Enhanced tribological properties of barium boroaluminosilicate glass by thermal poling

Hongtu He, Jiaxin Yu, Linmao Qian, Carlo G. Pantano, Seong H. Kim

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

Mechanical and tribological properties of barium boroaluminosilicate glass (commercial AF45® glass) treated with a thermal poling process employing 4 kV bias at 600 °C were studied. Compared to the pristine AF45 glass, the anode-side surface of the thermally poled glass has lower modifier ion concentrations and lower reduced modulus and hardness, while the cathode-side surface has increased modifier ion concentrations and shows an increase in reduced modulus and hardness. Both pristine and anode-side surfaces become more susceptible to wear as relative humidity (RH) of the surrounding environment increases from 20% to 90%; in contrast, the cathode-side surface exhibits a remarkable wear resistance at 90% RH. It was speculated that the increased wear resistance of the cathode-side surface at high RH conditions might be due to the accumulation of leachable modifier ions (especially sodium ions) in the subsurface region. These results may serve as a design rule to control the mechanochemical wear damage of optical glasses and optimize the tribological design of functional and engineering glasses in humid conditions.

Original languageEnglish (US)
Pages (from-to)337-342
Number of pages6
JournalWear
Volume376-377
DOIs
StatePublished - 2017

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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