RARE EARTH MAGNET SEALING BODY AND MANUFACTURING METHOD THEREOF

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PROBLEM TO BE SOLVED : To provide a rare earth magnet having no risk to be decomposed due to hydrogen fragility when it is used in a hydrogen gas atmosphere and to contaminate a reaction vessel with a magnet surface processing film. SOLUTION : This rare earth magnet sealing body 1 comprises a rare earth magnet 2 and a case 3 which covers the entire part of the rare earth magnet and includes aluminum or an aluminum alloy sealed by HIP treatment.