The optical constants of Zircaloy 2 and 4, which are alloys of zirconium and their thermal oxides, are determined by ellipsometry over a 0.3131–3.39-μm wavelength range. Both the refractive index and extinction coefficient of both types of Zircaloy are similar to those of zirconium. Both components of the complex index increase with wavelength from nominal values of 1.135–i1.523 at 0.3131 μm to 4.846–i7.345 at 3.39 μm. The refractive indices of the oxide of Zircaloy 2 and 4 heated in air are similar to that of zirconium oxide and decrease in value as a function of wavelength from ~2.3 at 0.3131 μm to ~2.0 at 3.39 μm. The extinction coefficient is both thickness and temperature dependent and varies between ~0.1 and 0.3.
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Step 1: Sandpaper 600 grit; horizontal, 3 min; vertical, 3 min. Step 2: Rotary with water slurry, 15-μm alumina, 10 min. Step 3: Rotary with water slurry, 0.05-μm alumina, 60 min at slow speed.
Same polish procedure as done in (a) except step 3 at fast speed. P, Polish. Sandpaper: Grit 240, 2.5 min (horizontal); Grit 360, 2.5 min (vertical); Grit 400, 3.0 min (horizontal); Grit 600, 6.0 min (vertical). Rotary with water slurry, 15 μm, 10 min; 0.05-μm alumina, 55 min (slow speed).
From Ref. 3.
Table II
Complex Refractive Index and Thickness of the Damage Layer of Zircaloy 2 for Different Polishesa
The indices of the smooth substrates were 4.846–i7.345 for Zircaloy 2 and 4.531–i7.108 for zirconium (measurements at 3.39 μm).
Only having step 1 of footnote a of Table I.
Steps 1 and 2 of footnote a of Table I.
Same as footnote a of Table I except step 3 only 10 min.
Same as footnote b of Table I.
Same as footnote a of Table I.
Table III
Pseudo-Optical Constantsa of Zircaloy 2 as a Function of Angle of Incidence Averaged over Four Zones
ϕ0
Wavelength (μm)
0.3650
0.5461
0.8725
75
1.496–i2.003
2.007–i2.498
2.830–i3.264
70
1.453–i1.960
2.012–i2.501
2.844–i3.276
65
1.521–i1.935
2.013–i2.515
2.760–i3.235
45
1.513–i2.003
2.030–i2.524
2.792–i3.153
40
1.485–i2.076
1.988–i2.625
2.706–i3.293
35
1.555–i2.031
2.040–i2.526
2.625–i3.184
The pseudo-optical constants—no contamination film is present in calculations on the measured values of Δ and ψ.
Tables (3)
Table I
Determination of Substrate and Damage Layer Optical Properties of Zircaloy 2 and 4
Step 1: Sandpaper 600 grit; horizontal, 3 min; vertical, 3 min. Step 2: Rotary with water slurry, 15-μm alumina, 10 min. Step 3: Rotary with water slurry, 0.05-μm alumina, 60 min at slow speed.
Same polish procedure as done in (a) except step 3 at fast speed. P, Polish. Sandpaper: Grit 240, 2.5 min (horizontal); Grit 360, 2.5 min (vertical); Grit 400, 3.0 min (horizontal); Grit 600, 6.0 min (vertical). Rotary with water slurry, 15 μm, 10 min; 0.05-μm alumina, 55 min (slow speed).
From Ref. 3.
Table II
Complex Refractive Index and Thickness of the Damage Layer of Zircaloy 2 for Different Polishesa
The indices of the smooth substrates were 4.846–i7.345 for Zircaloy 2 and 4.531–i7.108 for zirconium (measurements at 3.39 μm).
Only having step 1 of footnote a of Table I.
Steps 1 and 2 of footnote a of Table I.
Same as footnote a of Table I except step 3 only 10 min.
Same as footnote b of Table I.
Same as footnote a of Table I.
Table III
Pseudo-Optical Constantsa of Zircaloy 2 as a Function of Angle of Incidence Averaged over Four Zones
ϕ0
Wavelength (μm)
0.3650
0.5461
0.8725
75
1.496–i2.003
2.007–i2.498
2.830–i3.264
70
1.453–i1.960
2.012–i2.501
2.844–i3.276
65
1.521–i1.935
2.013–i2.515
2.760–i3.235
45
1.513–i2.003
2.030–i2.524
2.792–i3.153
40
1.485–i2.076
1.988–i2.625
2.706–i3.293
35
1.555–i2.031
2.040–i2.526
2.625–i3.184
The pseudo-optical constants—no contamination film is present in calculations on the measured values of Δ and ψ.
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