Abstract
In the present paper, investigation on wettability and contact angle measurement of twenty-one SAW fluxes for CaO-SiO2-TiO2 & Al2O3-CaO-SiO2 welding flux system at a temperature of 1300 °C was studied. Wettability observed by measuring the contact angle properties of twenty-one SAW fluxes. The purity of flux constituents determined by the XRF technique. Si-O-Si and Al-O-Al symmetric bond behaviour and various crystalline phases observed using FTIR and XRD techniques. Lower contact angle gives higher wetting and spreading properties. The contact angle increased with the increase of TiO2/SiO2 ratio. For the composition range 1.5 to 2.0, there is a higher value of contact angle observed. A maximum increase of contact angle noticed for the composition range 1.5 to 2.0. There is a constant rise in the amount of contact angle for the composition that varies from 1.0 to 1.2.
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