Title:
ガラスセラミックス及び温度補償部材
Document Type and Number:
Japanese Patent JP4773608
Kind Code:
B2
Abstract:
A 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 mu m, and a coefficient of thermal expansion thereof is -30 x 10<-7> to -90 x 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.
Inventors:
Ayako Shindo
Application Number:
JP2000296684A
Publication Date:
September 14, 2011
Filing Date:
September 28, 2000
Export Citation:
Assignee:
OHARA CORPORATION
International Classes:
C03C10/12; G02B6/36; C03C10/00; C03C10/14; G02B6/00
Domestic Patent References:
| JP2001342038A |
Attorney, Agent or Firm:
Hiroshi Arafune
Yoshio Arafune
Yoshio Arafune