Highly durable silica glass containing 0.01% to 2% by weight of at least one element selected from magnesium, calcium, strontium, barium, yttrium, hafnium and zirconium. The silica glass is produced by melting a powdery material comprising a finely divided silica powder and a finely divided zirconium-containing...http://www.google.es/patents/US20030040423?utm_source=gb-gplus-sharePatente US20030040423 - Higly durable silica glass, process and apparatus for producing same, and member and apparatus provided with same
Higly durable silica glass, process and apparatus for producing same, and ...
