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The glass formability of Ni_(75)B_(17)Si_8 melt and the thermostability of this metallic glass formedfrom the the melt can be enhanced by eliminating the heterogeneous catalystg. The purificationwas done by cyclical superheating melt in special glasses and subsequently cyclicallysuperheating it in an electromagnetic levitation apparatus. The purified Ni_(75)B_(17)Si_8 amorphoussample sized up to 20 ~ I0 x 0.5 mm was prepared as four times the thickness of unpurifiedones.
The glass formability of Ni_ (75) B_ (17) Si_8 melt and the thermostability of this metallic glass formed from the melt can be enhanced by eliminating the heterogeneous catalystg. The purificationwas done by cyclical superheating melt in special glasses and subsequently cyclically superheating it in an The purified Ni_ (75) B_ (17) Si_8 amorphoussample sized up to 20 ~ I0 x 0.5 mm was prepared as four times the thickness of unpurifiedones.