| 摘要 |
PROBLEM TO BE SOLVED: To provide a member for a heat treatment containing a zirconia sintered body having more excellent corrosion resistance and durability than conventional zirconia sintered bodies with CaO as a stabilizer.SOLUTION: There is provided member for a heat treatment containing a zirconia sintered body satisfying following requirements (a) to (f). (a) ZrO/CaO (mole ratio) is 90/10 to 80/20. (b) CaO/MgO (mole ratio) is 99/1 to 95/5. (c) The amount of AlOis 0.20 wt.% or less. (d) The amount of impurities is 0.10 wt.% or less. (e) A bulk density is 5.2 g/cmor more. (f) An average crystal grain diameter is 10 to 40 μm. |
