公开(公告)号：US2454031A

公开(公告)日：1948-11-16

申请号：US54715544

申请日：1944-07-29

Applicant: GEN ELECTRIC

Inventor： BONDLEY RALPH J

IPC: H01J23/05

CPC classification number: H01J23/05

公开(公告)号：US2450763A

公开(公告)日：1948-10-05

申请号：US49344443

申请日：1943-07-03

Applicant: MCNALL JOHN W

Inventor： MCNALL JOHN W

IPC: H01J23/05

CPC classification number: H01J23/05

公开(公告)号：US2414605A

公开(公告)日：1947-01-21

申请号：US48675243

申请日：1943-05-13

Applicant: WESTINGHOUSE ELECTRIC CORP

Inventor： OKRESS ERNEST C ,  NELSON DONALD E

IPC: H01J23/05

CPC classification number: H01J23/05

公开(公告)号：US2411601A

公开(公告)日：1946-11-26

申请号：US41299341

申请日：1941-09-30

Applicant: RAYTHEON MFG CO

Inventor： SPENCER PERCY L

IPC: H01J23/05 ,  H01J43/02

CPC classification number: H01J23/05 ,  H01J43/02

公开(公告)号：US2408239A

公开(公告)日：1946-09-24

申请号：US49468543

申请日：1943-07-14

Applicant: RAYTHEON MFG CO

Inventor： SPENCER PERCY L

IPC: H01J23/05

CPC classification number: H01J23/05

公开(公告)号：US20220181112A1

公开(公告)日：2022-06-09

申请号：US17373565

申请日：2021-07-12

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Hisashi YOSHIDA ,  Hisao MIYAZAKI ,  Shigeya KIMURA

IPC: H01J23/05 ,  H01J25/50

Abstract: According to one embodiment, an electron-emitting electrode includes a first member, a first diamond member, and a second diamond member. A surface of the first member includes a first region and a second region. The first diamond member is provided at the first region. The first diamond member includes a first element that includes at least one of nitrogen, phosphorus, arsenic, antimony, and bismuth. The second diamond member is provided at the second region. The second diamond member includes a second element that includes at least one of boron, aluminum, gallium, and indium.

公开(公告)号：US10388484B2

公开(公告)日：2019-08-20

申请号：US15757343

申请日：2016-12-30

Applicant: BEIJING UNIVERSITY OF TECHNOLOGY

Inventor： Jinshu Wang ,  Liran Dong ,  Jie Zhang ,  Mingchuang Tian ,  Jingchao Liu ,  Xiaoyang Chen ,  Xiao Han ,  Liyang Xiao

IPC: H01S4/00 ,  H01J23/05 ,  H01J9/04 ,  H01J23/04 ,  B22F3/24 ,  C23C8/20 ,  C23C8/80 ,  B22F5/12 ,  C22C32/00 ,  H05B6/66

Abstract: A carburized La2O3 and Lu2O3 co-doped Mo filament cathode is made from lanthanum oxide (La2O3) and lutetium oxide (Lu2O3) doped molybdenum (Mo) powders, the lanthanum oxide (La2O3) and lutetium oxide (Lu2O3) doped molybdenum (Mo) powders contain La2O3, Lu2O3 and Mo with the total concentration of La2O3 and Lu2O3 being 2.0-5.0 wt. % and the rest being Mo.

公开(公告)号：US10167536B2

公开(公告)日：2019-01-01

申请号：US15784416

申请日：2017-10-16

Applicant: KABUSHIKI KAISHA TOSHIBA ,  TOSHIBA MATERIALS CO., LTD.

Inventor： Shinichi Yamamoto ,  Kayo Nakano ,  Hiromichi Horie ,  Takashi Sano ,  Yoshiko Minami ,  Satoshi Yamaguchi

IPC: C22C27/04 ,  B22F3/10 ,  C22C1/04 ,  C22C43/00 ,  H01J23/05 ,  C22F1/18

Abstract: According to one embodiment, a tungsten alloy includes a W component and a Hf component including HfC. A content of the Hf component in terms of HfC is 0.1 wt % or more and 3 wt % or less.

公开(公告)号：US20180254164A1

公开(公告)日：2018-09-06

申请号：US15757343

申请日：2016-12-30

Applicant: BEIJING UNIVERSITY OF TECHNOLOGY

Inventor： JINSHU WANG ,  LIRAN DONG ,  JIE ZHANG ,  MINGCHUANG TIAN ,  JINGCHAO LIU ,  XIAOYANG CHEN ,  XIAO HAN ,  LIYANG XIAO

IPC: H01J23/05 ,  B22F3/24 ,  C23C8/20 ,  H01J9/04

CPC classification number: H01J23/05 ,  B22F3/24 ,  B22F5/12 ,  B22F2003/241 ,  B22F2301/20 ,  B22F2302/25 ,  B22F2998/10 ,  B22F2999/00 ,  C22C32/0031 ,  C23C8/20 ,  C23C8/80 ,  H01J9/04 ,  H01J9/042 ,  H01J23/04 ,  H05B6/66 ,  H05B2206/04 ,  Y10T29/49002 ,  B22F3/02 ,  B22F3/10 ,  B22F3/17 ,  B22F2201/30

Abstract: A carburized La2O3 and Lu2O3 co-doped Mo filament cathode and its fabrication method, which belongs to the technical field of rare earth-refractory metal cathodes. The rare earth oxides are La2O3 and Lu2O3, and the total concentration of rare earth oxides ranges from 2.0-5.0 wt. %. The La2O3 and Lu2O3 co-doped molybdenum oxide powers are prepared by Sol-Gel method. La2O3 and Lu2O3 co-doped Mo powers are prepared by two calcining steps. Then pressing and sintering the mixed powders to obtain the molybdenum rods; operating mechanical and heat processes of the molybdenum rods to obtain molybdenum filament. Operating electrolytic cleaning, straightening, winding modeling and cutting treatments with Mo filament to obtain the un-carburized La2O3 and Lu2O3 co-doped Mo cathode. And then carburize the filament cathode at a high temperature for a short time to obtain a cathode with high carburization degree. And then operate the out-gassing treatment and activation treatment with the cathode at a high temperature to obtain an environmental and non-radioactive cathode with good emission current and emission stability.

公开(公告)号：US09653246B2

公开(公告)日：2017-05-16

申请号：US14950818

申请日：2015-11-24

Applicant: Toshiba Hokuto Electronics Corporation

Inventor： Naoya Kato

IPC: H01J25/50 ,  H01J23/04 ,  H01J25/52 ,  H01J25/587 ,  H01J23/05 ,  H01J23/10

CPC classification number: H01J25/50 ,  H01J23/04 ,  H01J23/05 ,  H01J23/10 ,  H01J25/52 ,  H01J25/587

Abstract: To provide a magnetron improved in high efficiency and load stability while suppressing costs. By shortening the height of vane Vh so that the ratio of the height of vane Vh to a gap between end hats EHg (EHg/Vh) satisfies a condition 1.12≦EHg/Vh≦1.26, an input side pole piece-vane gap IPpvg becomes larger than an output side pole piece-vane gap OPpvg, and an input side end hat-vane gap IPevg becomes larger than an output side end hat-vane gap OPevg, load stability at high efficiency can be improved while shortening the height of vane Vh. Therefore, it is possible to provide a magnetron improved in high efficiency and load stability while suppressing costs.