Leaching behavior of cathode ray tube (CRT) glasses

Masaru Yamashita, Sachiko Matsumoto, Tomoko Akai, Hajime Sugita, Yukari Imoto, Takeshi Komai, Hirofumi Sakanakura

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The leaching behavior of cathode ray tube (CRT) funnel and neck glasses were compared in 0.001 N HCl and 0.001 N NaOH at 70 and 90°C. We measured the weight loss and leached amount of each component and observed the surface changes by scanning electron microscopy (SEM). In acid solution funnel glass showed t1/2-dependent leaching, whereas neck glass only demonstrated congruent dissolution after 8 weeks. In basic solutions leaching behavior was almost equivalent for both types of glass. Dissolution halted after one or two weeks as a result of the deposition of a protective layer. This layer was formed by saturation of Pb and was subsequently dissolvable by refreshing the leachant solution.

Original languageEnglish
Pages (from-to)1020-1027
Number of pages8
JournalJournal of the Ceramic Society of Japan
Volume122
Issue number1432
DOIs
Publication statusPublished - 2014 Jan 1

Keywords

  • CRT glass
  • Chemical durability
  • Environmental safety
  • Leaching
  • Lead silicate glass

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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