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In heat transfer, the thermal conductivity of a substance, k, is an intensive property that indicates its ability to conduct heat. For most materials, the amount of heat conducted varies (usually non-linearly) with temperature. [1] Thermal conductivity is often measured with laser flash analysis. Alternative measurements are also established.
Aluminium oxide is a representative of bioinert ceramics. [33] Due to its excellent biocompatibility, high strength, and wear resistance, alumina ceramics are used in medical applications to manufacture artificial bones and joints. [34]
AlN has high thermal conductivity, high-quality MOCVD-grown AlN single crystal has an intrinsic thermal conductivity of 321 W/(m·K), consistent with a first-principle calculation. [5] For an electrically insulating ceramic, it is 70–210 W/(m·K) for polycrystalline material, and as high as 285 W/(m·K) for single crystals). [11]
Arctic Alumina is a ceramics-based polysynthetic thermal compound using aluminum oxide as a thermal transfer medium. It is a lower-cost product than Arctic Silver 5. [1] The 2009 BenchmarkReviews.com 80-product review rated Alumina in the Good class, with a B+ "enthusiast grade"; [2] it cooled a test system 10% better than the last-place finisher.
As quoted from various sources in an online version of: David R. Lide (ed), CRC Handbook of Chemistry and Physics, 84th Edition.CRC Press. Boca Raton, Florida, 2003; Section 12, Properties of Solids; Thermal and Physical Properties of Pure Metals / Thermal Conductivity of Crystalline Dielectrics / Thermal Conductivity of Metals and Semiconductors as a Function of Temperature
This ensures good thermal cycling performances (up to 50,000 cycles). [3] The DBC substrates also have excellent electrical insulation and good heat spreading characteristics. [4] Ceramic material used in DBC include: Alumina (Al 2 O 3), commonly used because of its low cost. It is however not a really good thermal conductor (24-28 W/mK) and is ...
AlSiC, pronounced "alsick", [1] is a metal matrix composite consisting of aluminium matrix with silicon carbide particles. It has high thermal conductivity (180–200 W/m K), and its thermal expansion can be adjusted to match other materials, e.g. silicon and gallium arsenide chips and various ceramics.
The thermal conductivity of a material is a measure of its ability to conduct heat.It is commonly denoted by , , or and is measured in W·m −1 ·K −1.. Heat transfer occurs at a lower rate in materials of low thermal conductivity than in materials of high thermal conductivity.
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