Sapphire (Al2O3)

Wir sind führender Hersteller und Lieferant von Forschungsmaterialien

Crystallographic

Syngony Tetragon
Symmetry Class 3m
Lattice Constants a = 4.758 Å
c = 12.991 Å
Cleavability (1011), (1120) imperfect
 

Optical

Refractive Index at ne 1.7771
Refractive Index at nF' - nC' 0.0107
Thermal Coefficient of Refractive Index at 3.39 microns for ±60 °C bo = (0.88 ... 1.28) x 10-5
be = (0.99 ... 1.39) x 10-5
Spectral Range, microns 0.17 - 5.0
 

Thermal

Thermal Linear Expansion, °C-1
for ±60 °C
 
^ to c-axis (3.24 ... 5.66) x 10-6
Thermal Conductivity, W/(m * °C)
at 46 °C
 
^ to c-axis 25.2
|| to c-axis 23.1
Specific Heat Capacity, J/(kg * °C) 0.7610 x 103
Thermal Stability, °C 162 ±8
Melting Point, °C 2030
 

Mechanical

Density, g/cm3 at 20 °C 3.98
Mohs Hardness 9
Vickers Microhardness, Pa  
^ to c-axis 2200
|| to c-axis 1940
Constants of Elastic Compliance, Pa-1 S11 = 2.3 x 10-12
S12 = -0.7 x 10-12
S13 = 0.4 x 10-12
S33 = 2.2 x 10-12
S44 = -6.8 x 10-12
S14 = 0.5 x 10-12
Young Modulus (E), Pa  
^ to c-axis 46.26 x 1010
|| to c-axis 42.64 x 1010
Shear Modulus (G), Pa  
^ to c-axis 14.43 x 1010
|| to c-axis 16.29 x 1010
Poisson Ratio || to c-axis 0.309
 

Chemical

Molecular Weight 101.96
Solubility  
in water, gram/100 cm3 98 x 1010
 

Ref. Index vs. Wavelength l

Wavelength, Microns Refractive Index no Refractive Index ne
1.0 1.7545 1.7460
2.0 1.7374 1.7299
3.0 1.7015 1.6920
4.0 1.6748 1.6679
 

Internal Transmittance t i (l) vs. Wavelength l

Wavelength, Microns Internal Transmittance
0.2 0.79
0.5 0.97
1.0 0.97
3.0 0.97
5.0 0.45

Custom sizes and specifications are available on request.

Übersicht der Elemente mit Zugang zu unserem Shop

1 18
H
2 13 14 15 16 17
He
Li Be B C
N
O
F
Ne
Na Mg 3 4 5 6 7 8 9 10 11 12 Al Si P S
Cl
Ar
K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se
Br
Kr
Rb Sr Y Zr Nb Mo
Tc
Ru Rh Pd Ag Cd In Sn Sb Te I
Xe
Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi
Po
At
Ra
Fr
Ra
Ac
Ce Pr Nd
Pm
Sm Eu Gd Tb Dy Ho Er Tm Yb Lu


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