Alkali emission accompanying fracture of sodium silicate glasses

S. C. Langford, L. C. Jensen, J. T. Dickinson, L. R. Pederson

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Measurements of atomic Na emission accompanying the fracture of sodium trisilicate glass and a soda lime glass in vacuum were made by quadrupole mass spectroscopy and surface ionization techniques. Peak Na° emission intensities occur some 3-6 ms after the fracture event and decay over tens of milliseconds. This behavior is attributed to the diffusion of Na+ ions into a layer of damaged material at the surface where the ions are subsequently neutralized and thermally emitted as Na°. Charge carriers generated during fracture and subsequently trapped at defect sites apparently play important roles in charge compensating Na+ diffusion and in neutralizing Na+. During the first 300 ms following fracture, we also observe intense, short lived (400 μs) bursts in Na° emission which may be associated with catastrophic relaxation of residual stresses. The kinetics of Na emission suggest that the relaxation of newly formed glass surfaces involves rather complex surface physical and chemical processes.

Original languageEnglish
Pages (from-to)1358-1368
Number of pages11
JournalJournal of Materials Research
Volume6
Issue number6
Publication statusPublished - Jun 1991
Externally publishedYes

Fingerprint

sodium silicates
Alkalies
Silicates
alkalies
Sodium
Glass
glass
Ions
surface ionization
calcium oxides
Charge carriers
Lime
residual stress
Ionization
charge carriers
Residual stresses
bursts
ions
mass spectroscopy
quadrupoles

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Langford, S. C., Jensen, L. C., Dickinson, J. T., & Pederson, L. R. (1991). Alkali emission accompanying fracture of sodium silicate glasses. Journal of Materials Research, 6(6), 1358-1368.

Alkali emission accompanying fracture of sodium silicate glasses. / Langford, S. C.; Jensen, L. C.; Dickinson, J. T.; Pederson, L. R.

In: Journal of Materials Research, Vol. 6, No. 6, 06.1991, p. 1358-1368.

Research output: Contribution to journalArticle

Langford, SC, Jensen, LC, Dickinson, JT & Pederson, LR 1991, 'Alkali emission accompanying fracture of sodium silicate glasses', Journal of Materials Research, vol. 6, no. 6, pp. 1358-1368.
Langford SC, Jensen LC, Dickinson JT, Pederson LR. Alkali emission accompanying fracture of sodium silicate glasses. Journal of Materials Research. 1991 Jun;6(6):1358-1368.
Langford, S. C. ; Jensen, L. C. ; Dickinson, J. T. ; Pederson, L. R. / Alkali emission accompanying fracture of sodium silicate glasses. In: Journal of Materials Research. 1991 ; Vol. 6, No. 6. pp. 1358-1368.
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