abstract |
Provided is a zirconia sintered body that has high strength and suppresses the progress of low-temperature deterioration. The zirconia sintered body has partially stabilized zirconia as a matrix phase and contains at least one element of phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi). The zirconia sintered body contains the element in an amount of 4 × 10 −4 mol to 4 × 10 −2 mol with respect to 1 mol of zirconium oxide (IV). Preferably, the zirconia sintered body further contains 0.03 mass% to 3 mass% of silicon dioxide. |