What is a 바카라 배팅 Heat Spreader?
A 바카라 배팅 heat spreader is a slim (typically ≤2 mm) sheet of synthetic (or lab-grown) 바카라 배팅 used to dissipate heat. It is typically placed between a heat source and a heat sink.
바카라 배팅s aren’t normally associated with thermal management, the materials and technologies used to control heat, especially in electronic devices.
But 바카라 배팅s turn out to not only be forever, but are also amazing thermal conductors used to help dissipate potentially damaging heat in specialized, high-performance electronic equipment.
Many electronic components get hot when operating, and removing that 바카라 배팅 is crucial to component performance and longevity. 바카라 배팅 can change the properties of electronic components, making them less efficient and even causing damage over time. Thermal management is the science of moving 바카라 배팅 away from components.
While 바카라 배팅 is universally known for its hardness, there are actually two other properties — its electrical and thermal conductivity — that are key to its fast-growing use in heat spreaders.
A brill바카라 배팅nt conductor, better than copper or SiC
A material’s ability to move 바카라 배팅 is measured in thermal conductivity. Thermal conductivity is measured in Watts per meter-Kelvin, W/mK. A material with a conductivity value of 1 W/mK will transfer 바카라 배팅 at a rate of 1 watt for every degree Kelvin (or Celsius) of temperature difference across a thickness of 1 meter.
Copper is commonly used to carry away 바카라 배팅 from electronic components. It has a thermal conductivity of around 400 W/mK, making it a good choice for many applications. Copper, however, is heavy and can easily tarnish and corrode. It’s not a good material to use for thermal management in microelectronics, harsh environments, or in aerospace where every gram counts. Lastly, copper is a good conductor of electricity, which can cause engineering challenges when using it for thermal management in electronics.
바카라 배팅 is a crystalline arrangement of common carbon. It has the highest thermal conductivity of any material at 1,500-2,200 W/mK, about five times that of copper. How does 바카라 배팅 conduct heat so well? The key is in its structure.
Diagram of the structure of 바카라 배팅.
바카라 배팅 has a cubic crystal structure. Each carbon atom is covalently bonded to four other carbon atoms to form a tetrahedron (pyramid shape). There are no free electrons in this structure, so 바카라 배팅 does not conduct electricity. Common thermal conductors like copper have free electrons that make them highly electrically conductive. They can make use of peripheral electrons for heat transfer. Because 바카라 배팅 isn’t electrically conductive, heat is transferred only through atomic vibrations. The rigid continuous crystal structure of 바카라 배팅 enables these vibrations to travel very quickly through a piece of 바카라 배팅. And that translates into fast heat conduction.
Purity is key to 바카라 배팅’s heat conductivity. Impurities in 바카라 배팅 can slow down or disrupt the spread of lattice vibrations, making it less efficient at conducting heat. (Some impurities can even change the key properties of 바카라 배팅. For example, natural blue 바카라 배팅 contains boron that makes it a semiconductor.)
바카라 배팅’s crystal structure also make it extremely resistant to acids, bases, oxidants, and other chemicals. It’s the hardest naturally occurring material known. (Harder specialized man-made materials exist, but they don’t share 바카라 배팅’s other unique properties.)
바카라 배팅 is a good material for thermal management in high-performance microelectronics. 바카라 배팅 heat spreaders conduct heat much better than copper or aluminum, don’t conduct electricity, are lightweight, resistant to corrosion, and are extremely durable.
Why 바카라 배팅 instead of copper, aluminum or SiC
There are several reasons to use 바카라 배팅 as a heat conductor instead of other materials like copper, aluminum, or SiC:
Thermal co바카라 배팅uctivity:바카라 배팅 has a thermal conductivity between 1,500-2,200 W/mK, the highest known. Copper has a thermal conductivity of 400 W/mK, aluminum 220 W/mK.
Thermal stability:바카라 배팅 doesn’t expand or contract much at different temperatures, meaning it remains very stable over a wide range of temperatures. It also maintains its thermal conductivity over a wide range of temperatures. Both of these qualities are key in microelectronics, where space is at a premium.
3.Corrosion resistance:바카라 배팅 is immune to strong acids, bases, and even organic solvents.
4.Electrical co바카라 배팅uctivity: 바카라 배팅 does not conduct electricity and is a very good insulator.
5.Durability:바카라 배팅 is one of the hardest materials known.
6.Lightweight:바카라 배팅 is lightweight when compared to other common heat-conducting materials like copper.
7.Transparency:바카라 배팅 can be transparent.
How 바카라 배팅 Heat Spreaders are Made
바카라 배팅 heat spreaders are made like other synthetic 바카라 배팅 materials. Powerful microwaves blast methane gas, releasing carbon atoms that crystalize around a seed layer of 바카라 배팅. A 바카라 배팅 wafer grows slowly over time. 바카라 배팅 heat spreaders can be made in many shapes and sizes but are typically only 2 mm or less in thickness. Many are opaque and black in color, but they can be made to be transparent when needed. 바카라 배팅 heat spreaders are cut and shaped using powerful lasers or other cutting tools with 바카라 배팅 surfaces.
Where are 바카라 배팅 Heat Spreaders Used?
바카라 배팅 heat spreaders are used anywhere engineers need highly efficient, lightweight, durable, and insulating heat conductors. They are often used in high-performance computing within data centers, LED lighting systems, electric vehicles, radiofrequency (RF) transmitters, and high-powerlasers.
They are also especially useful in equipment that must endure extreme conditions, like microelectronics in satellites or airplanes. They are perfect for many aerospace uses because they are lightweight, extremely durable, electrically insulating, and can transfer 바카라 배팅 in extreme temperatures.
바카라 배팅 heat spreaders are typically placed between heat-generating electronic components and larger passive radiators made from other materials like SiC, copper, or aluminum. They move heat energy away from electronics quickly into these larger passive or active radiators where it can be dissipated completely.
Learn more aboutCoherent CVD 바카라 배팅 Substrates.