Manganese cordierite glass-ceramics

Details Manganese cordierite glass-ceramics Manganese cordierite glass-ceramics

1978-09-22

1980-03-04

Gantz, Delbert E.

Compositions: coating or plastic

Coating or plastic compositions

Marking

106 734, C03C 322

Patent

active

041915836

ABSTRACT:
Glass-ceramic products having a manganese-containing cordierite crystal structure and being impervious void free bodies exhibiting low coefficients of thermal expansions of .about.15.times.10.sup.-7 /.degree. C. (25.degree.-1000.degree. C.) and high electrical resistivity are obtained by the sintering of glass or glass-ceramic powders having the molar composition of about 2RO.2Al.sub.2 O.sub.3.5SiO.sub.2, wherein RO is a combination of MgO and MnO.

REFERENCES:
patent: 3450546 (1969-06-01), Stong
patent: 3885977 (1975-05-01), Lachman et al.
patent: 3926838 (1975-12-01), Reade
patent: 3940255 (1976-02-01), Harrington et al.
patent: 4015048 (1977-03-01), Martin

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