Flame Opaque Quartz


Introduction

Thanks to the big total surface area of bubbles per unit volume, it can increase the reflection of heat rays in the quartz glass, which improves its ability to intercept heat rays. It is wildly used in heat insulation parts of various quartz devices such as semiconductors and solar energy.

FLHO321H - 198-298.jpg

FLHO321H

FLHO321N - 198-298.jpg

FLHO321N


Chemical property

Solution: HF 10wt%,25℃,Etching time:3 hours

Solution: KOH 10wt%,20℃,Etching time:72 hours

     Fire polished surface (μm/min)

 0.07   

   Ground surface(μm/min)

 0.1   

     Fire polished surface (μm/min)

 0.002   

    Ground surface (μm/min)

 0.005   

  

  Chemical purity


FLHO321H Impurity Typical Value   (ppm)

Al

8.00

B

0.05

Ca

0.60

Co

<0.05

Cu

<0.01

Fe

0.15

K

0.10

Li

0.10

Mg

<0.05

Mn

<0.05

Na

0.10

Ni

<0.05

Ti

1.33

OH

~170



FLHO321N Impurity Typical Value   (ppm)


Al

12.00

B

0.08

Ca

0.30

Co

<0.02

Cu

<0.01

Fe

0.10

K

0.20

Li

0.40

Mg

<0.05

Mn

<0.05

Na

0.40

Ni

<0.03

Ti

1.2

OH



Transmission

FLHO321H 透过率 198-298.jpg

Transmission of FLHO321H

FLHO321N 透过率 198-298.jpg

Transmission of FLHO321N

FLHO321H 反射率 198-298.jpg

Reflectivity of FLHO321H

FLHO321N 反射率 198-298.jpg

Reflectivity of FLHO321N


Physical Property


       Project

FLHO321N

FLHO321H

Mechanical Properties

Density(g/cm³)

Young’s Modulus(GPa)

Vickers Hardness(MPa)

2.05

74

6-7

2.05

74

6-7

Electrical Properties

Dielectric Constant(10GHz)

Loss Factor(500MHz)

2.05

6-7

2.05

6-7

Thermal Properties

Strain Point(℃)

Annealing point(℃)

Softening point(℃)

Thermal Conductivity(20℃)(W/m.k)

Specific Heat(20℃)(J/kg.k)

Expansion Coefficient(x10-7 /k) α:30℃~600℃

Diffusivity(20℃)(×10 -7m2 /s)

Viscosity(1200℃)

1.24

749

8.4

11.72

1670

1150

1070

6.4

1.24

749

8.4

11.72

1670

1150

1070

6.4

  Flame Opaque Quartz 
FLHO321H FLHO321N
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