| 摘要 |
PROBLEM TO BE SOLVED: To obtain an extra-high pressure and high temp. generator in which stable high pressure can be generated by using a zirconia comprising cubic and/or tetragonal system and monoclinic system and having specified value or less in respect of Xm value calculated by specified formula to constitute a pressurizing plate. SOLUTION: In this extra-high pressure and high temp. generator, a cylinder body 1 is arranged between a pair of anvils 2, and a gasket 7 is inserted between the cylinder body 1 and the anvils 2 to form a reaction room in the center space between the cylinder body 1 and the anvils 2. Further, a pressurizing plate 3 is disposed between the reaction room and the anvil 2, and a pressure medium 9 is disposed between the reaction room and the cylinder body 1. The pressurizing plate 3 consists of such a zirconia that consists of a cubic or tetragonal system and a monoclinic system and has <=0.3Xm (including zero) calculated according to the formula I. Xm=Im(T11)+Im(111)/Im(T11)+Im(111)+1c(111) In the formula, Xm is the index of the amt. of the monoclinic crystal, Im(-111) is the integral intensity of the diffraction peak of-111 in the monoclinic system, Im(111) is the integral intensity of the diffraction peak of 111 in the monoclinic system, and Ic(111) is the integral intensity of the diffraction peak of 111 in the cubic system. crystal. |
