Metal packing, low temperature connect lead-free solder and connection structural bodies

Metal packing, low temperature connect lead-free solder and connection structural bodies

  • CN 102,317,031 B
  • Filed: 02/24/2010
  • Issued: 09/16/2015
  • Est. Priority Date: 02/25/2009
  • Status: Active Grant
First Claim
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1. a metal packing, it is the metal packing be made up of the mixture of the 1st metallic particles and the 2nd metallic particles,Described 1st metallic particles is containing Cu as the element existed with the highest mass ratio and main component and the Cu alloying pellet containing In and Sn,Described 2nd metallic particles is selected from by the Bi of 40 ~ 70 quality % and 30 ~ 60 quality % the Bi alloying pellet that more than a kind metal in the group be made up of Ag, Cu, In and Sn forms, and,Relative to the 1st metallic particles described in 100 mass parts, the amount of described 2nd metallic particles is the scope of 40 ~ 300 mass parts,Wherein, described 1st metallic particles is made up of the Ag of 5 ~ 15 quality %, Bi, the Cu of 49 ~ 81 quality % of 2 ~ 8 quality %, the Sn of the In of 2 ~ 8 quality % and 10 ~ 20 quality %,Measure in DSC at means of differential scanning calorimetry, described 1st metallic particles has at least 1 exothermic peak observed in the scope of 230 ~ 300 DEG C, and at least 1 endothermic peak observed in the scope of 480 ~ 530 DEG C.

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