摘要:
The electrically heated catalytic converter of the present invention includes a catalyst substrate, which is formed as a scroll-like cylindrical laminated assembly. The assembly is formed by laminating a thin corrugated and plain metal sheets and winding the metal sheets together around a center electrode. The outermost layer of the laminated assembly is connected to an outer electrode. The corrugated metal sheet has an insulating coating made of an alumina, and the plain metal sheet is uninsulated. Local conductive connections form between the thin metal sheets by soldering strips of zirconium solder foils between the layers of the thin metal sheets. Since zirconium has a larger reducing capability than aluminum, the alumina in the insulating coating is reduced by zirconium and precipitates at the local conductive connections. Therefore, the plain and corrugated metal sheet are electrically connected to each other at the local conductive connections. The solder foils in the respective layers are arranged in a configuration where a strip of solder foil in one layer overlaps with strips of solder foils in adjoining layers only at its ends, and does not overlap with strips of solder foils in the adjacent layers when viewed radially. Since the solder foils overlap only by a small area, electric current flowing through the local conductive connections concentrates in the overlap area and produces hot spots. The overall resistance of the electric paths can be adjusted by varying the solder strip length.
摘要:
Disclosed is a production method of a lithium tetrafluoroborate solution for use as a lithium battery electrolytic solution, including: a reaction step of forming lithium tetrafluoroborate by reaction of lithium fluoride and boron trifluoride in a chain carbonate ester solvent and thereby obtaining a reaction solution of the lithium tetrafluoroborate dissolved in the chain carbonate ester solvent; a water removal step of adding a water removing agent to the reaction solution; an acidic impurity removal step of removing an acidic impurity component from the reaction solution by concentrating the reaction solution after the water removal step; and a dilution step of diluting the concentrated solution after the acidic impurity removal step. It is possible by this method to obtain the lithium tetrafluoroborate solution whose acidic impurity content and water content are reduced to be 50 mass ppm or lower and 15 mass ppm or lower, respectively.
摘要:
In a manufacturing process of a transistor including an oxide semiconductor film, oxygen doping treatment is performed on the oxide semiconductor film, and then heat treatment is performed on the oxide semiconductor film and an aluminum oxide film provided over the oxide semiconductor film. Consequently, an oxide semiconductor film which includes a region containing more oxygen than a stoichiometric composition is formed. The transistor formed using the oxide semiconductor film can have high reliability because the amount of change in the threshold voltage of the transistor by a bias-temperature stress test (BT test) is reduced.
摘要:
There is provided a method for producing an electrolyte solution for lithium ion batteries, in which lithium hexafluorophosphate is used as an electrolyte, comprising the steps of (a) reacting phosphorus trichloride, chlorine and lithium chloride in a nonaqueous organic solvent; and (b) reacting a reaction product of the step (a) formed in the solvent, with hydrogen fluoride.
摘要:
Disclosed is a production method of a lithium tetrafluoroborate solution for use as a lithium battery electrolytic solution, including: a reaction step of forming lithium tetrafluoroborate by reaction of lithium fluoride and boron trifluoride in a chain carbonate ester solvent and thereby obtaining a reaction solution of the lithium tetrafluoroborate dissolved in the chain carbonate ester solvent; a water removal step of adding a water removing agent to the reaction solution; an acidic impurity removal step of removing an acidic impurity component from the reaction solution by concentrating the reaction solution after the water removal step; and a dilution step of diluting the concentrated solution after the acidic impurity removal step. It is possible by this method to obtain the lithium tetrafluoroborate solution whose acidic impurity content and water content are reduced to be 50 mass ppm or lower and 15 mass ppm or lower, respectively.
摘要:
Disclosed is a container that is capable of maintaining articles requiring thermal management at a prescribed temperature without being influenced by the outside air temperature, and that is capable of storing and transporting the articles. The constant-temperature storage container is equipped with a heat-insulating box, and two or more types of cold-storing materials or heat-storing materials disposed therein; has a latent-heat first cold-storing or heat-storing material (a) disposed in a solid state adjacent to an article being kept cool or warm, and a latent-heat second cold-storing or heat-storing material (b) disposed in a molten state on the exterior of the first cold-storing or heat-storing material (a); and the solidifying and melting temperature of the first cold-storing or heat-storing material (a) exceeds 0° C. The constant-temperature storage container is capable of maintaining the article being kept cool or warm in an arbitrary temperature range exceeding 0° C. for long periods of time.
摘要:
In a structure where an electronic component is mounted on a glass base material, an external electrode is provided on an opposite side to the component mounted on the base, and a through electrode and the base are welded to each other at a temperature equal to or higher than a glass softening point, electrical conduction is ensured between the electronic component and the external electrode. An electronic device includes a base, a through electrode which pass through the base and has a metal film formed on both end surfaces after an insulating material on the surface is removed by polishing, an electronic component which is provided on one surface of the through electrode through a connection portion, an external electrode which is provided on an opposite side to a side of the base on which the electronic component is provided, and a cap which protects the electronic component on the base.
摘要:
To provide an improved solderability for mounting an electronic component onto a circuit board, a package of an electronic component (1) is formed by bonding together a base (3) made of glass and a lid (2). Outer electrodes (8) and (18) are formed on a bottom surface of the base (3), and the outer electrodes (8) and (18) are respectively connected to through electrodes (7) and (17). The outer electrodes (8) and (18) each have a laminated structure of three CrAu layers, that is, from a Cr layer (first layer) to an Au layer (sixth layer). When the outer electrodes (8) and (18) are soldered onto a circuit board, the Au layers as the second, fourth, and sixth layers are dissolved into solder, whereas the Cr layers as the third and fifth layers, which hardly form an intermetallic compound with solder, are separated to remain in solder.
摘要:
A control system includes a remote control apparatus and a controlled apparatus controlled by the remote control apparatus. The controlled apparatus is connected to first and second external apparatuses. The controlled apparatus includes a receiving unit and a control unit. The receiving unit receives a remote control signal from the remote control apparatus. The control unit (a) selects one of the first and second external apparatuses according to the remote control signal, (b) checks an operating state of the selected external apparatus before the controlled apparatus transmits a control command corresponding to the remote control signal to the selected external apparatus, and (c) controls the controlled apparatus to transmit the control command to the selected external apparatus if it is determined from the checked operating state that the control command can be transmitted to the selected external apparatus.
摘要:
A laser diode which can be easily assembled at low material cost is provided. A first light emitting device having a laser structure on a substrate, a second light emitting device having laser structures on a substrate, and a support base are provided. The first light emitting device and the second light emitting device are layered in this order on the support base in a manner that the respective laser structures of the first light emitting device and the second light emitting device are opposed to each other. A substrate side of the first light emitting device and a laser structure side of the second light emitting device are electrically connected to the support base.