Abstract: Provided is a high-Mn steel having excellent low-temperature toughness and excellent surface characteristics. A high-Mn steel comprises: a chemical composition containing, in mass %, C: 0.100 to 0.700%, Si: 0.05 to 1.00%, Mn: 20.0 to 35.0%, P: ?0.030%, S: ?0.0070%, Al: 0.010 to 0.070%, Cr: 0.50 to 5.00%, N: 0.0050 to 0.0500%, O: ?0.0050%, Ti: ?0.005%, and Nb: ?0.005%, with a balance consisting of Fe and inevitable impurities; and a microstructure having austenite as a matrix, wherein in the microstructure, a Mn concentration of a Mn-concentrated portion is 38.0% or less, and an average KAM value is 0.3 or more, yield stress is 400 MPa or more, absorbed energy vE?196 in a Charpy impact test at ?196° C. is 100 J or more, and percent brittle fracture is less than 10%.

Abstract: A metallic roof material 1 according to the present invention comprises: a front substrate 10 made of a metal sheet, the front substrate 10 comprising a body portion 100 formed into a box shape; a back substrate 11 arranged on a back side of the front substrate 10 so as to cover an opening of the body portion 100; and a core material 12 filled between the body portion 100 and the back substrate 11, the metallic roof material 1 being tightened to a roof base by driving at least one tightening member into the body portion 100, wherein a top plate portion 101 of the body portion 100 comprises at least one protruding rib 3 comprised of at least one protrusion 30 disposed along a side of a polygon or along a circle, and wherein the metallic roof material 1 is configured such that the tightening member is driven into an inner region 3a of the protruding rib 3.

Abstract: The present invention relates to a metal roofing material 1 that is arranged on an eave-side metal roofing material in an eave-ridge direction 6 of a roof so as to overlap the metal roofing material and the eave-side metal roofing material. The metal roofing material includes a front substrate 2 made of a metal sheet and including a body portion 20 formed in a box shape; a back substrate 3 arranged on the back side of the front substrate 2 so as to cover an opening of the body portion 20; a core material 4 filled between the body portion 20 and the back substrate 3; and at least one plate reinforcing member 5 that is embedded in the core material 4 at a position closer to the back substrate 3 than a top plate of the body portion 20 or that is disposed in contact with the outer surface of the back substrate 3.

Abstract: A metallic roof material 1 according to the present invention comprises: a front substrate 10 made of a metal sheet, the front substrate 10 comprising a body portion 100 formed into a box shape; a back substrate 11 arranged on a back side of the front substrate 10 so as to cover an opening of the body portion 100; and a core material 12 filled between the body portion 100 and the back substrate 11, the metallic roof material 1 being tightened to a roof base by driving at least one tightening member into the body portion 100, wherein a top plate portion 101 of the body portion 100 comprises at least one protruding rib 3 comprised of at least one protrusion 30 disposed along a side of a polygon or along a circle, and wherein the metallic roof material 1 is configured such that the tightening member is driven into an inner region 3a of the protruding rib 3.

Abstract: A body portion 100 of a front substrate 10 includes first side surfaces 105 and second side surfaces 106, each of the second side surfaces 106 being arranged at a position protruding toward the outer side along a width direction 100a than the first side surface 105. Each of the first side surfaces 105 includes a side flange 105a. A protruding width of the side flange 105a from the first side surface 105 is equal to or less than a protruding width of the second side surface 106 from the first side surface 105. A metal roofing member 1 is arranged on a roof base while abutting at least the second side surface 106 against a second side surface of other metal roofing member.

Abstract: A metal roofing material according to the present invention comprises: a front substrate 2 having a body portion 20, the body portion 20 being comprised of a metal sheet and being formed into a box shape; a back substrate disposed on a back side of the front substrate 2 so as to cover an opening of the body portion 20; a core material filled between the body portion 20 and the back substrate, the metal roofing material being arranged side by side on a roof base together with other metal roofing materials, wherein at least one edge indicator 22 in the form of protrusion is provided at an edge portion of a top plate 20a of the body portion 20.

