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

Manganese-zinc ferrite with high saturation magnetic induction intensity and wide temperature and low core loss, its preparation method and application of potassium tetrafluoroaluminate

A technology of magnetic induction and manganese-zinc ferrite, which is applied in the manufacture of inductors/transformers/magnets, magnetic objects, magnetic materials, etc., can solve the problems of large power loss and the inability to realize the application of manganese-zinc ferrite

Active Publication Date: 2022-08-02
CHONGQING SHANGJIA ELECTRONICS +1
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The magnetic induction (Bs) of MnZn ferrite in the prior art can also reach about 600mT (1000A / m, 100°C at 50Hz), but there is a huge power loss (≥1200mW / cm 3 ) defects, so that these manganese zinc ferrites cannot be applied in industry

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A high saturation magnetic induction intensity and wide temperature and low core loss manganese-zinc ferrite, made of Fe 2 O 3 : 60.5mol; Mn 3 O 4 : 22.5mol; ZnO: 20.5mol and doping components.

[0026] The percentage of each doping component and their added amount to the sum of the weight of all main raw materials are: CaCO 3 0.01wt%, TiO 2 0.01%, NiO 0.01wt%, Nb 2 O 5 0.10wt%, Li 2 CO 3 0.08wt%, Bi 2 O 3 0.01wt%, Co 2 O 3 0.01wt%, KAlF 4 1 wt%.

[0027] Lubricant zinc stearate 0.5wt% and adhesive polyvinyl alcohol solution 8wt%.

[0028]Prepare as follows:

[0029] (1) One-time sanding: weighing the required Fe 2 O 3 , Mn 3 O 4 , ZnO, Fe 2 O 3 , Mn 3 O 4 , The particle size of ZnO powder is 0.84~1.36μm, put it into the sand mill and stir well, add distilled water, carry out wet sand grinding and then dry, and the sand grinding time is 120min.

[0030] (2) Pre-sintering: pre-sintering the powder after one time of sanding at 750°C to 950°C for 1 ...

Embodiment 2

[0035] A manganese-zinc ferrite with high saturation magnetic induction and wide temperature and low core loss, made of Fe 2 O 3 : 70.5mol; Mn 3 O 4 : 15.5mol; ZnO: 10.5mol and doping components.

[0036] The percentage of each doping component and their added amount to the sum of the weight of all main raw materials are: CaCO 3 0.09wt%, TiO 2 0.09%, NiO 0.09wt%, Nb 2 O 5 0.03wt%, Li 2 CO 3 0.01wt%, Bi 2 O 3 0.06wt%, Co 2 O 3 0.07wt%, KAlF 4 5wt%.

[0037] Lubricant zinc stearate 0.1wt% and adhesive polyvinyl alcohol solution 12wt%.

[0038] Prepare as follows:

[0039] (1) One-time sanding: weighing the required Fe 2 O 3 , Mn 3 O 4 , ZnO, Fe 2 O 3 , Mn 3 O 4 , The particle size of ZnO powder is 0.84~1.36μm, put it into the sand mill and stir well, add distilled water, carry out wet sand grinding and then dry, and the sand grinding time is 50min.

[0040] (2) Pre-sintering: pre-sintering the powder after one time of sanding at 750°C to 950° C. for 6 hou...

Embodiment 3

[0045] A manganese-zinc ferrite with high saturation magnetic induction and wide temperature and low core loss, made of Fe 2 O 3 : 65.5mol; Mn 3 O 4 : 15mol; ZnO: 15mol and doping components.

[0046] The percentage of each doping component and their added amount to the sum of the weight of all main raw materials are: CaCO 3 0.05wt%, TiO 2 0.04%, NiO 0.04wt%, Nb 2 O 5 0.06wt%, Li 2 CO 3 0.05wt%, Bi 2 O 3 0.02wt%, Co 2 O 3 0.03wt%, KAlF 4 3wt%.

[0047] Lubricant zinc stearate 0.2wt% and adhesive polyvinyl alcohol solution 10wt%.

[0048] Prepare as follows:

[0049] (1) One-time sanding: weighing the required Fe 2 O 3 , Mn 3 O 4 , ZnO, Fe 2 O 3 , Mn 3 O 4 , The particle size of ZnO powder is 0.84~1.36μm, put it into the sand mill and stir well, add distilled water, carry out wet sand grinding and then dry, and the sand grinding time is 80min.

[0050] (2) Pre-sintering: pre-sintering the powder after one time of sanding at 750° C. to 950° C. for 4 hours...

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
particle diameteraaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a manganese-zinc ferrite with high saturation magnetic induction intensity, wide temperature and low magnetic core loss, a preparation method thereof, and application of potassium tetrafluoroaluminate. 2 O 3 : 60.5~70.5mol parts; Mn 3 O 4 : 15.5-22.5 mol parts; ZnO: 10.5-20.5 mol parts, also including doping components, the percentages of each doping component and their addition amount to the sum of the weight of all main raw materials are: CaCO 3 0.01~0.09wt%, TiO 2 0.01-0.09%, NiO 0.01-0.09wt%, Nb 2 O 5 0.03~0.10wt%, Li 2 CO 3 0.01~0.08wt%, Bi 2 O 3 0.01~0.06wt%, Co 2 O 3 0.01~0.07wt%, KAlF 4 1 to 5wt%. Improve the compactness of manganese-zinc ferrite during sintering and increase the Bs of the material; increase the Curie temperature of manganese-zinc ferrite through doping modification, and reduce the Pcv of manganese-zinc ferrite.

Description

technical field [0001] The invention relates to a manganese-zinc ferrite with high saturation magnetic induction intensity, wide temperature and low magnetic core loss, a preparation method and application of potassium tetrafluoroaluminate, and belongs to the field of soft ferrite materials. Background technique [0002] Manganese-zinc ferrite, as the most widely used soft ferrite material in the middle and low frequency bands, is made of aMnFe with a spinel structure. 2 O 4 ·bZnFe 2 O 4 Cubic system with a small amount of Fe 3 O 4 A single-phase solid solution composed of mixed crystals. The crystal structure of manganese-zinc ferrite is very symmetrical, and has many excellent magnetic properties and power loss, such as low coercivity, small magnetocrystalline anisotropy constant, high initial permeability, high saturation magnetic induction, and high cut-off frequency. Since its research and development, it has become a very important part in the fields of computer,...

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): C04B35/38C04B35/622C04B35/64H01F1/34H01F41/02
CPCC04B35/2616C04B35/2633C04B35/265C04B35/622C04B35/64H01F1/344H01F41/02C04B2235/445C04B2235/3263C04B2235/3284C04B2235/3208C04B2235/3232C04B2235/3251C04B2235/3279C04B2235/3203C04B2235/3298C04B2235/3275C04B2235/5445C04B2235/5436C04B2235/6583C04B2235/656C04B2235/6567C04B2235/763
Inventor 符靓黎树春谢华林廖新仁马俊才赵飞张伟鹏
Owner CHONGQING SHANGJIA ELECTRONICS