Overcoating inorganic composition

Details Overcoating inorganic composition Overcoating inorganic composition

1992-03-11

1993-11-09

Group, Karl

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 17, 501 75, 501 77, C03C 814, C03C 416

Patent

active

052602370

ABSTRACT:
An overcoating inorganic composition is applied to a ceramic substrate for forming an overcoat thereon which has improved flexural strength, matches in thermal expansion with the substrate, and is reliable in that it is free of a crack and causes no variation in the resistance of thick film resistors even under rigorous service conditions. The overcoating inorganic composition contains 70-90% by volume of an inorganic glass component and 10-30% by volume of mullite powder and has a coefficient of thermal expansion in the range of from 50.times.10.sup.-7 to 75.times.10.sup.7 /.degree. C.

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