Global Patent Index - EP 0947595 A3

EP 0947595 A3 2002-09-11 - Process for preparing a welded workpiece, in particular a tube, from dispersion-hardened platinum material

Title (en)

Process for preparing a welded workpiece, in particular a tube, from dispersion-hardened platinum material

Title (de)

Verfahren zur Herstellung eines aus dispersionsverfestigtem Platinwerkstoff bestehenden, geschweissten Formkörpers, insbesondere eines Rohres

Title (fr)

Procédé de préparation d'un article soudé, en particulier un tube, en matériau à base de platine renforcé par dispersion

Publication

EP 0947595 A3 (DE)

Application

EP 99104851 A

Priority

DE 19813988 A

Abstract (en)

[origin: EP0947595A2] A welded hollow article of oxide dispersion strengthened platinum is produced by shaping and welding a base metal-containing platinum alloy prior to internal oxidation. Production of a welded hollow article, especially a tube, of platinum material dispersion strengthened by base metal oxide particles of yttrium, zirconium and/or cerium oxide comprises shaping and welding one or more base metal-containing platinum alloy parts to a preform body, thermally oxidizing to achieve 75 wt.% oxidation and then shaping the preform body. An Independent claim is also included for an article, especially a tube, produced by the above process. Preferred Features: The platinum-base metal alloy is a Pt-Rh, Pt-Ir or Pt-Au alloy doped with 0.1-0.2 wt.% Zr and 0.01-0.05 wt.% Y and/or 0.05-0.2 wt.% Ce.

IPC 1-7 (main, further and additional classification)

C22C 32/00

IPC 8 full level (invention and additional information)

B23K 9/23 (2006.01); B21C 37/08 (2006.01); B23K 28/00 (2006.01); B23K 31/00 (2006.01); B23P 11/00 (2006.01); C22C 1/10 (2006.01); C22C 5/04 (2006.01); C22C 32/00 (2006.01); C22F 1/00 (2006.01); C22F 1/14 (2006.01); B23K 103/08 (2006.01); B23K 103/16 (2006.01)

CPC (invention and additional information)

C22C 32/0021 (2013.01); B22F 2998/10 (2013.01); Y10T 428/12875 (2013.01)

Combination set (CPC)

B22F 2998/10 + C22C 1/1078 + B22F 3/16 + C22C 1/1094

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 0947595 A2 19991006; EP 0947595 A3 20020911; EP 0947595 B1 20050511; CZ 298305 B6 20070822; CZ 9901048 A3 20000412; DE 19813988 C1 19991028; DE 59912028 D1 20050616; JP 3302654 B2 20020715; JP H11335754 A 19991207; US 6129997 A 20001010

INPADOC legal status


2017-10-03 [REG DE R119] APPLICATION DEEMED WITHDRAWN, OR IP RIGHT LAPSED, DUE TO NON-PAYMENT OF RENEWAL FEE

- Document: DE 59912028

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