摘要:
The present invention provides an iron-based sintered material in which a rolling contact fatigue strength is improved. In an iron-based sintered material used in such an environment that a lubricating oil is sufficiently fed, a hard carbon coating is provided on a surface of a base material constructed by an iron-based sintered material alloy having a pore via a surface layer hardened by diffusion and an interlayer, and a part of the pore is not covered with the surface layer hardened by diffusion, the interlayer and the hard carbon coating, but is formed in a state of being open to the surface of the surface layer hardened by diffusion.
摘要:
An article comprising a substrate made of Al, Mg, Ti or an alloy whose main component is a member selected from the group consisting of aluminum, magnesium and titanium, an intermediate layer formed on the base having a thickness of 0.7 to 1.5 micrometers and containing aluminum and carbon, and a high-hardness carbon coating formed on the intermediate layer having a thickness of 1 to 2.5 micrometers, wherein a concentration of aluminum in the intermediate layer decreases along the direction from the substrate towards the high-hardness carbon coating, and a concentration of carbon in the intermediate layer increases along the direction from the substrate towards the high-hardness carbon coating;
摘要:
A fuel pump, of which sliding mechanism parts in its fuel chamber have good wear resistance under a severe environment, and a direct fuel injection engine using the fuel pump are provided.In a fuel pump for pressurizing and delivering fuel to a fuel injector of a vehicle engine, at least one of sliding surfaces of a slant plate, a slipper and a plunger sliding in a lubricating oil and at least one of sliding surfaces of sliding members of a plunger and a cylinder contacting with and sliding on each other through the fuel are formed of a hardened layer composed of any one of a nitrided layer, a carburization quenched layer and a carbonitrided layer, or coated with a high corrosion resistant and hard metal compound layer over the hardened layer.
摘要:
In an electronic fuel injector used in a combustion system using gas fuel, the present invention suppresses wearing of worn portions to make control of stable supply of gas fuel possible by forming a surface reforming layer (nitrided layer etc.) having wear resistance on a surface of a structural material of worn portions of the electronic fuel injector.
摘要:
In a fuel pump pressurizing fuel and supplying the fuel to a fuel injection valve of a vehicle engine, a hardened layer of at least one selected from a nitride layer, a carburated and quenched layer and a carbonitrided layer, and a metal compound layer, on a surface of the hardened layer, higher in corrosion resistance than the hardened layer are formed on one of slide surfaces contacting each other and sliding in fuel.
摘要:
A slide member according to the present invention includes: a substrate of at least one element selected from a group made up of V, Cr, Fe, Co, Ni, Zr, Nb, Mo, Ta, W, Ir and Pt; a gradient layer containing chromium and carbon formed on the substrate; and a hard carbon coating layer formed on the gradient layer, in which the graded layer has a component conformation comprising a gradually decreasing chromium concentration and gradually increasing carbon concentration from the substrate side to the hard carbon coating layer side, and the hard carbon coating layer contains aluminum.
摘要:
Disclosed herein is 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 plated with Ni—P or a Ni—P based material is formed by electroless plating.
摘要:
Disclosed herein is 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 plated with Ni—P or a Ni—P based material is formed by electroless plating.
摘要:
A microwave irradiation system includes first and second microwave generators, and an applicator which includes: a microwave transmission part connected to the first and second microwave generators; a reflecting plane, at an other end of the microwave transmission part of the applicator, configured to reflect microwaves from the first and the second microwave generators at such a location that a space of an object, in the microwave transmission part of the applicator between the end and the other end is irradiated with both a greater intensity of electric field and a smaller intensity of magnetic field generated by the first microwave generator and with both a greater intensity of magnetic field and a smaller intensity of electric field generated by the second microwave generator; and a filter part through which at least one of the first and second microwave generators is connected to the applicator.
摘要:
A microwave irradiation system includes first and second microwave generators, and an applicator which includes: a microwave transmission part connected to the first and second microwave generators; a reflecting plane, at an other end of the microwave transmission part of the applicator, configured to reflect microwaves from the first and the second microwave generators at such a location that a space of an object, in the microwave transmission part of the applicator between the end and the other end is irradiated with both a greater intensity of electric field and a smaller intensity of magnetic field generated by the first microwave generator and with both a greater intensity of magnetic field and a smaller intensity of electric field generated by the second microwave generator; and a filter part through which at least one of the first and second microwave generators is connected to the applicator.