In press molding, a colored stainless steel plate and a colored stainless steel coil which are excellent in galling resistance and moldability and have high strength in molded articles, and a method of manufacturing the same.

A color coating layer 11 is formed on the surface of a stainless steel plate 10 by a chemical coloring method or an electrolytic coloring method. Thereafter, a colored stainless steel plate 1 having the color coating layer is cold-rolled, the thickness of the color coating layer 11 is adjusted to 0.05 m or more to 1.0 m or less, and an entire plate thickness is adjusted to 0.5 mm or less. By the cold rolling a Vickers hardness Hv is 250 or more to 550 or less to form a deformed band 5. As surface roughness, an arithmetic average roughness Ra is adjusted to 0.05 m or more to 5.0 m or less. In this manner, the strength and rigidity of a thin colored stainless steel plate can be secured, and a color stainless steel plate 1 and a colored stainless steel coil which do not easily cause galling and are excellent in press moldability can be obtained.

The present invention relates to a sensor element for detecting hydrogen chloride (HCl) gas, a sensor device having the sensor element, and a method of manufacturing the sensor element, wherein s the sensor element includes: an ionic layer including a Ag ion obtained through ionization; an ion conductive layer, in which the Ag ion is conducted, the ion conductive layer being formed on the ionic layer; and a reactive layer, in which the Ag ion conducted from the ion conductive layer and HCl gas react with each other, the reactive layer being formed on the ion conductive layer. The sensor element detects HCl gas generated from insulting materials when fire occurs, thereby detecting an electrical fire and preventing gas and fire spreading.

A high-aspect ratio structure production method and an ultrasonic probe production method of the present invention include: forming, in a principal surface of a substrate, a plurality of pores each extending in a direction intersecting the principal surface; plugging, among the plurality of pores, one or more pores formed in a first region; and forming a recess in a second region by a wet etching process. A high-aspect ratio structure includes a grating having a plurality of convex portions, wherein each of the plurality of convex portions is provided with a plugging member plugging a plurality of pores formed therein in a thickness direction of the structure.

Technologies for a metal chassis for an electronic device are disclosed. A manufacturer may manufacture a chassis of an electronic device by machining a recess into a chassis preform and perform an anodization of the chassis. The manufacturer may machine the side of the chassis preform opposite the recess to a predefined thickness, and then perform a subsequent anodization. The predefined thickness is selected so that, after the subsequent anodization, there is a single anodized layer between the surface of the recess and the chassis surface on the opposite side. The single anodized layer is non-conductive, allowing electromagnetic signals of an antenna to pass through.

The present invention relates to a porous acupuncture needle and a method for manufacturing the same and, more specifically, to a porous acupuncture needle, which has micro-sized or nano-sized holes formed on the surface thereof to maximize the specific surface thereof, and a method for manufacturing the same.

This disclosure provides systems and methods for improved electro-enhancement of surfaces of workpieces. The systems and methods can include immersing a metal workpiece in a salt bath and applying a time-varying electric current that has periods of high current with periods of lower current between. The systems and methods provide borided metal workpieces that contain preferred borides on the surface and lack less preferred borides. For example, the systems and methods can provide borided steel having Fe.sub.2B and substantially lacking FeB on the surface.

This disclosure provides systems and methods for improved electro-enhancement of surfaces of workpieces. The systems and methods can include immersing a metal workpiece in a salt bath and applying a time-varying electric current that has periods of high current with periods of lower current between. The systems and methods provide borided metal workpieces that contain preferred borides on the surface and lack less preferred borides. For example, the systems and methods can provide borided steel having Fe.sub.2B and substantially lacking FeB on the surface.

A method of fabricating a part coated with a protective coating, the method including using micro-arc oxidation treatment to form a protective coating on the outside surface of a part, the part including a niobium matrix having metallic silicide inclusions present therein, the current passing through the part being controlled during the micro-arc oxidation treatment in order to subject the part to a succession of current cycles, the ratio of (quantity of positive charge applied to the part)/(quantity of negative charge applied to the part) lying in the range 0.80 to 1.6 for each current cycle.

The present disclosure relates to an anodising system for a component of a motor vehicle brake, comprising an electrolyte source which generates an electrolyte flow along a face to be anodised of the component, and a separating fluid source for generating a separating fluid flow along a face not to be anodised of the component. The disclosure furthermore relates to an anodising method.

A method of preventing corrosion of a battery current collector, comprising the steps of: providing an electrochemical battery comprising at least an anode, a cathode, and an electrolyte between the anode and the cathode; wherein: the cathode comprises a metal current collector and the electrolyte comprises a metal chelator, a negatively charged metal salt, and a solvent; performing charge/discharge on the electrochemical battery; wherein, the metal chelator in the electrolyte and the metal ions of the metal current collector, or the metal chelator in the electrolyte is co-chelated with both the metal ions of the metal current collector and the negative charge of the negatively charged metal salt to form an anti-corrosion layer on the metal current collector; by adding a chelating electrolyte as a protective layer, the metal current collector can be protected from electrolyte corrosion and the electrodes maintain high conductivity, thereby improving the efficiency of the battery.