Low thermal expansion cordierite aggregate and its bonded body

Details Low thermal expansion cordierite aggregate and its bonded body Low thermal expansion cordierite aggregate and its bonded body

1994-08-11

1996-09-03

Marcantoni, Paul

Compositions: ceramic

Ceramic compositions

Devitrified glass-ceramics

501118, 501119, 501153, C04B 3504

Patent

active

055523498

ABSTRACT:
A low thermal expansion cordierite aggregate, which consists mainly of cordierite crystals having a mean crystal diameter of at least 50 .mu.m and has little orientation in the crystal structure, shows hysteresis in its thermal expansion property accompanying a rise and fall of the temperature, and has a mean thermal expansion coefficient within a temperature range of from room temperature to 1000.degree. C. of at most 10.times.10.sup.-7 /.degree.C.

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