Low-Temperature Sintering and Electromagnetic Properties Evaluation of (Ni/Mn)CuZn Ferrite

Abstract:

Low temperature sintering (Ni/Mn)CuZn ferrite was employed at most cases due to its co-firability with Ag (below 960 °C).The purpose of this study is to fabricate (Ni/Mn)CuZn ferrite sintered body with high-strength and high-frequency magnetic properties. Following is the procedure: firstly, (Ni/Mn)CuZn ferrite powder was synthesized under CO2 atmosphere at 500 °C from the mixed doxalate synthesized by co-precipitation method; then a small amount of boric acid [H3BO3] was added to the powder, and the (Ni/Mn)CuZn ferrite powder compact was prepared with Newton press and CIP methods; finally, (Ni/Mn)CuZn ferrite sintered body was fabricated by sintering at 900 °C under CO2 atmosphere. By this method, NiCuZn and MnCuZn ferrite sintered bodies with 0.5 mass% boric acid were obtained, the strength are 430 and 530 MPa respectively. The effect of various Mn addition on NiCuZn electromagnetic properties were studied.

• Periodical: Materials Science Forum (Volumes 534-536)
• Pages: 557-560
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.534-536.557
• Online since: January 2007
• Authors: Dong Ying Ju, Pei Bian
• Keywords: Boric Acid, Electromagnetic Properties, Ferrite, MnCuZn, NiCuZn

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100 200 300 11.

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[2] m ol%_μ.

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[3] m ol%_μ.

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[4] m ol%_μ.

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100 200 300 400 500 600 700 800 00. 511. 52 H3BO3 c o n te n t / m ass% 3-point bendin g stre n gth / M P a 800 850 900 950 900ºC MnCuZn ºC NiCuZn.