摘要:
An aluminum alloy material having an excellent sea water corrosion resistance comprises an aluminum alloy substrate whose ten-points average surface roughness Rz, which is the average of five greatest peak-to-valley separations on the surface, is controlled at 0.3 μm or over, an organic phosphonic primer film formed on a surface of the aluminum alloy substrate, and a fluorine resin paint film formed on the primer film and having a dry average thickness of 1 to 100 μm. A plate heat exchanger having an excellent sea water corrosion resistance is also provided wherein the aluminum alloy material is used as a heat transfer unit using sea water as cooling water.
摘要:
Disclosed are an aluminum alloy material and a plate heat exchanger using the aluminum alloy material, both of which have superior corrosion resistance. Specifically, the aluminum alloy material includes an aluminum alloy base material having an anodic oxide layer with an average thickness of 1 to 20 μm as its surface layer, an organic phosphonic acid primer coating arranged on the surface of the aluminum alloy base material, and a fluorocarbon resin coating arranged on the surface of the organic phosphonic acid primer coating and having an average thickness of 1 to 100 μm after drying.
摘要:
In a seat reclining device, reclining mechanisms that are respectively provided on right and left sides of a seat are constructed such that locking and unlocking motion thereof can be performed in synchronism with each other via a connection member. A connection structure of the connection member and a operation shaft is constructed as a transmission preventing mechanism for preventing transmission of the unlocking motion between the reclining mechanisms when a load is laterally disproportionately applied to the seat back in which the reclining mechanisms are in a locking condition such that a relatively different rotational displacement that permits to release the locking condition is generated between the reclining mechanisms that are arranged in rotationally synchronism with each other.
摘要:
An electrode for a Group III nitride compound semiconductor having p-type conduction that has a double layer structure. The first metal electrode layer comprising, for example, nickel (Ni) and the second metal electrode layer comprising, for example, gold (Au). The Ni layer is formed on the Group III nitride compound semiconductor having p-type conduction, and the Au layer is formed on the Ni layer. Heat treatment changes or reverses the distribution of the elements Ni and Au. Namely, Au is distributed deeper into the Group III nitride compound semiconductor than is Ni. As a result, the resistivity of the electrode is lowered and its ohmic characteristics are improved as well as its adhesive strength.
摘要:
Provided is a dust core excellent in flux density, iron loss, and mechanical strength.A production process of a dust core according to the invention includes a step of compacting a mixture obtained by mixing an iron-based soft magnetic powder for powder compact having a phosphate conversion coating film on the surface of an iron-based soft magnetic powder with a lubricant to obtain a powder compact, a heat treatment step of heating the resulting powder compact at 550° C. or more but not more than 650° C. in an inert atmosphere, and a heat treatment step of heating the heat-treated powder compact at 420° C. or more but not more than 530° C. in an oxidizing atmosphere.
摘要:
A process for producing a joint structure of a steel sheet and an aluminum sheet, in which the steel sheet and the aluminum sheet are joined to each other so as to be electrically connected to each other. The process is characterized by comprising a step of forming at least one resin coating film in a thickness of 0.1 to 5.0 μm on a contact surface on the steel sheet side, wherein the resin is selected from the group consisting of a polyolefin resin, a polyurethane resin and an epoxy resin.
摘要:
Provided is a dust core excellent in flux density, iron loss, and mechanical strength.A production process of a dust core according to the invention includes a step of compacting a mixture obtained by mixing an iron-based soft magnetic powder for powder compact having a phosphate conversion coating film on the surface of an iron-based soft magnetic powder with a lubricant to obtain a powder compact, a heat treatment step of heating the resulting powder compact at 550° C. or more but not more than 650° C. in an inert atmosphere, and a heat treatment step of heating the heat-treated powder compact at 420° C. or more but not more than 530° C. in an oxidizing atmosphere.
摘要:
In a seat reclining device, reclining mechanisms that are respectively provided on right and left sides of a seat are constructed such that locking and unlocking motion thereof can be performed in synchronism with each other via a connection member. A connection structure of the connection member and a operation shaft is constructed as a transmission preventing mechanism for preventing transmission of the unlocking motion between the reclining mechanisms when a load is laterally disproportionately applied to the seat back in which the reclining mechanisms are in a locking condition such that a relatively different rotational displacement that permits to release the locking condition is generated between the reclining mechanisms that are arranged in rotationally synchronism with each other.
摘要:
An Ag alloy reflective layer for optical information recording medium having excellent environmental resistance, an optical information recording medium having such Ag alloy reflective layer, and the like are provided. This Ag alloy reflective layer for an optical information includes 0.1 to 5 atomic % in total of at least one element selected from W, Ti, V, Mn, Zr, Cr, and Ni; 0.005 to 1 atomic % of Bi; and the residue of Ag and inevitable impurities. As a consequence, this Ag alloy reflective layer has improved environmental resistance including the light resistance for the light beam of particular wavelength and resistance to moist heat under particular set of conditions.
摘要:
An aluminum alloy for use in a plate-fin heat exchanger having a heat transfer portion with seawater as a coolant includes an organic phosphonic acid underlying coating disposed on the surface of the aluminum alloy and a fluorocarbon resin coating disposed on the organic phosphonic acid underlying coating, the fluorocarbon resin coating having an average thickness of 1 to 100 μm after drying. The aluminum alloy has improved durability of coating adhesion and excellent seawater corrosion resistance.