Typical Chemical Analysis of HPDA®

Certificate of Quality

Product Name:High Purity Densified Aluminum Oxide (HPDA®) as Rods
Dimensions:Diameter 25-300mm, length 100-300mm
Lot Number:
Date Produced:
Shelf Lifetime:
Quality Control Manager:

Chemical Analysis (PPM)

B
<0.001

Cr0.018
Hf
<0.1
Na
0.925

Mn
<0.022
Ta
Secondary cathode
Mg
0.831

Fe
0.14
W
<0.068
Al2O3
matrix

Ni
<0.052
Re
<0.014
Si
0.986

Cu
0.536
Au
<0.031
P
<0.07

Zn
0.29
Pb
<0.231
S
0.15

Ga
<0.029
Th
<0.005
Cl
0.001

Zr
0.005
U
<0.007
Ca
<0.169

Nb
<0.190


Ti
0.029

Mo
<0.2



Hydrogen Concentration in Sapphire

                                                                                IR analysis             NMR analysis
CZ method, from Vernuil crackles, top            <0.2ppm

CZ method, from Vernuil crackles, center     <0.2ppm                2560ppm
CZ method, from Vernuil crackles, bottom     0.3ppm                919ppm
CZ method, from EMT HPDA® crackles          0.3ppm                 243ppm

Kyropoulos, Vernuil crackles, top                   <0.2ppm
Kyropoulos, Vernuil crackles, center              <0.2ppm                635ppm
Kyropoulos, Vernuil crackles, bottom            <0.2ppm
Kyropoulos, EMT HPDA®, top                          <0.2ppm
Kyropoulos, EMT HPDA®, center                     <0.2ppm               355ppm
Kyropoulos, EMT HPDA®, bottom <0.2ppm

HEM method, from EMT HPDA® crackles     <0.2ppm              410ppm
HEM method, from Vernuil crackles                 12ppm                807ppm

Vernuil, Spolchene                                              2.3ppm               1078ppm
EMT HPDA®                                                          27ppm
Quartz ( certificate ~800 ppm OH)                 1300ppm             346ppm
Muscovit mineral used as standard for NMR  40000ppm

IR transmission is given for samples with the thickness of 10mm


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