公开(公告)号：US20240286314A1

公开(公告)日：2024-08-29

申请号：US18572811

申请日：2022-06-30

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tomohiro KANAZAWA ,  Kenshi TSUJI ,  Yui NAKAI ,  Tetsuya NAKAAZE

IPC: B28D5/04 ,  B28D5/00 ,  G01N3/32

CPC classification number: B28D5/045 ,  G01N3/32 ,  B28D5/0082 ,  G01N2203/0067 ,  G01N2203/0073

Abstract: A metal wire includes tungsten or a tungsten alloy. When a fatigue test is conducted on the metal wire at a maximum stress of 4400 MPa in accordance with Japanese Industrial Standard (JIS) C6821, a total number of cycles required to break the metal wire is at least 20,000 cycles.

公开(公告)号：US20230366068A1

公开(公告)日：2023-11-16

申请号：US18033540

申请日：2021-10-04

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tomohiro KANAZAWA ,  Yoshihiro KODAMA ,  Naoki KOHYAMA ,  Tatsuya TANIWAKI ,  Kenshi TSUJI ,  Tomohiro SAWA ,  Tetsuya NAKAAZE

IPC: C22C27/04 ,  C22C1/04 ,  C22F1/18

CPC classification number: C22C27/04 ,  C22C1/045 ,  C22F1/18

Abstract: A metal wire has a total elongation of at least 5% and at most 16%; a tensile strength of at least 1600 MPa and at most 2400 MPa; and a diameter of less than 40 μm.

公开(公告)号：US20230227951A1

公开(公告)日：2023-07-20

申请号：US17925071

申请日：2021-05-26

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tomohiro KANAZAWA ,  Naoki KOHYAMA ,  Kenshi TSUJI ,  Yoshihiro IGUCHI ,  Yui NAKAI ,  Tetsuya NAKAAZE

IPC: C22C27/04 ,  C22C1/04 ,  C22F1/18

CPC classification number: C22C27/04 ,  C22C1/045 ,  C22F1/18 ,  C25F3/26

Abstract: A tungsten wire that contains tungsten or a tungsten alloy is provided. An average width of surface crystal grains in a direction perpendicular to an axis of the tungsten wire is at most 98 nm. The tungsten wire has a tensile strength of at least 3900 MPa. The tungsten wire has a diameter of at least 100 μm and at most 225 μm.