Abstract: A metal roofing member 1 is disposed side by side with another metal roofing member on a roof base. The metal roofing member 1 has a box-shaped front substrate 10 made of a metal sheet, a rear substrate 11 disposed on the rear side of the front substrate 10, so as to cover an opening of the front substrate 10, and a core material 12 made from a foam resin and filled in between the front substrate 10 and the rear substrate 11. The front substrate 10 results from forming the metal sheet into a box shape. The front substrate 10 has a side wall portion that is continuous in the circumferential direction and is formed by performing drawing or bulging processing on the metal sheet. The front substrate 10 has a height of 4 mm to 8 mm.

Abstract: A body portion 100 of a front substrate 10 includes first side surfaces 105 and second side surfaces 106, each of the second side surfaces 106 being arranged at a position protruding toward the outer side along a width direction 100a than the first side surface 105. Each of the first side surfaces 105 includes a side flange 105a. A protruding width of the side flange 105a from the first side surface 105 is equal to or less than a protruding width of the second side surface 106 from the first side surface 105. A metal roofing member 1 is arranged on a roof base while abutting at least the second side surface 106 against a second side surface of other metal roofing member.

Abstract: A metal roofing material according to the present invention comprises: a front substrate 2 having a body portion 20, the body portion 20 being comprised of a metal sheet and being formed into a box shape; a back substrate disposed on a back side of the front substrate 2 so as to cover an opening of the body portion 20; a core material filled between the body portion 20 and the back substrate, the metal roofing material being arranged side by side on a roof base together with other metal roofing materials, wherein at least one edge indicator 22 in the form of protrusion is provided at an edge portion of a top plate 20a of the body portion 20.

Abstract: The present invention relates to a metal roofing material 1 that is arranged on an eave-side metal roofing material in an eave-ridge direction 6 of a roof so as to overlap the metal roofing material and the eave-side metal roofing material. The metal roofing material includes a front substrate 2 made of a metal sheet and including a body portion 20 formed in a box shape; a back substrate 3 arranged on the back side of the front substrate 2 so as to cover an opening of the body portion 20; a core material 4 filled between the body portion 20 and the back substrate 3; and at least one plate reinforcing member 5 that is embedded in the core material 4 at a position closer to the back substrate 3 than a top plate of the body portion 20 or that is disposed in contact with the outer surface of the back substrate 3.

Abstract: A metal roofing member 1 has a front substrate 10, a rear substrate 11 and a core material 12. The front substrate 10 is made of a metal sheet. In the front substrate 10, a box-shaped body portion 100 and a flange portion 110 extending from the body portion 100 are provided. The flange portion 110 is formed by folding back, over the rear side of the front substrate 10, of a metal sheet 111 extending outwards of the body portion 100 in a direction 100b perpendicular to a height direction 100a of the body portion 100, from a lower edge of the body portion 100, in such a manner that the metal sheet 111 wraps around the rear substrate 11. The metal roofing member 1 is disposed on a roof base, with the flange portion 110 butting against a flange portion 110 of another metal roofing member.

Abstract: There is provided a static electricity removal structure in a low-humidity space, in which static electricity can be removed with high efficiency in the low-humidity space by using a static electricity removal device. A low-humidity space is configured such that dehumidified air is supplied from one side of the low-humidity space into the low-humidity space through a blowout surface material in which ventilation pore is formed, and exhausting is performed from the other side of the low-humidity space, which opposes the blowout surface material. A static electricity removal device is disposed on a downstream side of the blowout surface material.

Abstract: A metal roofing member 1 has a front substrate 10, a rear substrate 11 and a core material 12. The front substrate 10 is made of a metal sheet. In the front substrate 10, a box-shaped body portion 100 and a flange portion 110 extending from the body portion 100 are provided. The flange portion 110 is formed by folding back, over the rear side of the front substrate 10, of a metal sheet 111 extending outwards of the body portion 100 in a direction 100b perpendicular to a height direction 100a of the body portion 100, from a lower edge of the body portion 100, in such a manner that the metal sheet 111 wraps around the rear substrate 11. The metal roofing member 1 is disposed on a roof base, with the flange portion 110 butting against a flange portion 110 of another metal roofing member.

