| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a Cu-free, Zr-based metal glass alloy that has a large amorphous-forming ability and is excellent in mechanical properties, workability and corrosion resistance. <P>SOLUTION: The Cu-free, Zr-based metal glass alloy includes a composition represented by the formula: Zr<SB POS="POST">75-x-y-z</SB>Al<SB POS="POST">x</SB>Ni<SB POS="POST">y-a</SB>M<SB POS="POST">z</SB>B<SB POS="POST">a</SB>(wherein x and y satisfy the relations: 10≤x≤19 and 15≤y≤28, respectively; M is Nb or Ta; z satisfies the relation: 0<z≤8; B is Fe or Co; and a satisfies the relation: 0≤a≤8). The Cu-free, Zr-based metal glass alloy has a ΔTx of ≥50K, a ratio (Tg/T1) of >0.54 and a γ value of ≥0.38, is in a rod shape with a diameter of ≥2 mm and has compression fracture strength of ≥1,650 MPa. The Cu-free, Zr-based metal glass alloy is superior to conventional ternary to penternary Zr-based metal glass alloys in terms of resistance to corrosion against HCl and NaCl solutions. <P>COPYRIGHT: (C)2012,JPO&INPIT |
