中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

39 records (took 0.023 seconds)

    32.
    发明专利
    未知

    公开(公告)号：FR2607616A1

    公开(公告)日：1988-06-03

    申请号：FR8616735

    申请日：1986-12-01

    Applicant: FRAMATOME SA ,  COGEMA

    Inventor： HERTZ DOMINIQUE

    IPC: G21C3/07 ,  G21C3/06 ,  G21C21/02

    Abstract: For improving the corrosion resistance of the sheaths of fuel rods used in water cooled and moderated reactors, part at least of the outer surface of the sheath is coated with a dense and adhering carbon layer having a thickness of from 0.1 mu to 5 mu . The layer may be deposited by radiofrequency reactive sputtering in a lower alkyl containing atmosphere.

    34.
    发明专利
    未知

    公开(公告)号：DE69505842T2

    公开(公告)日：1999-04-29

    申请号：DE69505842

    申请日：1995-11-29

    Applicant: FRAMATOME SA ,  COGEMA

    Inventor： HERTZ DOMINIQUE ,  BELMONTE THIERRY ,  GAVILLET JEROME ,  MICHEL HENRI

    IPC: G21C3/06 ,  C23C16/02 ,  C23C16/40 ,  C23C16/452 ,  G21C3/326 ,  G21C3/34 ,  C23C16/44 ,  G21C3/00

    Abstract: PCT No. PCT/FR95/01576 Sec. 371 Date Oct. 28, 1997 Sec. 102(e) Date Oct. 28, 1997 PCT Filed Nov. 29, 1995 PCT Pub. No. WO96/17105 PCT Pub. Date Jun. 6, 1996Surface preoxidation of the substrate is carried out by bringing the substrate into contact with an oxidizing gas excited by a cold plasma, the substrate being situated in the flowing afterglow of the cold plasma used to excite the oxidizing element and being heated to an oxidation temperature of less than 500 DEG C. A metal oxide is formed at the surface of the preoxidized substrate by heterogeneous oxidation of a metal halide with a gas mixture including an oxidizing element activated by a cold plasma. The oxidizing gas mixture is brought into contact with the halide as directly as possible in the vicinity of the substrate arranged in the far flowing afterglow of the cold plasma. The cold plasma is preferably generated by microwaves. The process can be used in particular for producing a protective coating on a cladding tube of a nuclear fuel rod.

    GRAPPE DE COMMANDE ABSORBANTE POUR REACTEUR NUCLEAIRE.
    35.
    发明专利
    GRAPPE DE COMMANDE ABSORBANTE POUR REACTEUR NUCLEAIRE. 未知

    公开(公告)号：BE1010993A3

    公开(公告)日：1999-03-02

    申请号：BE9501002

    申请日：1995-12-06

    Applicant: FRAMATOME SA ,  COGEMA

    Inventor： HERTZ DOMINIQUE ,  PILLET LUC

    IPC: G21C7/103 ,  G21C7/24

    Abstract: Grappe de contrôle pour réacteur nucléaire comprenant une araignée à laqeulle sont suspendus des crayons contenant un matériau à absorption des neutrons, dans certains au moins des crayons, le matériau est constitué, à leur partie inférieure, d'une colonne d'un alliage Ag-Sn-Cd et, à la partie supérieure, d'une colonne de pastilles de carbure de bore B4C, caractérisé en ce que, sur une fraction médiane de la hauteur de matériau absorbant entre 35 et 45 %, ledit matériau absorbant, est constitué de ZrB2 enrichi isotopiquement en bore 10 ou de HfB2.

    37.
    发明专利
    未知

    公开(公告)号：FR2604188B1

    公开(公告)日：1992-11-27

    申请号：FR8613078

    申请日：1986-09-18

    Applicant: FRAMATOME SA ,  COGEMA

    Inventor： HERTZ DOMINIQUE ,  COUTURIER JEAN-MICHEL

    IPC: C23C8/38 ,  G21C3/07 ,  G21C21/00 ,  G21C7/10

    Abstract: A sheath for a nuclear reactor control rod consists of chromium nickel stainless steel. It is protected against friction wear by nitridation over a depth of from 15 to 50 mu m obtained by an electric discharge in a nitrogen containing atmosphere.

    38.
    发明专利
    未知

    公开(公告)号：DE3775740D1

    公开(公告)日：1992-02-13

    申请号：DE3775740

    申请日：1987-11-30

    Applicant: FRAMATOME SA ,  COGEMA

    Inventor： HERTZ DOMINIQUE

    IPC: G21C3/07 ,  G21C3/06

    Abstract: For improving the corrosion resistance of the sheaths of fuel rods used in water cooled and moderated reactors, part at least of the outer surface of the sheath is coated with a dense and adhering carbon layer having a thickness of from 0.1 mu to 5 mu . The layer may be deposited by radiofrequency reactive sputtering in a lower alkyl containing atmosphere.

    39.
    发明专利
    未知

    公开(公告)号：FR2607616B1

    公开(公告)日：1990-05-18

    申请号：FR8616735

    申请日：1986-12-01

    Applicant: FRAMATOME SA ,  COGEMA

    Inventor： HERTZ DOMINIQUE

    IPC: G21C3/07 ,  G21C3/06 ,  G21C21/02

    Abstract: For improving the corrosion resistance of the sheaths of fuel rods used in water cooled and moderated reactors, part at least of the outer surface of the sheath is coated with a dense and adhering carbon layer having a thickness of from 0.1 mu to 5 mu . The layer may be deposited by radiofrequency reactive sputtering in a lower alkyl containing atmosphere.

Patent Agency Ranking