石英结晶 Quartz Crystalline (SiO2)

Syngony

Hexagonal

Symmetry Class

P3221

Lattice Constants

a = 4.9138 Å

c = 5.4052 Å

Refractive Index no at n_0.436

1.5538

Refractive Index at ne at n_0.436

1.5632

Thermal Coefficient of Refractive Index at 340 nm for +20/+100 ℃

no

-5.01 x 10^-6

ne

-3.93 x 10^-6

Transmission Range, microns

0.15 - 3.3

Thermal Linear Expansion, ℃^-1 for 0/+20 ℃

13.24 x 10^-6

Thermal Conductivity, W/(m * ℃) at 25 ℃

no

6.82

ne

11.43

Specific Heat Capacity, J/(kg * ℃)

0.741 x 10³

Melting Point, ℃

1470

Density, g/cm³ at 20 ℃

2.649

Mohs Hardness

7

Vickers Microhardness, Pa

981 x 10⁷

Young Modulus (E), Pa

no

8.7 x 10¹⁰

ne

10.5 x 10¹⁰

Molecular Weight

60.06

Solubility

in water, gram/100cm³

insoluble

Wavelength, Microns

Refractive Index no

Refractive Index ne

0.2001

1.6493

1.6623

0.2503

1.6003

1.6114

0.3034

1.5770

1.5872

0.4047

1.5572

1.5667

0.5086

1.5482

1.5575

0.6438

1.5423

1.5513

1.0000

1.5350

1.5438

1.2000

1.5323

1.5410

1.4000

1.5297

1.5383

1.6000

1.5270

1.5355

1.8000

1.5241

1.5324

2.5000

1.5116

1.5195

3.0000

1.4996

1.5070