SOLDER FOR FLUXLESS SOLDERING Russian patent published in 2011 - IPC B23K35/28 

FIELD: chemistry.

SUBSTANCE: invention can be used to obtain permanent joints between different materials, particularly for low-temperature fluxless soldering ceramics and metal using diffusion-hardening solders based on gallium. The components of the solder are in the following ratio, wt %: gallium 32-45; copper-silver alloy 8-12; aluminium oxide 0.5-3; zinc 3-7; brass - the rest. The brass contains zinc in amount of up to 37 wt %, with copper making up the remaining amount.

EFFECT: solder increases strength of the soldered joint.

2 cl, 2 tbl