| 摘要 |
PROBLEM TO BE SOLVED: To provide a low thermal expansion ceramic setter that has a low thermal expansion, high strength, abrasion resistance and water absorption that are required for a large size setter for a large-sized firing furnace with the reduced production cost. SOLUTION: The objective low expansion ceramic setter comprises the β-spodumene substance or the β-eucryptite substance that contains 1-50 wt.% of zirconia and 0.05-10 wt.% of other metal oxides than zirconia used as a sintering additive. In this ceramic setter, the hollow parts of 0.8-90 μm diameter and 8-90,000 μm length are scattered in varying directions. |
