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Wide-temperature high-power MnZn ferrite material and preparation method thereof
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A ferrite material, high-power technology, applied in the direction of inorganic material magnetism, inductance/transformer/magnet manufacturing, circuits, etc., to achieve small changes in magnetic permeability, good economic and social benefits, and broad market prospects
Active Publication Date: 2020-12-25
CHANGSHU HAOBO ELECTRONICS TECH CO LTD
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[0003] The technical problem mainly solved by the present invention is to provide a kind of wide-temperature high-power MnZn ferrite material and its preparation method, which can solve the above-mentioned deficiencies existing in existing ferrite materials
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Embodiment 1
[0020] The invention discloses a wide temperature and high power MnZn ferrite material, comprising: a main component and an auxiliary additive component, wherein the main component includes 62.4mol% Fe 2 o 3 , 13.6mol% of ZnO and 24.0mol% of MnO; among them, Fe 2 o 3 Purity ≥ 99.5%, and its specific surface area is greater than or equal to 4.05m 2 / g; MnO to Mn 3 o 4 As the raw material, the molar percentage of Mn is ≥71.1%, and the specific surface area is 11-15m 2 / g; ZnO purity ≥ 99.7%.
[0021] The auxiliary added components are based on the weight percentage of the main component, including: Co 2 o 3 0.2wt%, CaCO 3 0.08wt%, Nb 2 o 5 0.025wt%, TiO 2 0.01wt% and NiO 0.015wt%.
[0022] The preparation method of above-mentioned a kind of wide-temperature high-power MnZn ferrite material comprises the following steps:
[0023] (1) Treatment of main components: Weigh Fe according to formula quantity 2 o 3 , ZnO and Mn 3 o 4 , and put it into a vibrating mil...
Embodiment 2
[0031] The difference with Example 1 is that the main component includes 62.5mol% Fe 2 o 3 , 13.3mol% of ZnO and 24.2mol% of MnO; the auxiliary added components are based on the weight percentage of the main component, including: Co 2 o 3 0.22wt%, CaCO 3 0.08wt%, Nb 2 o 5 0.025wt%, TiO 2 0.015wt%, NiO 0.015wt%. The wide-temperature high-power MnZn ferrite material, that is, the toroidal magnetic ring, is fired. The properties of the ferrite material are shown in Table 1.
[0032] Table 1 Material properties of the ring magnetic core of the present invention
[0033]
[0034] The material Bs in Table 1 is greatly improved compared with the conventional high-power material PC40, so that the material of the present invention can carry a larger operating current and is less likely to be saturated in the actual operating temperature range of 25-100 °C.
[0035] Adopting the prescription of above-mentioned embodiment 1 and preparation method thereof to make the specifica...
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Abstract
The invention discloses a wide-temperature high-power MnZn ferrite material and a preparation method thereof. The wide-temperature high-power MnZn ferrite material comprises a main component and an auxiliary additive component. The main component comprises 61-65 mol% of Fe2O3, 12.5-14.5 mol% of ZnO and the balance MnO, and the total amount of the main component is 100%; The auxiliary additive component comprises Co2O3, CaCO3, Nb2O5, TiO2 and NiO based on the percentage by weight relative to the main component. By adopting a unique iron-rich formula design, the prepared wide-temperature high-power MnZn ferrite material is high in normal-temperature and high-temperature Bs values and small in initial permeability change amplitude at the temperature from -40 DEG C to 120 DEG C, and meets theuse requirements of extreme temperature environments such as polar region low temperature, equatorial tropical zone, alpine and plateau.
Description
technical field [0001] The invention relates to the field of magnetic materials, in particular to a wide temperature and high power MnZn ferrite material and a preparation method thereof. Background technique [0002] Advances in technology, electric vehicles, automatic warehouse handling equipment, solar power generation, CATV machine power supply, uninterruptible power supply unit UPS, communication equipment power supply and other transformers under high-power current conditions, as well as high-speed rail, air conditioners, fans, compressors, medical Reactor choke coils used in various electrical equipment such as equipment have higher and higher requirements on the anti-magnetic saturation ability of magnetic materials. At the same time, these electrical equipment are widely used in different temperature zones of the earth, requiring the equipment to start and work normally under the ambient temperature conditions of -40°C~+120°C. The existing magnetic materials have l...
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