Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of fe-b-p-c-cu-n-cr system amorphous nanocrystalline soft magnetic alloy and its preparation method

A fe-b-p-c-cu-n-cr, amorphous and nanocrystalline technology, applied in the direction of inductance/transformer/magnet manufacturing, magnetic objects, magnetic materials, etc., can solve the problems of high melting point, easy overflow of N elements, etc., to improve The effects of saturation magnetization, increased content, and mature technology

Active Publication Date: 2021-07-09
UNIV OF SCI & TECH BEIJING
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these nitrides have high melting points, such as the melting point of NCr is 1650 ° C, and the N element is easy to overflow during the melting process.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of fe-b-p-c-cu-n-cr system amorphous nanocrystalline soft magnetic alloy and its preparation method
  • A kind of fe-b-p-c-cu-n-cr system amorphous nanocrystalline soft magnetic alloy and its preparation method
  • A kind of fe-b-p-c-cu-n-cr system amorphous nanocrystalline soft magnetic alloy and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Prepared with Fe 27.9 Cr 46.8 N 25.3 Iron-based amorphous alloy strips as additives, the chemical formula is (Fe 82.8 B 8.9 P 3 C 4 Cu 1 N 0.1 Cr 0.2 ).

[0035] (1) Preparation of master alloy raw materials: FeP alloy with a purity of 99.98wt%, B with a purity of 99.95wt%, and an industrial FeP alloy with a P content of 27.1wt% (the impurity content is lower than 1.6wt%) with a purity of 99.95wt% Cu, 99.95wt% C and 98.27wt% Fe 27.9 Cr 46.8 N 25.3 master alloy.

[0036] (2) Master alloy smelting: Put the raw materials prepared in (1) above into the copper crucible of the non-consumable vacuum electric arc furnace, and when placed, the composition will be Fe 27.9 Cr 46.8 N 25.3 The ferrochromium nitride and pure boron B and FeP alloys that are easy to splash or volatilize are placed at the bottom of the copper crucible, and then the blocky Fe is laid on top of it. Close the furnace door and evacuate to 5×10 with mechanical pump and molecular pump -3 Pa b...

Embodiment 2

[0043] Prepared with Fe 27.9 Cr 46.8 N 25.3 Iron-based amorphous alloy strip as an additive, the chemical formula is Fe 82.4 B 8.5 P 3 C 4 Cu 1 N 0.4 Cr 0.7 .

[0044] (1) Preparation of master alloy raw materials: FeP alloy with a purity of 99.98wt%, B with a purity of 99.95wt%, and an industrial FeP alloy with a P content of 27.1wt% (the impurity content is lower than 1.6wt%) with a purity of 99.95wt% Cu, 99.95wt% C and 98.27wt% Fe 27.9 Cr 46.8 N 25.3 master alloy.

[0045] (2) Master alloy smelting: Put the raw materials prepared in (1) above into the copper crucible of the non-consumable vacuum electric arc furnace, and when placed, the composition will be Fe 27.9 Cr 46.8 N 25.3 The chromium-iron nitride master alloy and pure boron B and FeP alloys that are easy to splash or volatilize are placed at the bottom of the copper crucible, and then the blocky Fe is laid on top of it. Close the furnace door and evacuate to 5×10 with mechanical pump and molecular p...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to View More

Abstract

A Fe-B-P-C-Cu-N-Cr system amorphous nanocrystalline soft magnetic alloy and a preparation method thereof. The chemical composition expression is Fe x B y P z C a Cu b N c Cr d , where x, y, x, a, b, c, d represent the atomic percentages of the corresponding components Fe, B, P, C, Cu, N, Cr respectively, where 80≤x≤85, 4≤y≤ 9, 3≤z≤8, 3≤a≤5, 0.7≤b≤1.1, 0.1≤c≤0.5, the range of d is determined according to the composition of the ferrochromium nitride (FeCrN) additive, and the atomic percentage content of the FeCrN additive is Fe 27.9 Cr 46.8 N 25.3 . In the alloy system of the present invention, FeCrN with a low melting point is added. When N=0.4, the alloy is annealed at the optimal temperature for 6 minutes, and the saturation magnetization (B s ) up to 1.86T, coercive force (H c ) can be as low as 9.2A / m, and the corrosion potential of its amorphous state in 0.5mol / LNaCl solution is relatively lower than that of the comparative example (Fe 83 B 9 P 3 C 4 Cu 1 ) alloy increased by 0.1V. The prepared amorphous nanocrystalline alloy can be used as motors, transformers and other devices and is suitable for power industry transformer cores, inverter welding machines, new energy, wireless charging, digital and automation and other fields.

Description

technical field [0001] The invention belongs to the technical field of soft magnetic alloy functional materials, and relates to a chromium-nitrogen-containing iron-based amorphous nanocrystalline soft magnetic alloy with corrosion resistance and high saturation magnetization and a preparation method thereof, in particular to a corrosion resistance and high saturation magnetization The Fe-B-P-C-Cu-N-Cr system amorphous nanocrystalline soft magnetic alloy and a preparation method thereof. Background technique [0002] Under the background of the miniaturization, light weight and multi-kinetic development of electrical components, higher requirements are put forward for the soft magnetic functional materials used in them. Although the currently used Finemet (its composition is Fe 73.5 Si 13.5 B 9 Cu 1 Nb 3 , at.%) nanocrystalline soft magnetic alloy has high initial and effective permeability, low coercive force and loss, but its relatively low saturation magnetic inductio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/153H01F41/02C22C38/20C22C38/32C22C33/06
CPCC22C33/06C22C38/001C22C38/002C22C38/20C22C38/32H01F1/153H01F41/02
Inventor 惠希东李育洛窦正旭吕旷陈莉沈宁宁
Owner UNIV OF SCI & TECH BEIJING