摘要:
A method for producing a substrate for a power module with a heat sink includes a heat sink bonding step for bonding a heat sink to the surface of a second metal plate. The heat sink bonding step includes: a Cu layer forming step for forming a Cu layer on at least one of the surface of the second metal plate and a bonding surface of the heat sink; a heat sink laminating step for laminating the second metal plate and the heat sink via the Cu layer; a heat sink heating step for pressing in the lamination direction and heating the second metal plate and the heat sink, to diffuse Cu in the Cu layer into the second metal plate and the heat sink; and a molten metal solidifying step for solidifying the molten metal formed with Cu diffusion, to bond the second metal plate and the heat sink.
摘要:
Disclosed is a ceramic substrate including silicon in which the concentration of a silicon oxide and a silicon composite oxide in the surface thereof is less than or equal to 2.7 Atom %.
摘要:
The instantaneous centers of rotation of the front and the rear suspensions of a vehicle are defined by an intersection of lines drawn parallel to the axes of the inboard ends of the respective upper and lower links and passing through the ball joints provided at the outboard ends of the respective upper and lower links. The instantaneous centers of rotation of the front and the rear suspensions are located at approximately the same height and distance on either side of the center of gravity of the vehicle.
摘要:
A vehicle has rear wheels each equipped with a rear tire having a tire characteristic which is different from that of front wheels, and which is suitable for one cornering condition, for example, a condition in which a lateral acceleation is high, and a steering system which steers the rear wheels so as to remedy the deficiency of the tires of the rear wheels in another cornering conditions.
摘要:
A power module substrate includes: a ceramics substrate having a surface; and a metal plate connected to the surface of the ceramics substrate, composed of aluminum, and including Cu at a joint interface between the ceramics substrate and the metal plate, wherein a Cu concentration at the joint interface is in the range of 0.05 to 5 wt %.
摘要:
A constructional board has a coat formed on the surface, and is characterized in that carbodihydrazide are included on the surface of the coat and a coat layer containing colloidal silica as a main component is formed.
摘要:
A power element mounting substrate including a circuit layer brazed to a surface of a ceramic plate, and a power element soldered to a front surface of the circuit layer, wherein the circuit layer is constituted using an Al alloy with an average purity of more than or equal to 98.0 wt % and less than or equal to 99.9 wt %, Fe concentration of the circuit layer at a side of a surface to be brazed to the ceramic plate is less than 0.1 wt %, and Fe concentration of the circuit layer at a side of the surface opposite to the surface to be brazed is more than or equal to 0.1 wt %.
摘要:
A double wishbone rear suspension comprises upper and lower control arms of the A-shaped frame type. The pivot ends of the lower control arm pivot about axes which are coaxial and constitute part of a straight line (L.sub.1). The straight line (L.sub.1) extends forwardly and laterally outwardly and at the same time forwardly and upwardly with respect to the vehicle body. The pivot ends of the upper control arm pivot about axes which are coaxial and constitute part of a straight line (L.sub.3). The straight line (L.sub.3) is parallel with a longitudinal axis of a vehicle body and located on a horizontal plane. The oscillatory ends of the upper and lower control arms are connected via first and second ball joints to an axle housing. The first ball joint is located rearward of the second ball joint and adjacent and adjacently inward of an upper end portion of a tire of a rear wheel. A rear one of the pivot ends of the lower control arm is located substantially on a straight line extending between the second ball joints for the left and right lower control arms.
摘要:
A lower arm and upper links of a double wishbone type suspension are arranged so that the resulting king pin axis about which a road wheel is pivotal, intersects the wheel rotational axis at or close to the wheel center so as to selectively minimize, neutralize or reverse the toe-out effect produced by a force which acts through the wheel center in the aft direction of the vehicle. The lateral rod which controls the orientation of the road wheel is arranged at a predetermined angle to control the amount of toe-in induced by the application of the above mentioned force and a force which acts laterally inboard along the wheel rotational axis.