Global Patent Index - EP 2721188 A4

EP 2721188 A4 20150429 - ZIRCONIUM ALLOYS WITH IMPROVED CORROSION/CREEP RESISTANCE DUE TO FINAL HEAT TREATMENTS

Title (en)

ZIRCONIUM ALLOYS WITH IMPROVED CORROSION/CREEP RESISTANCE DUE TO FINAL HEAT TREATMENTS

Title (de)

ZIRKONIUMLEGIERUNGEN MIT VERBESSERTER KORROSIONS-/KRIECHBESTÄNDIGKEIT AUFGRUND ABSCHLIESSENDER WÄRMEBEHANDLUNG

Title (fr)

ALLIAGES DE ZIRCONIUM PRÉSENTANT UNE MEILLEURE RÉSISTANCE À LA CORROSION/AU FLUAGE GRÂCE À DES TRAITEMENTS THERMIQUES FINAUX

Publication

EP 2721188 A4 20150429 (EN)

Application

EP 12800643 A 20120518

Priority

  • US 201113161563 A 20110616
  • US 2012038471 W 20120518

Abstract (en)

[origin: WO2012173738A1] Articles, such as tubing or strips, which have excellent corrosion resistance to water or steam at elevated temperatures, are produced from alloys having 0.2 to 1.5 weight percent niobium, 0.01 to 0.6 weight percent iron, and optionally additional alloy elements selected from the group consisting of tin, chromium, copper, vanadium, and nickel with the balance at least 97 weight percent zirconium, including impurities, where a necessary final heat treatment includes one of i) a SRA or PRXA (15-20% RXA) final heat treatment, or ii) a PRXA (80-95% RXA) or RXA final heat treatment.

IPC 8 full level

C22C 16/00 (2006.01); C22F 1/18 (2006.01)

CPC (source: EP)

C22C 16/00 (2013.01); C22F 1/18 (2013.01); C22F 1/186 (2013.01); G21C 3/07 (2013.01); Y02E 30/30 (2013.01)

Citation (search report)

  • [X] US 2010128834 A1 20100527 - COLBURN DAVID [US], et al
  • [A] EP 0425465 A1 19910502 - SANDVIK AB [SE]
  • [A] US 2011002433 A1 20110106 - HALLSTADIUS LARS [SE], et al
  • [A] WO 2004040587 A1 20040513 - WESTINGHOUSE ELECTRIC SWEDEN [SE], et al
  • [A] EP 1225243 A1 20020724 - KOREA ATOMIC ENERGY RES [KR], et al
  • [A] JP S63145735 A 19880617 - SUMITOMO METAL IND
  • [XA] JUNG Y I ET AL: "Behavior of a recrystallization in HANA-4 and HANA-6 zirconium-based alloys", JOURNAL OF ALLOYS AND COMPOUNDS, ELSEVIER SEQUOIA, LAUSANNE, CH, vol. 479, no. 1-2, 24 June 2009 (2009-06-24), pages 423 - 426, XP026108849, ISSN: 0925-8388, [retrieved on 20081230], DOI: 10.1016/J.JALLCOM.2008.12.089
  • [A] JUNG Y I ET AL: "Effect of Cr on the creep properties of zirconium alloys", JOURNAL OF NUCLEAR MATERIALS, ELSEVIER BV, NL, vol. 396, no. 2-3, 31 January 2010 (2010-01-31), pages 303 - 306, XP026832981, ISSN: 0022-3115, [retrieved on 20091029]
  • [A] PARK J Y ET AL: "Corrosion behavior of Zr alloys with a high Nb content", JOURNAL OF NUCLEAR MATERIALS, ELSEVIER BV, NL, vol. 340, no. 2-3, 15 April 2005 (2005-04-15), pages 237 - 246, XP027708434, ISSN: 0022-3115, [retrieved on 20050415]
  • [A] SHISHOV V N ET AL: "Structure-phase state, corrosion and irradiation properties of Zr-Nb-Fe-Sn system alloys", ASTM INTERNATIONAL. JOURNAL, ASTM INTERNATIONAL, US, vol. 5, no. 3, 1 March 2008 (2008-03-01), pages - 18, XP009183355, ISSN: 1546-962X, DOI: 10.1520/JAI101127
  • [A] SEIBOLD A ET AL: "Influence of composition and condition on In-PWR behavior of Zr-Sn-Nb-FeCrV alloys", ASTM SPECIAL TECHNICAL PUBLICATION, PHILADELPHIA, PA, US, no. 1423, 1 January 2002 (2002-01-01), pages 743 - 757, XP009183356, ISSN: 0066-0558
  • See references of WO 2012173738A1

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

WO 2012173738 A1 20121220; CN 103608475 A 20140226; CN 108950306 A 20181207; EP 2721188 A1 20140423; EP 2721188 A4 20150429; EP 3064605 A1 20160907; EP 3064605 B1 20210331; ES 2886336 T3 20211217; JP 2014518330 A 20140728; JP 5982474 B2 20160831; KR 101929608 B1 20181214; KR 20140058492 A 20140514; TW 201303034 A 20130116; TW I545201 B 20160811

DOCDB simple family (application)

US 2012038471 W 20120518; CN 201280029053 A 20120518; CN 201810867175 A 20120518; EP 12800643 A 20120518; EP 16000804 A 20120518; ES 16000804 T 20120518; JP 2014515830 A 20120518; KR 20147000611 A 20120518; TW 101121397 A 20120614