NiCuZn FERRITE POWDER FOR MICROWAVE ABSORPTION HEATING ELEMENT AND THE MICROWAVE ABSORPTION HEATING ELEMENT USING THE POWDER

摘要

PROBLEM TO BE SOLVED: To provide NiCuZn ferrite powder for a microwave absorption heating element which can optionally select a temperature-rising stop temperature in a wide range of 50-550°C.

SOLUTION: The NiCuZn ferrite powder has a predetermined component composition. An average particle size of the NiCuZn ferrite powder is 2-500 μm, and a relationship between the temperature-rising stop temperature Ts (°C) of the NiCuZn ferrite powder and a value σs1(emu/g) of saturation magnetization at the temperature-rising stop temperature Ts satisfies the following formula (1): σs1≥0.06×Ts-1.38.

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