公开(公告)号：US20190207331A1

公开(公告)日：2019-07-04

申请号：US16304010

申请日：2017-05-12

Applicant: Hitachi, Ltd.

Inventor： Yota ICHIKI ,  Kazutaka OKAMOTO

IPC: H01R4/68 ,  H01B12/02 ,  H01R43/00

Abstract: The present invention provides a joint portion of MgB2 superconducting wires having exceptional energization characteristics and high reliability. The joint portion of the superconducting wires according to the present invention has a space for filling Mg into a portion inside a container or pressurizing member, the portion not being adjacent to an MgB2 sintered body.

公开(公告)号：US20180354843A1

公开(公告)日：2018-12-13

申请号：US16068759

申请日：2017-01-11

Applicant: HITACHI, LTD.

Inventor： Takashi NAITO ,  Takuya AOYAGI ,  Tatsuya MIYAKE ,  Takeshi KONDO ,  Hiroki KANEKO ,  Kazutaka OKAMOTO

IPC: C03C8/24 ,  C03C3/12 ,  C03C3/21 ,  C03C14/00 ,  C03C8/16 ,  C03C8/18 ,  C03C27/06 ,  C03C17/04 ,  C03C17/00

CPC classification number: C03C8/24 ,  C03C3/12 ,  C03C3/122 ,  C03C3/125 ,  C03C3/21 ,  C03C8/02 ,  C03C8/16 ,  C03C8/18 ,  C03C8/20 ,  C03C14/004 ,  C03C17/007 ,  C03C17/04 ,  C03C27/06 ,  C03C2205/00 ,  C03C2218/11 ,  H01J9/02 ,  H01J9/24 ,  H01J11/22 ,  H01J11/48 ,  H01L23/02 ,  H01L23/10 ,  H01L31/0224 ,  H01L31/022425 ,  H01L51/50 ,  H01L51/5246 ,  H01L2224/16225 ,  H01L2924/16152 ,  H03H9/10 ,  H05B33/04 ,  H05B33/26

Abstract: The purpose of the present invention is to provide a lead-free glass composition in which crystallization is suppressed and which has a low softening point. This lead-free glass composition is characterized by containing silver oxide, tellurium oxide and vanadium oxide, and further containing at least one compound selected from among yttrium oxide, lanthanum oxide, cerium oxide, erbium oxide, ytterbium oxide, aluminum oxide, gallium oxide, indium oxide, iron oxide, tungsten oxide and molybdenum oxide as an additional component, and in that the content values (mol %) of silver oxide, tellurium oxide and vanadium oxide satisfy the relationships Ag2O>TeO2≥V2O5 and Ag5O≤2V2O5 when calculated in terms of the oxides, and in that the content of TeO2 is 25-37 mol. %.