Atmosphere control method for sintering process of high-frequency wide-temperature low-loss MnZn ferrite

The invention provides a sintering atmosphere control method in preparation of high-frequency wide-temperature low-loss MnZn ferrite. The method comprises the following steps: carrying out primary heating and heat preservation, carrying out secondary heating and heat preservation, cooling, carrying...

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Hauptverfasser:	HUO HUAXIN, WEI ZHONGHUA, JIN JIAYING, BAI GUOHUA, DU YANGZHONG, YAN MI, BAO DAXIN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ARTIFICIAL STONE BASIC ELECTRIC ELEMENTS CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE ELECTRICITY INDUCTANCES LIME, MAGNESIA MAGNETS METALLURGY REFRACTORIES SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES SLAG TRANSFORMERS TREATMENT OF NATURAL STONE
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creator	HUO HUAXIN WEI ZHONGHUA JIN JIAYING BAI GUOHUA DU YANGZHONG YAN MI BAO DAXIN
description	The invention provides a sintering atmosphere control method in preparation of high-frequency wide-temperature low-loss MnZn ferrite. The method comprises the following steps: carrying out primary heating and heat preservation, carrying out secondary heating and heat preservation, cooling, carrying out heat preservation, and finally cooling. According to the method, corresponding oxygen partial pressure is adjusted at different temperatures and in different temperature changing processes, zinc loss in a sintering process can be reduced, and element valence change and impure phase precipitationat high temperature are inhibited, so that the soft magnetic property of the material is improved; and by adding reasonable heat preservation time, sintering internal stress can be effectively reduced, and the material is prevented from cracking in the sintering process. The method provided by the invention is applicable to preparation of multiple MnZn ferrites, and the wide-temperature low-lossMnZn power ferrite used at
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subjects	ARTIFICIAL STONE BASIC ELECTRIC ELEMENTS CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE ELECTRICITY INDUCTANCES LIME, MAGNESIA MAGNETS METALLURGY REFRACTORIES SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES SLAG TRANSFORMERS TREATMENT OF NATURAL STONE
title	Atmosphere control method for sintering process of high-frequency wide-temperature low-loss MnZn ferrite
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