Glass: Chemical and Thermal Strengthening

Talimian, Ali; Sglavo, Vincenzo M.

doi:10.1016/b978-0-12-818542-1.00075-8

Cited by 3 publications

(2 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Chemical strengthening is usually carried out through diffusive ion exchange, by immersing lithium or sodium‐bearing glasses in a bath of molten salt containing larger alkali cations (e.g., KNO 3 ) at a temperature below the glass transition temperature 3 . Stuffing larger alkali cations from the melt (i.e., K + ) into the smaller alkali sites at the glass surface (i.e., Li + or Na + ) produces a residual surface compressive layer that suppresses the formation and growth of surface flaws, thereby enhancing the strength of the final glass product 4–7 …”

Section: Introductionmentioning

confidence: 99%

Hardness and scratch resistance of chemically strengthened alkali‐borosilicate thin glass

Talimian,

Limbach,

Galusek

et al. 2024

J Am Ceram Soc.

Self Cite

View full text Add to dashboard Cite

Chemical strengthening of glass represents a standard technology for fabricating damage‐resistant protective covers. Still, little attention has been paid to modifications in the tribological properties of ion‐exchanged glass surfaces. This work reports on scratch testing of a chemically strengthened alkali‐borosilicate thin glass. Diffusive Na+/K+‐ion exchange produces a residual surface compressive layer with compressive stress of 200–340 MPa and layers depths between 16 and 50 µm, depending on exchange temperature and treatment time. This leads to notable changes in the surface mechanical properties, such as an increase in surface Young's modulus, indentation, and scratch hardness. Surprisingly, the Na+/K+‐ion exchange is shifting the onsets of scratch‐induced microcracking and microcracking to lower normal loads. The accelerated buildup of lateral indentation stress in glasses with high scratch hardness was found to be responsible for the lower threshold loads of microcracking and abrasive wear in chemically strengthened alkali‐borosilicate thin glass.

show abstract

Section: Introductionmentioning

confidence: 99%

Hardness and scratch resistance of chemically strengthened alkali‐borosilicate thin glass

Talimian,

Limbach,

Galusek

et al. 2024

J Am Ceram Soc.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The advantages of thermal tempering are twofold: (i) the production process is accelerated significantly, and (ii) the material's mechanical performance can be improved thanks to the presence of compressive residual stresses on the surfaces of the specimen [5][6][7].…”

Section: Introductionmentioning

confidence: 99%