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 Citations (Scopus)

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 - Jan 1 2017

Fingerprint

Barium
barium
Glass
glass
Ions
Atmospheric humidity
Cathodes
humidity
cathodes
Wear resistance
ion concentration
wear resistance
Anodes
Hardness
Wear of materials
anodes
Optical glass
hardness
Sodium
Hot Temperature

All Science Journal Classification (ASJC) codes

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

Cite this

He, Hongtu ; Yu, Jiaxin ; Qian, Linmao ; Pantano, Carlo G. ; Kim, Seong H. / Enhanced tribological properties of barium boroaluminosilicate glass by thermal poling. In: Wear. 2017 ; Vol. 376-377. pp. 337-342.
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Enhanced tribological properties of barium boroaluminosilicate glass by thermal poling. / He, Hongtu; Yu, Jiaxin; Qian, Linmao; Pantano, Carlo G.; Kim, Seong H.

In: Wear, Vol. 376-377, 01.01.2017, p. 337-342.

Research output: Contribution to journalArticle

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T1 - Enhanced tribological properties of barium boroaluminosilicate glass by thermal poling

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AU - Yu, Jiaxin

AU - Qian, Linmao

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AU - Kim, Seong H.

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AB - 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.

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