FIELD: chemistry.
SUBSTANCE: invention relates to an abrasive grain based on melted in an electric arc furnace Al2O3 and ZrO2 with content of Al2O3 from 52 to 62 wt % and ZrO2 from 35 to 45 wt %. A high-temperature phase of zirconium oxide is stabilised with a combination of reduced compounds of Ti and yttrium oxide.
EFFECT: improvement of the abrasive grain productivity.
7 cl, 4 dwg, 4 tbl, 3 ex
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