Quartz (SiO₂) Applied to Ceramic Product And Components | Over 30 Years Advanced Ceramic Parts & Components Manufacturer

Quartz (SiO₂) Applied to Ceramic Product

Quartz is a kind of glass like its name but what makes it different is that ordinary glass consists of many components, while quartz only consists of SiO₂. Because quartz contains very little amount of metallic impurities, only up to 10ppm (one hundred thousandth), the minimum state is usually only 10ppb (one over a billion) or less and because of its high purity, the quartz itself presents characteristics and advantages that other glass can not present.

Quartz (SiO₂) material features extremely low thermal expansion coefficient, high temperature resistance, high abrasion resistance, good chemical stability, electrical insulation, low and stable retardation, near ultraviolet (infrared) ray visible light transmittance, high mechanical properties and so on.

Therefore, high-purity quartz materials are widely used in modern electronic technology, semiconductor, telecommunications, electric light source, solar energy, national defense high-precision measuring instruments, laboratory physics and chemistry instruments, nuclear energy, nano-industries.

Semiconductor Applications
In the manufacturing process of semiconductor, the main quartz materials are used for quartz tube furnace, quartz boat, quartz ring, quartz tank, windows, process equipment and other related quartz components.
Quartz processing include: surface grinding, polishing, cylinder cutting, cutting, groove processing, curve processing, special-shaped processing, ultra-fine hole drilling, film coating.

Characteristics Of Quartz

1. Easy Light Penetration
The easy light penetration of quartz not only applies to visible light. The wavelength light ranges from ultraviolet to infrared light also present good penetration.
2. High Purity
As it's only composed of SiO₂, it contains only trace amounts of metal impurities.
3. Heat Resistance
With softening point of about 1700°C, it can be used at a high temperature of 1000°C. The thermal expansion coefficient is small, which can withstand dramatic temperature changes.
4. Drug Erosion Resistance
It features quite stable chemical properties with excellent chemical resistance.

Quartz Material Characteristics Table

1. Material impurity content analysis (SIO₂ content: ≥ 99.995%)

Fe	Mg	Mn	K	Li	Co	Ni	Cu	Na	B	Ti	Ca	Al
1.2	0.4	0.1	2.0	0.5	< 0.02	0.03	0.57	2.3	0.8	0.1	0.8	16

2. Optical Test: Refractive index and dispersion values (na = 1.45845)

Category	20°C	UV	IR	Visible light
Na value	1.4586 ± 4 x 10^-4	1.5341 - 1.4942	1.4251 - 1.47451	1.4698 - 1.45413
Mean dispersion and dispersion coefficient / Nf-Nc=0.00674 ±3 x 10^-4 / Dispersion coefficient Y= 680

3. Thermal Test

Thermal Expansion Coefficient	Temperature °C	100	300		500	700	900		1100
Thermal Expansion Coefficient	Thermal Expansion Coefficient x 10^-7	5.11	5.92		5.65	5.73	5.52		5.48
Heat Conduction W/m°C	Temperature °C	20	100		200	300	400		950
Heat Conduction W/m°C	Heat Conduction Coefficient	1.38	1.47		1.55	1.67	1.84		2.68
Thermal Energy Rate J/Kg°C	Temperature °C	20		100		500		900
Thermal Energy Rate J/Kg°C	Thermal Energy Rate	690		772		964		1052

4. Electricity Test

Electricity Performance	Dielectric Constant (E)	20°C	23°C	28°C
	Dielectric Constant (E)	3.7	3.77	3.81
	(Tgδ)	1 kHz	1-1000 MHz	3 x 10^-4MHz
	(Tgδ)	0.0005	0.0001	0.0004
	Resistivity Factor (Ω cm)	20°C	400°C	800°C	1200°C
	Resistivity Factor (Ω cm)	10¹⁶	10¹⁰	6.3 x 10⁶	1.3 x 10⁵

5. Reaction of Material and Oxide

AIO₃	MgO	CaO	ZnO	Fe-Oxide	CuO	BaO	Basic-Oxide	PbO
> 1200°C	> 950°C	> 1000°C	> 800°C	> 950°C	> 950°C	> 900°C	> 800°C	Melting state

6. Mechanical Properties

Density	2.21 g/cm³	Compression strength	6000N/mm² 160000psi	Extension strength	50 N/mm²	Torque force	30 N/mm²
Mohs Hardness	5.5 - 6.5 N/mm²	Torque coefficient	3.1 x 10⁴ N/mm²	Bending withstanding	67 N/mm²	Sound velocity	5720m x s