Patent ID: 9657409
Date: 2017-05-23
CPC Classifications: C01B,C04B,C08G,C08L,C30B,H01L

Claim:
1. A method of making an article comprising ultra pure silicon carbide, the method comprising: a. combining a first liquid comprising silicon, carbon and oxygen with a second liquid comprising carbon; b. curing the combination of the first and second liquids to provided a cured SiOC solid material, consisting essentially of silicon, carbon and oxygen; c. heating the SiOC solid material in an inert atmosphere and at a temperature sufficient to convert SiOC to SiC, thereby converting the SiOC solid material to an ultra pure polymer derived SiC having a purity of at least 99.9999%; and, d. forming a single crystal SiC structure by vapor deposition of the ultra pure polymer derived SiC; wherein the vapor deposed structure is defect free and has a purity of at least 99.9999%.