Dry process for its manufacture and Dyson Zeno time ceramic block

摘要

Substantially made from a substantially homogeneous _{(Y 2 O 3) x ·} P 2 O 5, wherein a 0.95 ≦ x ≦ 1.05, has a length LL, width WW and a height HH , at least 8 × ¹⁰ -3 ^{m 3} of volume VV, substantially no cracks throughout the volume, at least 85% of the density of the theoretical maximum density of the _{Y 2 O 3 · P 2 O} 5 under standard conditions the a, has a creep rate CR at 1250 ° C. and 6.89 MPa, wherein a CR ≦ 8.0 × ^{10 -6} / time, the ceramic block and a method for making same. Method, starting YPO ₄ based ceramic material is synthesized by the reaction of dry _Y 2 _{O 3} powder of anhydrous _P 2 _{O 5,} utilizes a dry process.