IUCrJ
(2020).
7
, doi:10.1107/S2052252520002729 Supporting information
IUCrJ
Volume 7 (2020)
Supporting information for article:
First synthesis of a unique icosahedral phase from the Khatyrka
meteorite by shock-recovery experiment
Jinping Hu, Paul D. Asimow, Chi Ma and Luca Bindi
IUCrJ
(2020).
7
, doi:10.1107/S2052252520002729
Supporting information,
sup-1
Figure S1
Shock pressure history in the layers of the Al-Cu-W GDI sample
for shot 1253 (Ta
flyer, 0.93 km/s impact velocity) and 1255 (SS304 flyer, 1.28 k
m/s). Calculated by Wondy 1-D
hydrocode. The calculation is based on the full layers of Al-Cu
-W stack in the thick part of the
GDI wedge and used material properties in Kelly
et al
. (2019). See Section 2.2 in the main text
for details.
IUCrJ
(2020).
7
, doi:10.1107/S2052252520002729
Supporting information,
sup-2
Figure S2
The occurrences of Al-Cu-Fe quasicrystals with intermetallic ph
ases in S1253. (a) A
SEM BSE image showing the strongly deformed Al and Cu grains ad
jacent to the melted reaction
zone. In the reaction zone, all the Al grains are consumed and
remnant Cu grains co-exist with
intermetallic phases. Boxed areas are enlarged in b and c. (b)
The i-phase II + khatyrkite +
stolperite assemblage. High magnification images of these phase
s are in Figure 3 and S3. White
boxes mark the most well-defined i-phase II domains. The chemic
al composition of each grain is
in Table S1. (c) A khatyrkite assemblage that excludes i-phase.
The interstitial phases are too fine
to be determined, inferred to be mixture of Al-rich alloys. The
composition of the khatyrkite is in
Table S2.
IUCrJ
(2020).
7
, doi:10.1107/S2052252520002729
Supporting information,
sup-3
Figure S3
BSE images of the i-phase II bearing area using different SEM a
ccelerating voltages.
The high-voltage setup has larger excitation volume and the cor
responding image shows more
subsurface information. At 20 kV, the steel (ss) fragment at su
bsurface stands out more whereas
the grain boundaries of submicron quasicrystal domains become a
lmost indistinguishable. The
bottom figure is the compositions from EDS analysis of individu
al i-phase II domains using
different accelerating voltages. Line connects the results from
the same domain. Corresponding
data are in Table S1.
IUCrJ
(2020).
7
, doi:10.1107/S2052252520002729
Supporting information,
sup-4
Figure S4
BSE images of the reaction zones on the Al-rich side of the GDI
. (a) Overall image
for the strong deformed corner of the GDI wedge. The i-phase II
region on the Cu-rich side is
presented in Figure 3, S2 and S3. The Al-rich side is enlarged
in b. (b) The assemblage with
distinctively darker Al-rich phases and brighter Fe-rich phases
adjacent to the steel. The remnant
Al grains are almost black at this contrast. (c) The radial pat
tern of stolperite aggregates. Mixture
of remnant Al and hollisterite is on the upper-left corner. The
compositions of the phases are
shown in Table S2.
IUCrJ
(2020).
7
, doi:10.1107/S2052252520002729
Supporting information,
sup-5
Table S1
EDS analysis of i-phase II domains in shot 1253
Domain Accelerating
Voltage
Al Cu Fe Cr Ni
S3 10 kV
62.71 28.47 7.30 1.53
12 kV
65.43 25.98 6.99 1.61
15 kV
64.74 29.30 4.57 1.06 0.34
S4 10 kV
60.16 33.87 4.91 1.06
12 kV
62.75 31.39 4.13 1.15 0.58
15 kV
62.39 33.05 3.35 0.89 0.31
S6 10 kV
60.81 30.73 6.90 1.56
12 kV
64.27 26.67 6.79 1.50 0.77
15 kV
63.27 29.56 5.45 1.18 0.54
S7 10 kV
62.42 26.60 9.29 1.69
12 kV
64.41 27.64 5.86 1.41 0.68
15 kV
64.48 29.58 4.56 1.08 0.30
S8 10 kV
60.84 31.76 6.16 1.24
12 kV
63.25 30.91 4.77 1.06
15 kV
62.41 33.47 2.95 0.73 0.43
S9 10 kV
63.92 25.74 8.86 1.48
12 kV
64.93 27.04 6.86 1.16
15 kV
64.51 30.15 4.25 0.84 0.25
20 kV
64.47 31.08 3.29 0.78 0.37
S10 10 kV
60.81 31.55 6.29 1.35
12 kV
64.64 28.87 5.30 1.19
15 kV
64.03 30.69 3.91 0.98 0.40
20 kV
64.49 30.62 3.58 0.97 0.35
S12 10 kV
59.86 30.70 7.42 2.02
12 kV
62.10 26.90 8.23 1.88 0.89
15 kV
60.21 31.06 6.44 1.76 0.54
20 kV
60.71 29.52 7.15 1.93 0.69
S15 10 kV
61.74 33.32 4.07 0.87
12 kV
65.11 30.21 3.83 0.85
15 kV
65.48 31.40 2.22 0.65 0.25
Averages
Al Cu Fe Cr Ni
10kV
61.47 30.30 6.80 1.42 -
σ
1.33 2.82 1.69 0.34 -
12kV
64.10 28.40 5.86 1.31 0.32
σ
1.14 2.01 1.47 0.32 0.39
15kV
63.50 30.92 4.19 1.02 0.37
σ
1.62 1.51 1.28 0.33 0.11
Data are presented in atomic percent and normalized to 100%. Th
e uncertainties for the averages are
calculated in standard deviations. Each spot is analyzed on SEM
-EDS with 10, 12 and 15 kV accelerating
voltages, of which three are analyzed at 20 kV. The analyzed do
mains are shown in Figure S2.
