Patent ID: 11919805
Assignee: CORNING INCORPORATED
Field: Materials, metallurgy (Chemistry)
Classification: CPC C | IPC C

Claim 3:
4. A method of forming a silica-based substrate, the method comprising:
contacting a porous silica soot preform with an organic solution comprising at least one hydrocarbon precursor to form a doped silica soot preform;
heating the doped silica soot preform in an inert atmosphere to form the silica-based substrate,
wherein the hydrocarbon precursor comprises at least one of:, (a) alkanes of the form CnH2n+2;, (b) alkenes of the form CnH2n;, (c) carboxylic acids, amines, or alcohols with an aliphatic group of at least 6 carbon atoms;, (d) metal carboxylates;, (e) graphite powder; amorphous carbon powder; paraffin wax; or phenolic resin; or, (f) organic polymers;
wherein n>6.