Application
Semiconductor opaque quartz ingot is used as heat insulation material in semiconductor wafer manufacturing process.
Characteristics
Semiconductor opaque quartz ingot features high purity, good heat insulation and high temperature resistance, etc.
Code
PQ872E , PQ872EH
Specifications
Dimension range（MAX:OD*H）
450±3*500±3mm
Physicochemical Properties
1) Trace Elements (Unit ：ppm)
Code | Criteria | Al | Ca | Cr | Cu | Fe | K | Li | Mg | Mn | Na | Ti | Zr |
PQ872E | Typical | 13 | 0.5 | <0.05 | <0.05 | 0.1 | 0.1 | 0.3 | 0.05 | 0.05 | 0.1 | 1.3 | 1 |
Maximum | 19 | 1 | 0.1 | 0.1 | 0.5 | 1 | 1 | 0.2 | 0.2 | 1 | 2 | 2 | |
PQ872EH | Typical | 0.09 | 0.02 | <0.01 | <0.01 | 0.02 | 0.02 | <0.01 | 0.02 | <0.01 | 0.02 | 0.05 | <0.01 |
2) Physical Properties
Item | Index Value |
Density（g/cm3） | 2.0 |
Heat Conductivity（w/m·k，1000℃） | 2.28 |
Bore Diameter(um) | <50 |
Coefficient of Linear Expansion（℃-1，0-900℃） | 0.47×10-6 |
Annealing point（℃） | 1080 |
Maximum Working Temperature（℃） | Continuous 1100 |
Maximum Working Temperature（℃） | Short-term 1300 |
3) Optical Characteristics
Our Main Product
Main Application
Company Advantage
● Purity of SiO2 can reach to 99.995-99.999%;
● World leading production process and equipment;
● Customer-oriented thoughts;
● Applied into lighting, solar, optics, optical fiber, semiconductor and etc;
● Cutting edge of melting technology;
● World famous brand;
CNAS Certified Laboratory
Production Main Facilities
SiO2≥99.5%
The crucible is manufactured from high-purity fused quartz. Mainly in square and cylindrical shape.
Production process
Preparation of slurry-pouring molding-blank drying-sintering-cutting and grinding processing-finished products
Features
1. Fine structure, low thermal conductivity, small thermal expansion coefficient, high dimensional accuracy of finished products, no deformation at high temperature, good thermal shock stability, good electrical properties, and good chemical resistance.
2. Mainly used in polysilicon production and non-ferrous metal smelting industry.
3. Widely used in glass, solar energy, non-ferrous metals, metallurgy, chemical industry, petroleum, medicine, food industry, steel, environmental engineering, biological engineering, aerospace and other fields.
Material Data
1. Working temperature:1100℃
2. The max. temperature:1650℃
Customers Visiting & Exhibition Moment
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