Rare earth tin-based alloy for hot-dip coating of copper alloy and preparation method of rare earth and tin based alloy
A tin-based alloy, copper alloy technology, applied in hot-dip plating process, metal material coating process, coating and other directions, can solve the problems of long residence time at room temperature, short circuit of electronic connectors or integrated circuit boards, etc., to achieve wetting Good properties, improved spreading ability, and the effect of solid solution strengthening alloy hardness
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[0018] Example 1
[0019] A rare earth tin-based alloy for hot-dip plating of Cu-Ni series alloy strips, consisting of the following elements in mass fraction: 0.2% Cu, 0.05% Y, 0.005% P, the balance is Sn and unavoidable impurity elements ;
[0020] The preparation method of the rare earth tin-based alloy includes the following steps:
[0021] (1) Preparation of master alloy: Prepare master alloy SnCu7, master alloy SnY10 and master alloy CuP1.5 respectively by the following methods: weigh the ingredients according to the mass fraction of each element of the master alloy (take SnCu7 as an example, according to the mass ratio of 93: 7 Weigh Sn and Cu), put them in a water-cooled copper sleeve vacuum non-consumable smelting furnace, evacuate to a pressure of 0.007Pa in the furnace, then fill with argon gas to 0.2-0.3MPa, arc smelt until the ingredients are completely melted, and turn off the arc The melt is cooled to complete solidification, the solidified melt is turned over, and t...
Example Embodiment
[0024] Example 2
[0025] A Cu-Ni series copper alloy strip hot-dip rare earth tin-based alloy, composed of the following elements in mass fraction: 0.6% Cu, 0.125% Y, 0.0075% P, the balance is Sn and inevitable impurities element;
[0026] The preparation method is the same as in Example 1; the performance indexes of the prepared rare earth tin-based alloy are: standard electrode potential 0.3381V, melting point 188.6°C, tensile strength 75.5MPa, and elongation rate 30.7%.
Example Embodiment
[0027] Example 3
[0028] A rare earth tin-based alloy for hot-dip plating of Cu-Ni series alloy strips. It is composed of the following elements in mass fraction: 1.0% Cu, 0.2% Y, 0.01% P, the balance is Sn and inevitable impurity elements ;
[0029] The preparation method is the same as in Example 1; the performance indexes of the prepared rare earth tin-based alloy are: standard electrode potential 0.3346V, melting point 193.1°C, tensile strength 89.4MPa, and elongation rate 21.3%.
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