Glass coating method and glass coated thereby

Details Glass coating method and glass coated thereby Glass coating method and glass coated thereby

C - Chemistry, Metallurgy

03

C

C03C 17/245 (2006.01) B32B 17/06 (2006.01) C23C 16/40 (2006.01)

Patent

CA 2159296

A method of pyrolytically forming a silica-containing coating on a glass substrate at an elevated temperature. Silane, oxygen, a radical scavenger gas and a carrier gas are combined as a precursor mixture, and the precursor is directed toward and along the surface of the heated glass substrate. The presence of the radical scavenger allows the silane, which is pyrophoric, to be premixed with the oxygen without undergoing ignition and premature reaction at the operating temperatures. The radical scavenger further provides control of and permits optimization of the kinetics of the chemical vapor deposition (CVD) reaction on the glass. A preferred combination of precursor materials includes monosilane and oxygen, with ethylene as the radical scavenger, and including nitrogen as a carrier gas.

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