Sapphire Tube sapphire rods speacial shape high-pressure KY and EFG

Short Description:

Sapphire glass tubes and sapphire glass rods are characterized by high mechanical, chemical and thermal resistance and additionally offer high optical transmission from 200nm. We can offer sapphire glass tubes and rods for a wide range of applications.

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Description

Sapphire Rods are used in a wide range of applications. A sapphire rod can be made with all surfaces polished for optical and wear applications or with all surfaces fine grind (un-polished) to serve as an insulator.

Technology

During the process of pulling sapphire tubes from a melt with the aid of a seed, the longitudinal temperature gradient in the zone between the solidified front and the region of pulling where the temperature is between 1850 and 1900 deg. C is maintained not in excess of 30 deg. C/cm. The tube so grown is annealed at a temperature between 1950 and 2000 deg. C by increasing the temperature at a rate of 30 to 40 deg. C/min and keeping the tube at said temperature during a period between 3 and 4 hours. After that the tube is cooled down to room temperature at a rate of 30-40 deg. C/min.

Semiconductor Processing applications:

(HPD CVD, PECVD, Dry Etch, Wet Etch)

Plasma applicator tube

Process gas injector nozzles

Endpoint detector

Excimer Corona Tubes

Plasma containment tubes

Plasma tube sealing machine is a device used to encapsulate electronic components. Its principle is to use the high temperature and high pressure of plasma to melt the packaging material and encapsulate it on the component. The main components of plasma tube sealing machine include plasma generator, tube sealing chamber, vacuum system, control system, etc

Thermocouple protection sheath (Thermowell): Thermocouple is a commonly used temperature measuring element in temperature measuring instrument, it directly measures the temperature, and converts the temperature signal into thermoelectric electromotive force signal, through the electrical instrument (secondary instrument) into the temperature of the measured medium

Water treatment/cleaning

Sapphire Tube Properties (Theoretical)

Compound Formula	Al2O3
Molecular Weight	101.96
Appearance	Translucent tubes
Melting Point	2050 °C (3720 °F)
Boiling Point	2,977° C (5,391° F)
Density	4.0 g/cm3
Morphology	Trigonal (hex), R3c
Solubility in H2O	98 x 10-6 g/100g
Refractive Index	1.8
Electrical Resistivity	17 10x Ω-m
Poisson's Ratio	0.28
Specific Heat	760 J Kg-1 K-1 (293K)
Tensile Strength	1390 MPa (Ultimate)
Thermal Conductivity	30 W/m-K
Thermal Expansion	5.3 µm/m-K
Young's Modulus	450 GPa
Exact Mass	101.948 g/mol
Monoisotopic Mass	101.94782 Da