Jointing material comprising a mixture of boron oxide and...

Details Jointing material comprising a mixture of boron oxide and... Jointing material comprising a mixture of boron oxide and...

2007-04-03

2007-04-03

Fletcher, III, William Phillip (Department: 1762)

Compositions: coating or plastic

Coating or plastic compositions

Inorganic materials only containing at least one metal atom

C106S286800, C106S287170, C427S383500, C427S419300

Reexamination Certificate

active

10415238

ABSTRACT:
A coating film is formed on a substrate of sapphire by coating the substrate with a jointing material prepared by dissolving Al(OC2H5)3and B(OCH3)3into xylene. Subsequently, the substrate is heated to about 450 ° C. and the coating film is irradiated with, e.g., ultraviolet radiation having a wavelength of 172 nm. Thus, xylene in the coating film is vaporized, and Al(OC2H5)3and B(OCH3)3are thermally decomposed to form a jointing material composed of amorphous or γ-layer alumina (Al2O3) and amorphous boron oxide (B2O3).

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