The effect of single-side ion exchange on the flexural strength of plain float glass and float glass containing a drilled hole

• The effect of single-side ion exchange (using a KNO3:KCl mixture) on the ring-on-ring flexural strength of float glass has been studied. Two ion exchanged series, treated at 450 and 515°C, were investigated. The ion exchanged samples showed approximately 160 respectively 100% increases in their arithmetic mean strength compared to as-received float glass. Furthermore, a series of samples containing drilled holes were studied in order to investigate the effect of singleside ion exchange on such common construction elements. The samples that contained drilled holes were ion exchanged at 450°C and showed around 140% increase of the fracture load compared to the untreated samples containing drilled holes. As a general observation, the ion exchange treatment induced ∼110 MPa compressive stresses (515°C) and ∼180 MPa compressive stresses (450°C). The ion exchanged samples showed no significant increase in stiffness.

Nyckelord

Arithmetic mean

Construction elements

Drilled holes

Float glass

Fracture load

Ion-exchange treatment

Bending strength

Compressive stress

Glass

Ions

Ion exchange

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)