnetic particles with an insulating layer-forming solution which comprises a phosphating solution and a rust inhibitor which is an organic compound containing at least one of nitrogen or sulfur which has lone pair electrons suppressing the formation of iron oxide and surfactant, and drying the treated soft magnetic particles at a predetermined temperature. The soft magnetic powder composite core is excellent in iron loss and magnetic flux density.
摘要:
The present invention provides a soft magnetic powder composite core for an electric apparatus produced with soft magnetic particles having electric insulating layers on the surfaces thereof, wherein said electric insulating layers are formed by mixing said soft magnetic particles with an insulating layer-forming solution which comprises a phosphating solution and a surfactant, and drying the treated soft magnetic particles at a predetermined temperature. The soft magnetic powder composite core is excellent in iron loss and magnetic flux density. The surfactant contains anionic or cationic functional groups and a perfluoroalkyl group.
摘要:
The present invention provides a soft magnetic powder composite core for an electric apparatus produced with soft magnetic particles having electric insulating layers on the surfaces thereof, wherein said electric insulating layers are formed by mixing said soft magnetic particles with an insulating layer-forming solution which comprises a phosphating solution and a rust inhibitor which is an organic compound containing at least one of nitrogen or sulfur which has lone pair electrons suppressing the formation of iron oxide and surfactant, and drying the treated soft magnetic particles at a predetermined temperature. The soft magnetic powder composite core is excellent in iron loss and magnetic flux density.
摘要:
The powder of one of a refractory metal C, Mo, or W and the powder of a highly conductive metal Cu are mixed together, the resulting mixture is pressurized to form a complex pressed body with a relative density of 65% or higher, and the complex pressed body is heated to a temperature not higher than the melting point of Cu to sinter the complex pressed body. The content V (percent by volume) of the refractory metal is within the range obtained from equations (1) and (2) shown below, in which M represents the atomic weight of the refractory metal; a boundary between the refractory metal and highly conductive metal on an arbitrary cross section is physically separated over at least 70% of the length of the boundary. V = M × c / 95.94 8 ≤ c ≤ 32 Accordingly, the present invention can provide an electrical contact that achieves both low strength, which results in a reduction in force with which a contact bridge formed by melting is broken, and high density for ensuring current-carrying and interruption performance, and thereby enables the electrical current switch and other elements to be substantially compact.
摘要:
The invention relates to a fuel pump for an inter-cylinder direct fuel injection apparatus, in which occurrence of corrosion and attrition caused by cavitation or erosion can be suppressed, their resistance against the environment can be improved, and an excellent lifetime can be achieved in the case of the use of an aluminum material even if the temperature reaches as high as 100°C or higher and the pressure reaches as high as 7 to 12 MPa. In the fuel pump for an inter-cylinder direct fuel injection apparatus, made of aluminum or an aluminum alloy, a coating film ( 501) plated with Ni-P or a Ni-P based material is formed by electroless plating.
摘要:
The object of the present invention is to provide: high-reliability and long-life CO 2 refrigerant compressor-use bearings that uses bearing materials high in wear resistance and in baking resistance, and; such a compressor, air conditioner, refrigerator, and hot water supply machine that each employ these bearings, wherein the bearings are characterized in that each bearing comprises a cylindrically shaped member whose graphite-containing carbonaceous base material has pores impregnated with tin or with one type of metal selected from the IB group or the VIII group, except iron, or with an alloy based on these metals.
摘要:
The object of the present invention is to provide an electric contact member characterized by excellent current breaking capacity as well as a high degree of dielectric strength and welding resistance, and the method for manufacturing this electric contact member at a low production cost with high productivity. The above object can be attained by the present invention providing an electric contact member characterized by the texture wherein fire proof metal powder having the form of a flat plate is diffused in the matrix comprising a highly conductive metal, the electric contact member being further characterized in that the flat surface is oriented in one direction and the surface in parallel with the flat surface of the fire proof metal powder is used as a contact point face.
摘要:
A high reliability electric power control semiconductor device with a prolonged product lifetime has been provided by successfully suppressing the metal support plate or the metal heat dissipation plate from warping due to the thermal stress during bonding so as to prevent the occurrences of cracks and gaps in the brazing fillers in the bonded layers between the metal heat dissipation plate or the metal support plate and the insulation plate in the semiconductor device comprising the semiconductor elements, metal heat dissipation plate, thermal stress buffer, insulation plate, and the metal support plate, wherein at least one of the metal heat dissipation plate and the metal support plate comprises a copper alloy of which a softening temperature at which a hot hardness of which becomes 1/2 of the hardness at the room temperature is 350°C or more. Further, in the semiconductor device fabricated by bonding the semiconductor elements via the thermal stress buffer, the heat dissipation plate and the insulation plate onto the metal support plate, the heat dissipation plate comprises a portion having a reduced thickness in the periphery thereof machined by counterboring or the like.