A heat sink is a term for a component or assembly that transfers heat generated within a solid material to a fluid medium, such as air or a liquid. Examples of heat sink is the heat exchangers used in refrigeration and air conditioning systems and the radiator (also a heat exchanger) in a car. Heat sink also helps to cool electronic and optoelectronic devices, such as higher-power lasers and light emitting diodes (LEDs).
What is CuW?
CuW, also called copper tungsten, tungsten copper and W-Cu, is a powdered metal product consisting of a mixture of copper and tungsten (a.k.a. wolfram). It is a refractory metal used for many purposes such as heat sink and thermal management applications. CuW is used for EDM electrodes.
Tungsten Copper high performance composites are fabricated from carefully controlled porous tungsten that is vacuum infiltrated with molten copper. This results in a WCu composite that has high conductivity and a matched low thermal expansion for heat sinks. Tungsten copper heat sink has been widely in use many fields, it is the great choice for the computer CPU. They are composites of tungsten and copper. By adjusting the content of tungsten, we can have its coefficient of thermal expansion (CTE) designed to match those of materials such as ceramics (Al2O3, BeO), semiconductors (Si), and metals (Kovar), etc.
We use high quality pure raw materials, molding, high temperature sintering and infiltration, got an excellent performance of WCu electronic packaging materials and heat sink material. Applies to high-power device package of materials, such as substrate, under the electrode; high-performance lead frame; military and civilian thermal control devices such as thermal control panels and radiators. If you're familiar with traditional CPU heat sink designs, they usually feature a metal heat sink and a fan working in concert to siphon off the heat generated by CPU, graphics chips, and other computer parts that draw, and therefore emit, energy. The problem with that design is what's called the boundary layer of air that hugs the heat sink. Chinatungsten copper tungsten heat sink is the perfect material for making the CPU heat sink.
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