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Effect of lithium compounds on the functional characteristics of fluxes for brazing aluminium

The results of investigation of the effect of additions of lithium compounds (LiNO3, LiCl, LiBr, LiF) in the KF–AlF3 eutectic on the spreading of the brazing alloy, strength and microstructure of brazed joints are presented. The dependences of the spreading area of the brazing alloy on the content of the investigated compounds, the microstructure and the results of mechanical tests of the brazed joints are discussed.