▎ 摘　　要

NOVELTY - Graphene modified low temperature solder composition comprises 0.1-0.5 wt.% graphene, and solder alloy (balance). USE - Used as a graphene modified low temperature solder. ADVANTAGE - The solder has good toughness and strength, improved tensile strength, ductility and welding point toughness properties. The method improves dispersibility of solder material, and solves the problem of graphene floating. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparation of the graphene modified low temperature solder comprising (1) placing graphene in absolute ethanol, ultrasonically treating for 1-2 hours, ball milling for 10-50 minutes, taking out, drying and grinding graphene, and (2) finishing grinding, adding to molten solder alloy, stirring under protection of nitrogen for 10-30 minutes, cooling, and shaping to obtain product.