The invention relates to the technical field of base
magnetic refrigeration materials, and discloses a method for assessing content of impure phases in a LaFeSi-base
magnetic refrigeration material. The method comprises the following steps that XRD detection is carried out on a plurality of LaFeSi-base
magnetic refrigeration material samples with the content of the impure phases being 3-12%, the sample with the content of the impure phases being 3%, the sample with the content of the impure phases being 6%, the sample with the content of the impure phases being 9% and the sample with the content of the impure phases being 12% are screened out, a standard permanent
magnet detection block with the
mass being X1, a standard permanent
magnet detection block with the
mass being X2, a standard permanent
magnet detection block with the
mass being X3 and a standard permanent magnet detection block with the mass being X4 are acquired and manufactured, an impure phase content assessment form is formulated, the LaFeSi-base magnetic
refrigeration material to be detected is taken and fixed to a lifting rod and makes contact with the standard permanent magnet detection block with the mass being X1, the standard permanent magnet detection block with the mass being X2, the standard permanent magnet detection block with the mass being X3 and the standard permanent magnet detection block with the mass being X4 in sequence, and the content of the impure phases is assessed according to whether the permanent magnet detection blocks are attracted to the LaFeSi-base magnetic
refrigeration material or not. The method has the
advantage that the content of the impure phases in the LaFeSi-base magnetic
refrigeration material can be quickly, efficiently and visually assessed.