Sapphire Thermal Conductivity Vs Temperature
Excellent optical characteristics uv to ir.
Sapphire thermal conductivity vs temperature. 4 5 10 6 k 1 and 1000 c. Thermal conductivity w m x k at 300k. Thermal coefficient of linear expansion k 1 at 323k. Sapphire is a very useful optical window material for use in the uv visible and near infra red.
Temperature coefficient of refractive index. Sapphire ir transmission data table 2019. 23 0 w m c at 77 c. Sapphire is used for its extreme toughness and strength.
High operating temperature 1800 c chemically inert. It is also used as an insulation material and microwave window. High wear and scratch resistance. 40 w m k 298 k.
Open source for use with acknowledgement. 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. Guild optics is a manufacturer of sapphire substrates. 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.
Applications applications of sapphire include. The advantages of sapphire include. It turns out that thermal conductivity is directional just like refractive index in all but isotropic isometric or amorphous materials. Single crystal sapphire is used as a material for substrates in super high frequency regions.
The properties of sapphire. 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. 6 66 x 10 6 parallel to optical axis 5 x 10 6 perpendicular to optical axis. Wood generally conducts better along the grain than across it.
Learn more about the thermal conductivity of sapphire substrates sapphire wafers sapphire properties and crystal structure from valley design. 13 10 6 c 0 57 µm 20 c. 25 8 w m c at 70 c. Resistivity ohm x cm.
Mechanical chemical thermal and more all listed out in plain english. Sapphire al 2 o 3 data sheet sapphire al 2 o 3 sds sapphire al 2 o 3 rough guide. Good thermal conductivity and high heat resistance.