IUCrJ
(2020).
7
, doi:10.1107/S2052252520002729
Supporting information,
sup-6
Table S2
Composition of Al-Cu-Fe intermetallic phases in non-QC regions
in Shot 1253
Occurrence Phase
Al Cu Fe Cr Ni Mn Si
Fig. S2c Khatyrkite 71.28 28.72
67.25 32.75
Fig. S4c Hollisterite 64.67 8.15 18.71 5.48 2.51 0.47
Stolperite 48.96 7.6 30.31 9.04 3.24 0.54 0.31
Data are presented in atomic percent and normalized to 100%. Co
rresponding textures of the phases are
shown in Figure S2c and S4c.
Table S3
Compositions of i-phase and intermetallic phases in Shot S1255
Phase
Al Cu Fe Cr Ni
i-phase 70.07 10.57 14.10 3.73 1.52
66.56 11.48 15.92 4.17 1.87
67.19 9.27 17.15 4.66 1.73
68.21 11.63 14.49 4.18 1.50
70.09 11.74 13.06 3.42 1.68
67.71 11.68 13.80 4.45 2.36
66.96 11.14 15.62 4.20 2.08
71.68 12.12 11.53 3.16 1.52
average 68.56 11.20 14.46 4.00 1.78
σ
1.84 0.91 1.77 0.51 0.31
Stolperite 47.54 34.47 12.69 2.92 2.38
53.44 14.13 22.97 6.69 2.77
58.45 24.71 12.12 3.41 1.32
Hollisterite 70.43 10.58 13.68 3.89 1.42
The compositions are shown in atomic percent and normalized to
100%. The uncertainty is presented in
standard deviation (σ). Occurrences of the phases are shown in
Figure 4.
IUCrJ
(2020).
7
, doi:10.1107/S2052252520002729
Supporting information,
sup-7
Table S4
Compositions of icosahedral phases in shock experiments and the
Khatyrka
meteorite
S1253
i-phase II
(this
study)
natural
i-phase
II
1,2
natural
icosahedrit
e (i-phase
I)
1,3
S1255
i-phase
(this study)
Previous
shock
synthetic
4
Previous
shock
synthetic
4
Previous
shock
synthetic
4
Previous
shock
synthetic
5
Al
61.47 61.92 63.19 68.56 72.30 73.30 67.94 70.3
Cu
30.30 31.22 24.23 11.20 9.70 11.57 11.30 11.5
Fe
6.80 6.78 12.55 14.46 15.70 11.30 15.42 13.2
Cr
1.42 0.08 0.03
4.00 1.02 2.73 3.73 3.7
Ni
-
-
-
1.78 1.23 1.11 1.62 1.3
Cr/Fe 0.21 0.01
-
-
0.06 0.24 0.24 0.28
Ni/Cr
-
-
-
-
1.21 0.41 0.43 0.40
Uncertainties
Al
1.33 0.99 0.33
1.84 0.50 0.40 0.13 2.30
Cu
2.82 0.80 0.55
0.91 0.10 0.05 0.06 1.00
Fe
1.69 0.37 0.71
1.77 0.50 0.30 0.13 1.00
Cr
0.34 0.02 0.03
0.51 0.03 0.06 0.05 0.40
Ni
0.31 0.03 0.05 0.05 0.20
Data are presented in atomic percentage and normalized to 100%.
Uncertainties are presented in standard
deviation. Absent numbers are for elements below detection limi
t or not reported.
1
Bindi et al. 2016,
2
Lin et
al. 2017,
3
Bindi et al. 2011,
4
Asimow et al. 2016,
5
Oppenheim et al. 2017a