Global Patent Index - EP 1749896 A4

EP 1749896 A4 20090624 - METHOD OF ATOMIZING ALLOY CRYSTAL GRAIN BY HYDROGEN TREATMENT

Title (en)

METHOD OF ATOMIZING ALLOY CRYSTAL GRAIN BY HYDROGEN TREATMENT

Title (de)

VERFAHREN ZUM ZERSTÄUBEN VON LEGIERUNGSKRISTALLKÖRNERN DURCH WASSERSTOFFBEHANDLUNG

Title (fr)

PROCEDE D'ATOMISATION DE GRAIN DE CRISTAL D'ALLIAGE PAR TRAITEMENT D'HYDROGÉNE

Publication

EP 1749896 A4 20090624 (EN)

Application

EP 05721514 A 20050325

Priority

  • JP 2005005587 W 20050325
  • JP 2004113782 A 20040408

Abstract (en)

[origin: EP1749896A1] A technology for atomizing the crystal grains of alloy whose main constituents are elements exhibiting weak affinity with hydrogen. With respect to the alloy whose main constituents are elements exhibiting weak affinity with hydrogen in which an element exhibiting strong affinity with hydrogen is contained, resulting from attaining of presence of an element exhibiting strong affinity with hydrogen in an alloy whose main constituents are elements exhibiting weak affinity with hydrogen, any crystal grains of the alloy can be super-atomized by subjecting the alloy to heat treatment involving hydrogen absorption and release, thereby realizing super-high strength thereof. Thus, the properties of the alloy can be improved and enhanced.

IPC 8 full level

C22F 1/047 (2006.01); B22F 1/00 (2006.01); C22C 21/02 (2006.01); C22C 21/06 (2006.01); C22F 1/02 (2006.01)

CPC (source: EP US)

B22F 1/07 (2022.01 - EP US); C22C 21/02 (2013.01 - EP US); C22C 21/06 (2013.01 - EP US); B22F 2998/10 (2013.01 - EP US); B22F 2999/00 (2013.01 - EP US)

Citation (search report)

  • [X] JP H1180801 A 19990326 - SANYO ELECTRIC CO
  • [X] JP 2002118010 A 20020419 - TOSHIBA CORP
  • [X] JP 2003193208 A 20030709 - TOSHIBA CORP
  • [A] B. HJÖRVARSSON, G. ANDERSSON AND E. KARLSSON: "Metallic superlattices: quasi two-dimensional playground for hydrogen", JOURNAL OF ALLOYS AND COMPOUNDS, vol. 253-254, 20 May 1997 (1997-05-20), pages 51 - 57, XP002522576
  • [A] H. TAKAMURA, T. MIYASHITA1, A. KAMEGAWA AND M. OKADA: "Grain size refinement in Mg?Al-based alloy by hydrogen treatment", JOURNAL OF ALLOYS AND COMPOUNDS, vol. 356-357, 11 August 2003 (2003-08-11), pages 804 - 808, XP002522577
  • [A] TAKANORI MIYAZAWA ET AL: "Grain Size Refinements of Mg Alloys (AZ61, AZ91, ZK60) by HDDR Treatment", METALLURGICAL AND MATERIALS TRANSACTIONS A: PHYSICAL METALLURGY & MATERIALS SCIENCE, ASM INTERNATIONAL, MATERIALS PARK, OH, US, vol. 45, no. 2, 1 January 2004 (2004-01-01), pages 384 - 387, XP009114840, ISSN: 1073-5623
  • See references of WO 2005098071A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 1749896 A1 20070207; EP 1749896 A4 20090624; CN 1942600 A 20070404; JP WO2005098071 A1 20080228; US 2007006950 A1 20070111; WO 2005098071 A1 20051020

DOCDB simple family (application)

EP 05721514 A 20050325; CN 200580011961 A 20050325; JP 2005005587 W 20050325; JP 2006512039 A 20050325; US 53222206 A 20060915