HENAN ZG INDUSTRIAL PRODUCTS CO.,LTD
HENAN ZG INDUSTRIAL PRODUCTS CO.,LTD
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high quality clear quartz substrate , including fused silica wafer and fused quartz wafer in UV grade , optical grade an
We provides high quality clear quartz substrate , including fused silica wafer and fused quartz wafer in UV grade , optical grade and semiconductor grade . Quartz wafer have many unique features such as high working temperature , high anti corrosion , good thermal conductivity , high optical transmittance and low dielectric loss , these special features make quartz wafer suitable for semiconductor , photomask , microwave filter , optical lense , and optical fiber application . Quartz wafer can be fabricated in round or square shape , with a SEMI flat or without flat , one side polished or two sides polished , size from 1" to 12 " , thickness range from 0.4 , 0.5 , 0.7 , 1.1 to 3 mm , ultrasonic cleaning and cleanroom compatible wafer cassette package are also available. Additionally , we offer custom specifications designed to your unique needs including , dimension , SEMI. standard flats , surface roughness , edge profile , thickness , flatness , surface quality , cleanliness package method . We have amorphous quartz wafer in stock and can machine to your specification with high precision surface finish . Please contact us for further product information .
| High working temperature | High optical transmission |
| High stability | High anti corrosion |
| Good thermal conductivity | low dielectric loss |
| Stable dielectric constant | Superior mechanical properties |
| Fused silica wafer ( Synthetic silica ) |
Fused quartz wafer ( Natual silica ) |
|---|---|
| High OH content >1200 | Low OH content > 150 |
| Higher transmission in the UV range | Lower transmission in the UV range |
| Free bubbles and inclusions | Contain bubbles and inclusions |
| Very low fluorescence | High fluorescence |
| Impurity 5 ppm | Impurity 20 ~ 40 ppm |
| Chemical formula | SiO2 |
| Mechanical Properties | |
| Density | 2.2 g / cm3 |
| Poisson's ratio | 0.14 ~ 0.17 |
| Young's modulus | 72000 Mpa |
| Rigidity modulus | 31000 Mpa |
| Moh's hardness | 5.5 ~ 6.5 |
| Thermal Properties | |
| Transformation point | 1120 °C |
| Softening point | 1680 °C |
| Specific heat ( 20 ~ 350 °C ) | 670 J / kg °C |
| Thermal conductivity ( 20 °C ) | 1.4 W / m °C |
| Thermal expansion coefficient | 5.5×10 -7 cm / cm °C |
| Electrical Properties | |
| Resistivity | 7E7 ohm-cm |
| Insulating strength | 250 ~ 400 Kv / cm |
| Dielectric constant e | 3.7~ 3.9 |
| Dielectric absorption coefficient. | < 4E4 |
| Dielectric waste coefficient. | < 1E4 |
| Optical Properties | |
| Refractive index ( @ 589 nm ) | Nd =1.4584 |