摘要:
A superconductive oxide material having an infinite layer structure and having the following formula:A.sub.p B.sub.q Cu.sub.2 O.sub.4.+-.rwherein A and B are different and each represent an element selected from lanthanoid elements and elements belonging to Groups IA, IIA and IIIA of the Periodic Table, p is between 0.9 and 1.1, q is between 0.9 and 1.1 and r is between 0 and 0.6. The oxide material has a crystal structure belonging to a tetragonal system of P4/mmm and 1-123 having the following lattice parameters:3.8.ANG..ltoreq.a.ltoreq.4.0.ANG.7.6.ANG..ltoreq.c.ltoreq.8.0.ANG.or to an orthorhombic system of Pmmm and I-47 having the following lattice parmeters:3.8.ANG..ltoreq.a.ltoreq.3.95.ANG.3.82.ANG..ltoreq.b.ltoreq.4.0.ANG.7.6.ANG..ltoreq.c.ltoreq.8.0.ANG..
摘要翻译:具有无限层结构并具有下式的超导氧化物材料:ApBqCu2O4 +/- r其中A和B不同,并且各自表示选自镧系元素和元素周期表中IA,IIA和IIIA族的元素,p 在0.9和1.1之间,q在0.9和1.1之间,r在0和0.6之间。 氧化物材料具有属于P4 / mmm和1-123的四方晶系的晶体结构,具有以下晶格参数:3.8 ANGSTROM = a = 4.0 ANGSTROM 7.6 ANGSTROM = c = 8.0 ANGSTROM或 具有以下格子参数的Pmmm和I-47的正交系统:3.8 ANGSTROM = a = 3.95 ANGSTROM 3.82 ANGSTROM = b = 4.0 ANGSTROM 7.6 ANGSTROM = c = 8.0 ANGSTROM。
摘要:
Disclosed herein are high-temperature oxide superconductors of RBa.sub.2 Cu.sub.4 O.sub.8 type, with Ba partly replaced by Sr or Ca, or with R and Ba partly replaced by Ca and Sr, respectively, as represented by the chemical composition formula of R(Ba.sub.1-y Sr.sub.y).sub.2 Cu.sub.4 O.sub.8 or R(Ba.sub.1-z Ca.sub.z).sub.2 Cu.sub.4 O.sub.8 or (R.sub.1-x Ca.sub.x) (Ba.sub.1-y Sr.sub.y).sub.2 Cu.sub.4 O.sub.8. They exhibit superconductivity at high temperatures. Especially, the last one exhibits superconductivity at a higher temperature than the former two. All of them can be made with a less amount of Ba as a deleterious substance, and the first two have improved sinterability. The best results are obtained when they are produced by the process involving the hot hydrostatic pressure treatment of the mixture of raw materials at 850.degree.-1100.degree. C. in an atmosphere composed of an inert gas and oxygen. The process permits a wider selection of Ba raw materials.
摘要:
An oxide superconductor comprises a composition represented by the composition formula: (Nd.sub.x --Ce.sub.y --L.sub.z).sub.2 CuO.sub.4-d (wherein L is an element selected from Ca and Mg, and x+y+z=1). The compositions of Nd, Ce and L of the oxide superconductor corresponds to a point falling inside an area of Nd--Ce--L ternary diagram surrounded by straight lines (A-B), (B-C), (C-D) and (D-A) connecting point (A) with point (B), point (B) with point (C), point (C) with point (D) and point (D) with point (A), respectively, the points (A), (B), (C) and (D) being points (x=1, y=0, z=0), (x=0.4, y=0.6, z=0), (x=0.4, y=0.3, z=0.3) and (x=0.1, y=0, z=0.9), respectively, in the Nd--Ce--L ternary diagram. Above-described Nd--Ce--L--Cu--O oxides can exhibit superconductivity within a wide range of composition when heat-treated in an atmosphere of nitrogen.
摘要:
A superconductive material is disclosed which has the following composition:(R.sub.1-x Ca.sub.x)(Ba.sub.1-y La.sub.y).sub.2 Cu.sub.4 O.sub.8wherein R is at least one element selected from Y, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb and Lu, x is a number in the range of 0-0.3 and y is a number in the range of 0.001-0.3 with the proviso that y is not greater than 0.2 when x is not 0.
摘要:
Provided is an electrical element package, comprising an element substrate on which an electrical element is provided, a sealing substrate provided at a distance from a surface of the element substrate on a side of the electrical element so as to be opposed to the element substrate, and a glass frit for hermetically sealing a gap between the element substrate and the sealing substrate so as to surround the electrical element, wherein the electrical element package comprises a protective film for protecting an electrode from laser light applied in welding the glass frit, the protective film being provided between the element substrate and the glass frit.
摘要:
Provided is a reflection member including a silver reflective coating and having excellent thermal resistance. A reflection member (1) includes a reflection member body (11), a silver reflective coating (13), and a first protective film (15). The silver reflective coating (13) is formed on the reflection member body (11). The silver reflective coating (13) is made of silver or a silver-containing alloy. The first protective film (15) is formed on the silver reflective coating (13). The first protective film (15) is made of Ti, Ta or Nb.
摘要:
A charging cord for supplying electric current to an electric power storing device of an electric vehicle includes an electrical cable having a first end and a second end, the first end being operatively connected to the electric power storing device and the second end being adapted to be connected to an electrical power supply. A housing is provided for supporting the electrical cable along a predetermined length thereof. The housing includes a plurality of section members pivotally connected relative to each other for permitting limited lateral motion in a single plane to maintain the charging cord a predetermined distance above the ground surface.
摘要:
A copper alloy material includes, by mass %, Mg of 0.3 to 2%, P of 0.001 to 0.1%, and the balance including Cu and inevitable impurities. An area fraction of such crystal grains that an average misorientation between all the pixels in each crystal grain is less than 4° is 45 to 55% of a measured area, when orientations of all the pixels in the measured area of the surface of the copper alloy material are measured by an EBSD method with a scanning electron microscope of an electron backscattered diffraction image system and a boundary in which a misorientation between adjacent pixels is 5° or more is considered as a crystal grain boundary, and a tensile strength is 641 to 708 N/mm2, and a bending elastic limit value is 472 to 503 N/mm2.
摘要:
A method for producing a contour strip includes a rough rolling step for rolling a plate material to form a contour molding material, a slitting step for slitting the contour molding material at the middle position in the width direction of a thick portion or a thin portion at both side edge portions thereof to form a contour slit material, and a stretching step for stretching the contour slit material to obtain a contour strip. Rolling is carried out in the rough rolling step so that Δt is 0.01 or less, e is 0.15 or less, D1 is 0.4 or less, and a rough rolling management value X determined by Δt×e×D1 is 5×10−4 or less, assuming the deviation of plate thickness at a thin portion from a target value is Δt (mm), an actual measurement of the radius of curvature at a corner formed by the side surface and the top surface of a tick portion is e (mm), and an actual measurement of curvature per meter-length of the contour molding material is D1 (mm), the contour molding material is cut in the slitting step so that an actual measurement |A−B| (mm) of the difference in the width from the side edge of the thick portion or thin portion between both side edge portions is 0.08 or less, and the contour slit material is stretched in the stretching step so that an actual measurement D2 (mm) of curvature per meter-length of the contour molding strip is 0.13 or less.