High-temperature-resistant soldering tin, nickel and zinc soft magnetic ferrite material
A technology of soft ferrite and high temperature resistance, applied in the field of soft ferrite material and its preparation, can solve problems such as affecting the characteristics and quality of the whole machine, decreasing the flexural strength, and deteriorating the performance of inductance products.
Active Publication Date: 2013-03-27
GUANGDONG FENGHUA ADVANCED TECH HLDG +2
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Problems solved by technology
After satisfying the miniaturization of SMD chip inductors and the high Bs of materials, customers pay more attention to the process adaptability and scope of the magnetic core during use, such as the appearance of the product, solder resistance, and size consistency. Among them, the resistance Solderability has a fatal impact on the product. If the product has poor solderability, it will expand and crack after being subjected to thermal shock during the soldering process, which will cause deterioration of the performance of the inductor product, a decrease in the flexural strength, etc., and ultimately affect the overall performance of the machine. Features and Quality
Method used
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Experimental program
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Effect test
Embodiment
[0016] The preparation process of the above-mentioned nickel-zinc soft magnetic ferrite material, the steps are: raw material processing, batching, primary ball milling, drying, powdering or sieving, pre-calcination (910±10°C, heat preservation for 2±0.4 hours), secondary batching, two Secondary ball milling, sand milling, secondary drying, glue addition, spray granulation, molding, DR cutting, sintering, sorting, packaging, the pre-combustion is pre-combustion in a rotary kiln; sand milling is added after the secondary ball milling Procedure; the sintering time is 3±0.5 hours, and the sintering temperature is 1090±20° C. In the above steps, the primary ingredients are added to the No. 1 to No. 16 material formulas described in Table 1, and the performance test parameters of the finally obtained nickel-zinc soft magnetic ferrite materials are shown in Table 2 corresponding to No. 1 to No. 16 material formulas. .
[0017] Table 1: Formula of Ni-Zn soft ferrite material
[001...
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Abstract
The invention discloses a nickel and zinc soft magnetic ferrite material and a preparation method thereof. A high-temperature-resistant soldering tin, nickel and zinc soft magnetic ferrite material comprises the following components in parts: 45-50mol percent of Fe2O3, 26-32 mol percent of ZnO, 17-21 mol percent of NiO and 4-8 mol percent of CuO, and also comprises the following components in parts: 0.2-0.5 wt percent of auxiliary material A and 0.1-0.2 wt percent of auxiliary material B, wherein the auxiliary material A is one or two of Bi2O3, SiO2 and Ta2O5, and the auxiliary material B is one or more of TiO2, ViO5 and Nb2O5. The high-temperature-resistant soldering tin, nickel and zinc soft magnetic ferrite material has the characteristics of high frequency, high magnetic conductivity,high Bs and TC (Temperature Curie).
Description
technical field [0001] The invention relates to a soft ferrite material and a preparation method thereof, in particular to a nickel-zinc soft ferrite material and a preparation method thereof. Background technique [0002] With the continuous development and improvement of the SMD chip inductor market, and with the continuous improvement of customer requirements, the requirements for SMD nickel-zinc soft ferrite cores are also getting higher and higher. After satisfying the miniaturization of SMD chip inductors and the high Bs of materials, customers pay more attention to the process adaptability and scope of the magnetic core during use, such as the appearance of the product, solder resistance, and size consistency. Among them, the resistance Solderability has a fatal impact on the product. If the product has poor solderability, it will expand and crack after being subjected to thermal shock during the soldering process, which will cause deterioration of the performance of ...
Claims
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IPC IPC(8): C04B35/26C04B35/622
Inventor 王京平李际勇韦建军曾卫红王国华胡满明龚锋王灿飞梁均林黄燕军黄文军
Owner GUANGDONG FENGHUA ADVANCED TECH HLDG