Title:
CU-BE BASE AMORPHOUS ALLOY
Document Type and Number:
WIPO Patent Application WO/2002/086178
Kind Code:
A1
Abstract:
A Cu-Be base amorphous alloy which comprises 50 vol % or more of an amorphous phase having a composition represented by the formula: Cu¿100-a-b?Be¿a?(Zr¿1-x-y?Hf¿x?Ti¿y?)¿b?, wherein a and b represent an atomic %, 0$m(F)a$m(F)20, 20$m(F)b$m(F)40, x and y represent an atomic fraction, 0$m(F)x$m(F)1.0 and 0$m(F)y$m(F)0.8. The Cu-Be base amorphous alloy may optionally further comprise a small amount of one or more selected from among Fe, Cr, Mn, Ni, Co, Nb, Mo, W, Sn, Al, Ta and rare earth elements and/or a small amount of one or more selected from among Ag, Pd, Pt and Au. The Cu-Be base amorphous alloy has a wider supercooled liquid region and a greater number of reduced glass transition temperature (Tg/Tm), exhibits improved thermal stability against crystallization, has enhanced capability of forming an amorphous phase, and thus is excellent in mechanical properties as well as in formability.
Inventors:
INOUE AKIHISA (JP)
ZHANG TAU (JP)
ZHANG TAU (JP)
Application Number:
PCT/JP2001/010808
Publication Date:
October 31, 2002
Filing Date:
December 10, 2001
Export Citation:
Assignee:
JAPAN SCIENCE & TECH CORP (JP)
INOE AKIHISA (JP)
ZHANG TAU (JP)
INOE AKIHISA (JP)
ZHANG TAU (JP)
International Classes:
C22C45/00; (IPC1-7): C22C45/00
Foreign References:
| JPS59126739A | 1984-07-21 |
Other References:
See also references of EP 1380664A4
Attorney, Agent or Firm:
Nishi, Yoshiyuki (26-32 Nakahara 4-chom, Isogo-ku Yokohama-shi Kanagawa, JP)
Download PDF: