Sapphire Thermal Conductivity Vs Temperature

Excellent optical characteristics uv to ir.

Sapphire thermal conductivity vs temperature.

Sapphire is used for its extreme toughness and strength. 25 8 w m c at 70 c. Single crystal sapphire is used as a material for substrates in super high frequency regions. It is also used as an insulation material and microwave window.

Open source for use with acknowledgement. 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. 40 w m k 298 k. The properties of sapphire.

Sapphire al 2 o 3 data sheet sapphire al 2 o 3 sds sapphire al 2 o 3 rough guide. Applications applications of sapphire include. Learn more about the thermal conductivity of sapphire substrates sapphire wafers sapphire properties and crystal structure from valley design. 23 0 w m c at 77 c.

23 1 parallel to optical axis 25 2 perpendicular to optical axis. High operating temperature 1800 c chemically inert. 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. Thermal conductivity w m x k at 300k.

Wood generally conducts better along the grain than across it. Resistivity ohm x cm. Thermal coefficient of linear expansion k 1 at 323k. Mechanical chemical thermal and more all listed out in plain english.

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. Guild optics is a manufacturer of sapphire substrates. Temperature coefficient of refractive index. Thermal electrical and optical ir transmission vs wavelength 500 c 20 c 1000 c 0 0 2 3 4 5 6 10 20 30 40 50 60 70 80 90 100 wavelengths microns.

6 66 x 10 6 parallel to optical axis 5 x 10 6 perpendicular to optical axis. Good thermal conductivity and high heat resistance. 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. It turns out that thermal conductivity is directional just like refractive index in all but isotropic isometric or amorphous materials.

Sapphire ir transmission data table 2019. High wear and scratch resistance. 4 5 10 6 k 1 and 1000 c.