Abstract: A metal roofing member 1 is disposed side by side with another metal roofing member on a roof base. The metal roofing member 1 has a box-shaped front substrate 10 made of a metal sheet, a rear substrate 11 disposed on the rear side of the front substrate 10, so as to cover an opening of the front substrate 10, and a core material 12 made from a foam resin and filled in between the front substrate 10 and the rear substrate 11. The front substrate 10 results from forming the metal sheet into a box shape. The front substrate 10 has a side wall portion that is continuous in the circumferential direction and is formed by performing drawing or bulging processing on the metal sheet. The front substrate 10 has a height of 4 mm to 8 mm.

Abstract: [Problem] To provide a dye-sensitized solar cell having excellent photoelectric conversion efficiency and capable of saving the amount of a catalyst used, by using an inexpensive metal material showing excellent corrosion resistance in an electrolyte of a dye-sensitized solar cell for a counter electrode. [Means for Resolution] A dye-sensitized solar cell comprising a photoelectrode comprising a light-transmitting and conductive material and a semiconductor layer having a sensitizing dye supported thereon, formed on the surface of the light-transmitting and conductive material, an electrolyte and a counter electrode, wherein the counter is constituted of a material comprising a substrate comprising stainless steel containing Cr: 16% by mass or more, and Mo: 0.3% by mass or more, and a catalyst thin film layer formed on the surface of the substrate, and the semiconductor layer of the photoelectrode and the catalyst thin film, layer of the counter electrode face through the electrolyte.

Abstract: A stainless steel sheet useful as a separator for a low-temperature fuel cell has the surface state that a lot of fine projections (p) stand close together around many fine pits (d) formed over a whole surface. The surface state is realized by alternating electrolytic etching in a ferric chloride solution. When the stainless steel separator is built in a fuel cell, contact resistance between the separator and a graphite electrode is kept at a lower level even in a corrosive atmosphere. Consequently, the fuel cell can be driven with high power-generating efficiency over a long term even under severely corrosive conditions without generation of massive Joule heat.

Abstract: A stainless steel sheet useful as a separator for a low-temperature fuel cell has the surface state that a lot of fine projections (p) stand close together around many fine pits (d) formed over a whole surface. The surface state is realized by alternating electrolytic etching in a ferric chloride solution. When the stainless steel separator is built in a fuel cell, contact resistance between the separator and a graphite electrode is kept at a lower level even in a corrosive atmosphere. Consequently, the fuel cell can be driven with high power-generating efficiency over a long term even under severely corrosive conditions without generation of massive Joule heat.

Abstract: A stainless steel sheet useful as a separator for a low-temperature fuel cell has the surface state that a lot of fine projections (p) stand close together around many fine pits (d) formed over a whole surface. The surface state is realized by alternating electrolytic etching in a ferric chloride solution. When the stainless steel separator is built in a fuel cell, contact resistance between the separator and a graphite electrode is kept at a lower level even in a corrosive atmosphere. Consequently, the fuel cell can be driven with high power-generating efficiency over a long term even under severely corrosive conditions without generation of massive Joule heat.

Abstract: A display device has a configuration in which a translucent white filling material and a powder particle light storage material are mixed and filled in a space formed by sandwiching a spacer plate having a predetermined thickness between a display plate and a reflector plate. Light emitted by particles of the light storage material is scattered by the translucent white filling material. Thus, high luminance light can be evenly emitted from the entire surface of the display plate. Moreover, viscosity of the filling material enables manufacturing while maintaining a state where the particles of the light storage material are averagely dispersed. Accordingly, the device can be manufactured by use of the spacer plate having a large thickness. Consequently, a display device having high luminance and a long light emission time can be provided by filling a large amount of the light storage material.