Difference in Structural Relaxation Times of Inner Surface and Inner Bulk Region of Silica Glass Arc Tube - New Journal of Glass and Ceramics

NJGC > Vol.3 No.1, January 2013

Difference in Structural Relaxation Times of Inner Surface and Inner Bulk Region of Silica Glass Arc Tube ()

HTML XML

Download as PDF (Size: 1040KB) PP. 48-52

DOI: 10.4236/njgc.2013.31008 4,079 Downloads 6,289 Views Citations

Author(s)

Takuya Honma, Nobuhiro Tamura, Kazuya Saito, Edson Sekiya

Affiliation(s)

Protection & Material Engineering Department, Toshiba Lighting & Technology Corporation, ,Yokosuka, Japan.
Research Center for Advanced Photon Technology, Toyota Technology Institute, Nagoya, Japan.

ABSTRACT

The fictive temperature and structural relaxation of a silica glass arc tube were investigated to elucidate the origin of cracking in the arc tubes used in high-intensity discharge lamps for vacuum ultraviolet light sources. The structural relaxation time near the inner surface was decreased much more than that in the inner bulk region, resulting in a large difference in the fictive temperature between these two areas at high-intensity discharge lamp operating temperatures. This difference should induce strain in the silica glass network. On the basis of our results, we suggest ways to avoid cracking and extend the lifetime of high-intensity discharge lamps.

KEYWORDS

Structural Relaxation Time; Fictive Temperature; High-Intensity Discharge Lamps

Share and Cite:

T. Honma, N. Tamura, K. Saito and E. Sekiya, "Difference in Structural Relaxation Times of Inner Surface and Inner Bulk Region of Silica Glass Arc Tube," New Journal of Glass and Ceramics, Vol. 3 No. 1, 2013, pp. 48-52. doi: 10.4236/njgc.2013.31008.

Journals Menu

Follow SCIRP

	+1 323-425-8868
	customer@scirp.org
	+86 18163351462(WhatsApp)
	1655362766

	Paper Publishing WeChat

Journals Menu

Home

About SCIRP

Service

Policies