The invention provides a preparation method of high-magnetic-induction grain-oriented
silicon steel EBSD samples. According to the technical scheme, 1 to 10 different types of high-magnetic-induction grain-oriented
silicon steel are
cut into original samples independently, wherein the size of original samples meets the equation RD*ND*TD=(9-11)*(0.3-4)*(4-6); the original samples are embedded in a
conductivity type inlay to obtain an inlay sample; mechanical
polishing is conducted on the inlay sample, the inlay sample is
cut into
cut samples with the size meeting the equation RD*ND*TD=(14-16)*(6-8)*Hmm, and washing and blow-
drying are conducted; then, materials are prepared according to the volume ratio, of NHO3 to glacial
acetic acid to C2H5OH, of 4 to 1 to 94-97, and mixing is conducted to obtain destressed corrosive liquid; finally, the destressed corrosive liquid is dropwise added to the target observation faces of the cut samples at the speed of 1-2 drops per second for 8-10 seconds, and rapid cleaning and blow-
drying are conducted. The preparation method has the advantages that operation is easy and convenient, the requirement for conducting
data acquisition on high-magnetic-induction grain-oriented
silicon steel in the whole thickness direction can be met, the vacuumizing time can be saved, and the detection efficiency can be improved.