| Application Number | 00129499 | Application Date | 2000.12.29 |
| Publication Number | 1345700 | Publication Date | 2002.04.24 |
| Priority Information | 2000/9/28 JP 296684/00 | ||
| International Classification |
C03C10/00;C03C10/12;C03B32/02 | ||
| Applicant(s) Name | Ohara K.K. | ||
| Address | |||
| Inventor(s) Name | Shinto Saiko | ||
| Patent Agency Code | 72001 | Patent Agent | lu xinhua |
| AbstractA glass ceramic comprises a main crystal phase which comprises at least one selected from a group consisting of beta-eucryptite (beta-Li2O.Al2O3.2SiO2), beta-eucryptite solid solution (beta-Li2O.Al2O3.2SiO2 solid solution), beta-quartz (beta-SiO2), and beta-quartz solid solution (beta-SiO2 solid solution), wherein an average grain size of the main crystal phase is less than 5 mum, and a coefficient of thermal expansion thereof is -30×10-7 to -90×10-7/ DEG C. in a temperature range of -40 DEG C. to +160 DEG C., and a hysteresis of the coefficient of thermal expansion is not more than 20 ppm. | |||