The high-temperature surface tension of glass is a crucial parameter for assessing its corrosive behaviour towards the refractory materials of the palisade, particularly as it determines whether the glass will cause generalised, uniform corrosion, or localised corrosion along the metal line (triple point, Marangoni effect), with the formation of the characteristic ‘coup de sabre’.

Furthermore, surface tension is a property of paramount importance in the production of glass fibres, as it has a fundamental impact on the operational settings of the production line, on the feasibility and methods of spinning the melt, etc.

The determination of high-temperature surface tension is carried out using a method specifically optimised in-house by SSV.