06-03-2014 дата публикации
Номер: US20140063762A1
A bonding wire according to the invention contains a core having a surface, in which the core contains silver as a main component and at least one element selected from gold, palladium, platinum, rhodium, ruthenium, nickel, copper, and iridium. The wire exhibits at least one of the following properties: 1. A bonding wire comprising a core having a surface , wherein the core comprises silver as a main component and at least one element selected from the group consisting of gold , palladium , platinum , rhodium , ruthenium , nickel , copper and iridium , wherein the bonding wire exhibits at least one of the following properties:an average size of crystal grains of the core is between 0.8 μm and 3 μm,an amount of crystal grains having an orientation in a <001> direction in a cross section of the wire is in a range of 10-20%,an amount of crystal grains having an orientation in a <111> direction in a cross section of the wire is in a range of 5-15%, anda total amount of crystal grains having an orientation in the <001> direction and of crystal grains having an orientation in the <111> direction in a cross section of the wire is in a range of 15-40%.2. The bonding wire according to claim 1 , wherein the core comprises silver as a main component and at least one element selected from the group consisting of gold claim 1 , palladium claim 1 , and platinum.3. The bonding wire according to claim 1 , wherein the core comprises 80-95 wt. % silver claim 1 , 5-12 wt. % gold claim 1 , 1.5-5 wt. % palladium and up to 0.01 wt. % unavoidable impurities.4. The bonding wire according to claim 1 , wherein the core comprises 90-99.7 wt. % silver claim 1 , 0.3-10 wt. % gold and up to 0.01 wt. % unavoidable impurities.5. The bonding wire according to claim 1 , wherein the core comprises 90-99.7 wt. % silver claim 1 , 0.3-10 wt. % palladium and up to 0.01 wt. % unavoidable impurities.6. The bonding wire according to claim 1 , wherein the core comprises 80-99 wt. % silver claim 1 , 0-10 wt. ...
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