Material having a high magnetic permeability

• US 4,007,066 A
• Filed: 03/12/1975
• Issued: 02/08/1977
• Est. Priority Date: 03/13/1972
• Status: Expired due to Term

• Current Assignee: Nippon Yusen Kabushiki Kaisha
• Original Assignee: Nippon Yusen Kabushiki Kaisha
• Inventors: Iijima, Kenzaburo, Yamagishi, Tomoo
• Primary Examiner(s): Satterfield, Walter R.
• Application Number:
  US05/557,837
• Time in Patent Office: 699 Days
• Field of Search: 148/31.55, 148/120, 148/121, 75/170, 75/171
• US Class Current: 148/312
• CPC Class Codes: C22C 19/00 Alloys based on nickel or cobalt
• CPC Class Codes: C22C 19/057 with the maximum Cr content being less 10%
• CPC Class Codes: H01F 1/147 Alloys characterised by their composition treatment thereof for enhancing their electromagnetic properties C21D8/12
• CPC Class Codes: H01F 1/14708 Fe-Ni based alloys pure Fe or Ni H01F1/14, H01F1/16 or H01F1/20

Abstract

A material having a high magnetic permeability made by a basic composition consisting of 75-82 weight percent of nickel, 2-6 weight percent of molybdenum, 1 or less weight percent of manganese, 1 or less weight percent of silicon and the remainder iron, and by an additive consisting of at least two different types of elements, one of which types of elements being an element selected from a first group of elements consisting of zirconium, vanadium, tantalum, chromium and tungsten, and the other being at least one element selected from a second group of elements consisting of titanium, zirconium, vanadium, niobium, tantalum, chromium and tungsten but different from said an element of the first group, said additive being contained in said material in an amount within the range of 1-8 weight percent. This material exhibits a high mechanical strength, and a high resistance to wear due to friction and a high magnetic permeability.

Claims

1. A worked and heat treated magnetic alloy having a high magnetic permeability, consisting of:

a base composition consisting of 75-82 weight percent of nickel, 2-6 weight percent of molybdenum, 1 or less weight percent of manganese, 1 or less weight percent of silicon and 7.8-18 weight percent iron; and

an additive consisting of at least three different elements, one of said elements being an element selected from a first group of elements including zirconium, vanadium, tantalum, chromium or tungsten;

a second element selected from a second group and being titanium, zirconium, vanadium, niobium, tantalum, chromium or tungsten and a third element said element of the second group being different from said element of the first group, said third element being different from said elements of said first group and of said second group;

said additive being contained in said alloy in a total amount within the range of 1-8 weight percent, wherein said alloy is characterized by a Hv of at least 160 and a μ

of at least 10,000.

2. The alloy of claim 1, wherein said additive consists of 2% chromium, 2% vanadium, and 1.5% titanium.

3. The alloy of claim 1, wherein said additive consists of 2% chromium, 2% vanadium and 2% titanium.

4. The alloy of claim 1, wherein said additive consists of 2% by weight chromium, 1% by weight vanadium, and 3% by weight titanium.

5. The alloy of claim 1, wherein said additive consists of 2% by weight vanadium, 2% by weight niobium, 2% by weight titanium.

6. The alloy of claim 1, wherein said additive consists of 2% by weight vanadium, 3% by weight niobium, and 2% by weight titanium.

7. The alloy of claim 1, wherein said additive consists of 2% by weight chromium, 1% by weight zirconium, and 2% by weight titanium.

8. The alloy of claim 1, wherein said additive consists of 1.5% by weight chromium, 2% by weight zirconium, and 3% by weight titanium.

9. The alloy of claim 1, wherein the additive consists of three elements, the combination of said three elements being present in amounts ranging between 2-8%, said elements being chromium, vanadium, and titanium.

10. The alloy of claim 1, wherein said additive consists of three elements, present in amounts ranging between 2-8% by weight of the composition of said material, said elements being vanadium, niobium and titanium.

11. The alloy of claim 1, wherein said additive consists of three elements, present in amounts ranging between 2-8%, said elements being chromium, zirconium and titanium.