Sapphire Thermal Conductivity Vs Temperature

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Sapphire thermal conductivity vs temperature.

It is also used as an insulation material and microwave window. Thermal conductivity w m x k at 300k. The advantages of sapphire include. Sapphire is a very useful optical window material for use in the uv visible and near infra red.

High wear and scratch resistance. Thermal coefficient of linear expansion k 1 at 323k. 4 5 10 6 k 1 and 1000 c. Sapphire is a notable example of variable thermal conductivity based on orientation and temperature with 35 w m k along the c axis and 32 w m k along the a axis.

Sapphire is used for its extreme toughness and strength. Temperature coefficient of refractive index. 40 w m k 298 k. The properties of sapphire.

23 0 w m c at 77 c. Thermal conductivity on the other hand is a ratio of the flow of heat through a given thickness of material to the temperature difference across this thickness. Sapphire al 2 o 3 data sheet sapphire al 2 o 3 sds sapphire al 2 o 3 rough guide. Excellent thermal conductivity at low temperatures allows single crystal sapphire as a transparent material to be used in many diverse fields requiring thermal conduction and heat radiation.

Single crystal sapphire is used as a material for substrates in super high frequency regions. Sapphire ir transmission data table 2019. 13 10 6 c 0 57 µm 20 c. Single crystal single crystal sapphire is used for various kinds of vacuum equipment windows in excellent thermal conductivity at low temperatures allows single crystal sapphire as a.

Applications applications of sapphire include. Good thermal conductivity and high heat resistance. 25 8 w m c at 70 c. Excellent optical characteristics uv to ir.

High operating temperature 1800 c chemically inert. 23 1 parallel to optical axis 25 2 perpendicular to optical axis. Resistivity ohm x cm. Learn more about the thermal conductivity of sapphire substrates sapphire wafers sapphire properties and crystal structure from valley design.

It turns out that thermal conductivity is directional just like refractive index in all but isotropic isometric or amorphous materials. Guild optics is a manufacturer of sapphire substrates. Mechanical chemical thermal and more all listed out in plain english.