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The possible interactions near the triple-phase boundaries (TPB) metal/glass/air, and their effects on joint strength are investigated. Two types of samples (joined couples and glass coated coupons) are prepared with the coupon of AISI 430 (nickel plated and uncoated) and a slurry of compliant silicate sealing glass (SCN-1). The joined and coated samples are heated at 850 °C for 1000 h in air. The joined couples are cooled using two different schedules and then tested in uniaxial tension. For investigating the metal-oxides precipitation procedure in glass near the TPB, glass coated coupons are either cooled at the rate of 5 °C min −1 or water-quenched from aging temperature. The mechanical test results and microstructural observations show that the spread and accelerated breakaway oxidation near TPB, which is due to continuous oxidation and dissolution of ferritic stainless steel (FSS) into the glass, leads to decreased and scattered low temperature joint strengths. [ABSTRACT FROM AUTHOR]

Abstract: The effect of the surface compressive stress (CS) on the hardness and Young's modulus of the ion-exchanged aluminosilicate float glass on air and tin sides are investigated. The hardness and Young's modulus are experimentally measured by nanoindentation. As a result, the surface hardness and Young's modulus of aluminosilicate float glass can be enhanced by chemical strengthening. The hardness increases with an increase in the CS, whereas Young's modulus is not obviously influenced by CS. The hardness and Young's modulus on the air and tin sides are almost the same before ion exchange. However, the tin side always has greater hardness than the air side after the ion exchange. The results would be useful in guiding the strengthening process of float glass by one step ion-exchange or two step ion-exchange to obtain engineered stress profile (ESP) glasses. [Copyright &y& Elsevier]

Abstract: The difference between the inter-diffusion kinetics of K+–Na+ in the air and tin sides of an ion-exchanged float aluminosilicate glass was investigated as a function of the exchange temperature and time. The potassium concentration profiles of the ion-exchanged glass surface were experimentally measured by electron microprobe analysis, and the diffusion coefficient was calculated by the Boltzmann-Montano approach. On the tin side of the ion-exchanged glass, the diffusion of K+–Na+ ions is hindered by tin. The diffusion coefficient is also more sensitive to temperature and time on the tin than on the air sides. The results would be useful in guiding the strengthening process of float glass by one step ion-exchange or two step ion-exchange to obtain engineered stress profile (ESP) glasses. [Copyright &y& Elsevier]

Abstract: Optical properties of soda-lime glass manufactured by the float process were investigated using spectroscopic ellipsometry and intensity transmission measurements. Thickness and optical properties of surface layers on the air and tin sides were determined with ellipsometry. The tin side surface layer shows a graded refractive index with a non-linear profile. Intensity transmission data were used to quantify absorption in the bulk glass. Transmission-mode generalized ellipsometry characterized residual birefringence in the bulk glass. Birefringence effects on ellipsometric delta data were corrected using a simple empirical offset with 1/wavelength dependence. A general optical model for soda-lime glass is presented which can be used for subsequent analysis of coated soda-lime glass and other transparent substrates. [Copyright &y& Elsevier]