MAGNETIC REFRIGERATION SUBSTANCE, AND MANUFACTURING METHOD THEREFOR
PROBLEM TO BE SOLVED: To provide a magnetic refrigeration substance of R-Fe-Si-H based alloy powder subjected to an anticorrosive film forming process excellent in productivity and inexpensive, and to provide a manufacturing method for the magnetic refrigeration substance. SOLUTION: The powdered mag...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a magnetic refrigeration substance of R-Fe-Si-H based alloy powder subjected to an anticorrosive film forming process excellent in productivity and inexpensive, and to provide a manufacturing method for the magnetic refrigeration substance. SOLUTION: The powdered magnetic refrigeration substance is composed of a compound phase virtually having an NaZn13-type crystal structure. The magnetic refrigeration substance has an anticorrosive oxide film that is formed by an alkoxide solution on part or the whole of the powder surface. It is preferable that the anticorrosive oxide film has a thickness of 10 nm or more to 1 μm or less and is made of any one or more of SiO2, TiO2, MgO, Al2O3and Zr2O3. COPYRIGHT: (C)2010,JPO&INPIT |
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