PROBLEM TO BE SOLVED : To provide an α-sialon sintered compact having high hardness and toughness, and a method of manufacturing the α-sialon sintered compact at a low cost.
SOLUTION : The α-sialon sintered compact uses silicon (Si) powder as raw material powder, is obtained through the nitride reaction sintering of silicon and composed essentially of ≥95 wt.% α-sialon particle expressed by a composition formula, Rx(Si, Al)12(O, N)16 (where, 0.33
