A sharp change in the mineralogy of annealed protoplanetary dust at the glass transition temperature

M. Roskosz; J. Gillot; F. Capet; P. Roussel; H. Leroux

doi:10.1051/0004-6361/201016244

Home

All issues

Volume 529 (May 2011)

A&A, 529 (2011) A111

Full HTML

Free Access

Table 2

Compilation of reported mineralogical assemblages recovered after annealing of different amorphous starting materials of MgSiO₃ composition.

Temperature (K)	Starting Material	Mineralogy^a	Analytical Methods^b	References

Below T_g
723–873	Sol-Gel (OH detected)	En	IR	1
933	Sol-Gel (precipitation)	Fo	XRD/IR	2
970	Sol-Gel (precipitation)	Fo	XRD/IR	2
973	Sol-Gel (xerogel)	Fo	XRD/TEM/SEM/IR	3
996	Glass powder (5–10 μm)	Fo+Trid	TEM/SEM/IR/XRD	4
1000	Laser ablation spherules	Fo+Trid	TEM	4
1000	Smokes	Fo	IR	5
1000	Sol-Gel (precipitation)	Fo	XRD/IR	2
T_g ± 20 K
1023	Sol-Gel (xerogel)	Fo+En	XRD/IR/SEM	6
1030	Glass powder (5–10 μm)	Oen	TEM	4
1033	Glass powder (5–10 μm)	Fo+Cen+Oen	XRD/TEM	3
1053	Sol-Gel (xerogel)	Fo+ En	XRD/IR/SEM	6
1060	Glass powder (5–10 μm)	Oen	TEM	4
1063	Sol-Gel (xerogel)	Fo+En	XRD/IR	6
Above T_g
1073	Laser ablation spherules	En	SEM/IR	7
1073	Sol-Gel (xerogel)	Fo+En	XRD/IR	6
1080	Glass chips (100–130 μm)	Oen	IR/TEM/SEM/XRD	4
1080	Glass powder (5–10 μm)	Oen	TEM	4
1109	Sol-Gel (spray-drying)	Fo+Cen+Oen	XRD/DSC	8
1121	Glass chips (100–130 μm)	Oen	IR/TEM/SEM/XRD	4
1121	Glass powder (5–10 μm)	Oen	TEM	4
1165	Glass chips (100–130 μm)	Oen	IR/TEM	4
1173	Geopolymers	Fo + Oen	XRD/DTA	9
1173	Sol-Gel (precipitation)	Cen+Oen	XRD/DSC	8
1200	Smoke	Fo+Silica	IR	5
1273	Sol-Gel (xerogel)	Fo+Cen+Oen+Silica	XRD/TEM	3
1273	Laser ablation spherules	En	SEM/IR	7
1273	Sol-Gel (xerogel)	Cen+Oen	XRD/DTA	10

References. (1) Jäger et al. (2003); (2) Thompson et al. (2002); (3) Roskosz et al. (2009); (4) Fabian et al. (2000); (5) Hallenbeck & Nuth (1998); (6) Murata et al. (2009); (7) Brucato et al. (1999); (8) Douy (2002); (9) Van Long (2008); (10) Maliavski et al. (1997).

Notes.

^(a)

Fo: forsterite; Trid: tridymite; En: enstatite (no distinctions between polymorphs); Oen: orthoenstatite; Cen: clinoenstatite; Cr: cristobalite.

^(b)

XRD: X-ray diffraction; IR: infra-red spectroscopy; TEM: transmission electron microscopy; SEM: scanning electron microscopy; DSC: differential scanning calorimetry; DTA: differential thermal analysis.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.