Iron-nickel based high permeability amorphous alloy

• US 5,338,376 A
• Filed: 06/03/1993
• Issued: 08/16/1994
• Est. Priority Date: 06/05/1992
• Status: Expired due to Fees

• Current Assignee: Central Iron and Steel Research Institute
• Original Assignee: Central Iron and Steel Research Institute
• Inventors: Li, Jingbei, Liu, Goudong, Ma, Hongliang, Li, Xuecai, Zhang, Chuanli, Xu, Shizhen, Ding, Lidong
• Primary Examiner(s): Sheehan, John P.
• Application Number:
  US08/070,525
• Time in Patent Office: 439 Days
• Field of Search: 148/304, 148/403, 148/310, 148/442, 420/97, 420/98, 420/112, 420/117, 420/121, 420/584
• US Class Current: 148/304
• CPC Class Codes: C22C 45/02 with iron as the major constituent
• CPC Class Codes: H01F 1/15308 based on Fe/Ni H01F1/15325 takes precedence

Abstract

This invention relates to a Fe-Ni based high permeability amorphous alloy consisting of, in atom percent Ni 30-45%, Cr 0.5-1.2%, Si 5-14%, B 5-15%, P 1.0-3.0%, the balance Fe and inevitable impurities. The alloy is made by the rapid quenching melt method. It can be heat-treated in air and the excellent magnetic properties can be obtained as follows: B₁₀ 7900 Gs, B_r 7500 Gs, H_C 0.008 Oe, u_m 68×10⁴. The present alloy is applied to make various magnetic devices which are used in electric apparatus and equipments.

Claims

1. An Fe-Ni based high permeability amorphous alloy consisting of, in atomic percent, Ni 30-45%, Cr 0.5-1.2%, Si 5-14%, B 5-15%, P 1.0-3.0%, the balance Fe and inevitable impurities.

2. The alloy as claimed in claim 1, wherein said alloy consists of Ni 34-45%, Cr 0.5-1.0%, Si 12-14%, B 8-10%, P 1.0-2.0%, the balance Fe and inevitable impurities.

3. The alloy as claimed in claim 1, wherein said alloy consists of Ni 37.00%, Cr 0.5%, Si 13.0%, B 8.0%, P 1.0%, the balance Fe and inevitable impurities.

4. The alloy as claimed in claim 1, wherein said alloy consists of Ni 34.75%, Cr 1.0%, Si 12.5%, B 8.0%, P 1.5%, the balance Fe and inevitable impurities.

5. The alloy as claimed in claim 1, wherein said alloy consists of Ni 40.00%, Cr 1.2%, Si 12.0%, B 8.0%, P 2.0%, the balance Fe and inevitable impurities.

6. The alloy as claimed in claim 1, wherein said alloy consists of Ni 45.00%, Cr 0.5%, Si 14.0%, B 8.0%, P 2.5%, the balance Fe and inevitable impurities.

7. The alloy as claimed in claim 1, wherein said alloy consists of Ni 30.00%, Cr 0.5%, Si 14.0%, B 8.0%, P 2.0%, the balance Fe and inevitable impurities.