Global Patent Index - EP 2402468 A1

EP 2402468 A1 20120104 - Titanium alloy excellent in intergranular corrosion resistance

Title (en)

Titanium alloy excellent in intergranular corrosion resistance

Title (de)

Titanlegierung mit herausragender interkristalliner Korrosionsbeständigkeit

Title (fr)

Alliage de titane excellent dans la résistance contre la corrosion intergranulaire

Publication

EP 2402468 A1 20120104 (EN)

Application

EP 11005263 A 20110628

Priority

JP 2010148100 A 20100629

Abstract (en)

A titanium alloy contains Ni in a content of 0.35% to 0.55%; Pd in a content of 0.01% to 0.02%; Ru in a content of 0.02% to 0.04%; and Cr in a content of 0.1% to 0.2%, with the remainder including titanium and inevitable impurities, in which the titanium alloy includes nickel-rich phases, each nickel-rich phase being a phase (other than titanium alpha phase) locally containing Ni in a content of 10 times or more the average Ni content of the titanium alloy, the nickel-rich phases are aligned along a rolling direction to form a row, and a multiplicity of the rows are aligned substantially in parallel in a cross direction. The titanium alloy minimizes the proceeding of intergranular corrosion even in specific environments where the intergranular corrosion may easily proceed.

IPC 8 full level

C22C 14/00 (2006.01); C22F 1/18 (2006.01)

CPC (source: EP KR US)

C22C 14/00 (2013.01 - EP KR US); C22F 1/183 (2013.01 - EP US); F28F 21/086 (2013.01 - EP US)

Citation (applicant)

Citation (search report)

  • [X] SCHUTZ ET AL: "COMPARATIVE CORROSION RESISTANCE OF Ru- AND Pd-MODIFIED C.P. TITANIUM ALLOYS", 1 September 2001 (2001-09-01), pages 245 - 253, XP055006432, Retrieved from the Internet <URL:http://www.twca.com/pdf/2k1ConfProc/2001025.pdf> [retrieved on 20110907]
  • [A] P.A. BLENKINSOP, W.J. EVANS AND H.M. FLOWER: "Titanium '95 Science and Technology - proccedings of the 8th world conference on titanium", vol. 2, 22 October 1995, INSTITUTE OF MATERIALS, UK, article YASHIKI ET AL: "Corosion Resistance and Mechanical Properties of Ti-Ni-Pd-Ru-Cr Alloy", pages: 1871 - 1878, XP002658370

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

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 2402468 A1 20120104; CN 102312126 A 20120111; JP 2012012636 A 20120119; JP 5379752 B2 20131225; KR 20120001660 A 20120104; RU 2464334 C1 20121020; US 2011315278 A1 20111229

DOCDB simple family (application)

EP 11005263 A 20110628; CN 201110157850 A 20110602; JP 2010148100 A 20100629; KR 20110062868 A 20110628; RU 2011126549 A 20110628; US 201113159951 A 20110614