Premium
Thermal Expansion Behavior of Boron‐Doped Cordierite Glass‐Ceramics
Author(s) -
Nandi Asok Kumar
Publication year - 1999
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1999.tb01839.x
Subject(s) - cordierite , thermal expansion , materials science , ceramic , doping , boron , mineralogy , potassium , atmospheric temperature range , composite material , analytical chemistry (journal) , chemistry , thermodynamics , metallurgy , physics , optoelectronics , organic chemistry , chromatography
The linear thermal expansion coefficients of cordierite glass‐ceramics that have been doped with a fixed amount of P 2 O 5 and 1, 2, and 3 wt% of B 2 O 3 show negative expansion in the temperature range of 100°‐300°C. The expansion of the undoped cordierite sample is positive. A relative decrease in the degree of negative expansion is observed as the B 2 O 3 concentration increases. These negative expansion coefficients are similar to those of cordierite glass‐ceramics that have been doped with the potassium cation.