| 摘要 |
1290506 Welding by pressure BROWN BOVERI & CO Ltd 23 Oct 1969 [25 Oct 1968] 52080/69 Heading B3R A heat sink 1 for electrical components comprises two parts 5, 2 frictionally welded together, the first part 5 being of a higher thermal conductivity, such as copper, than the other part 2, such as aluminium or aluminium alloy, which has an extended surface area and a larger overall dimension than the first part to dissipate heat transmitted to it from the first part. The welding may take place on a friction welding machine with a flywheel. In practice a semiconductor component is sandwiched between a pair of heat sinks. |
