Corning Incorporated
X-ray induced coloration in glass or glass-ceramic articles

Abstract:

Embodiments of the present disclosure are directed to methods for inducing color change in glass and glass-ceramic articles. According to one embodiment, color change may be x-ray induced in glass or glass-ceramic articles. The method for x-ray inducing color change may include exposing the glass or glass-ceramic article to x-rays at a temperature of up to 200.degree. C. to induce a colored area in the glass or glass-ceramic article. The glass or glass-ceramic article may comprise: 50-85 mole % SiO.sub.2; 5-25 mole % Al.sub.2O.sub.3; 0-15 mole % P.sub.2O.sub.5; 0-15 mole % B.sub.2O.sub.3; 5-25 mole % R.sub.2O, wherein R.sub.2O.dbd.Li.sub.2O+Na.sub.2O+K.sub.2O.