Difference between revisions of "Hot Gas Blower (Cyberstar)"
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=== Al2O3 Thermal Expansion === | === Al2O3 Thermal Expansion === | ||
In-situ calibration of the hot gas blower was performed (summer 2012) using the known thermal | In-situ calibration of the hot gas blower was performed (summer 2012) using the known thermal expansion of Al2O3 (alumina) ''a'' & ''c'' unit cell parameters as a function of temperature. | ||
Full diffraction patterns were collected for select (nominal) temperatures between 100 - 950 C at 11-BM using a X.X mm diameter fused quartz capillary load with ??? Al2O3 powder. | |||
Refined | |||
Revision as of 21:50, 24 September 2012
About
11-BM has a dedicated Cyberstar Hot Gas Blower. This can be used to heat small diameter capillary samples from ambient temperature to ~ 950 °C
About
Temperature Range and Ramp Rate.
- ambient temperature to ~ 950 °C
- Max ramp rate on heating & cooling is 5 deg C/min (300 C/hour)
Users should plan experiments to incorporate these heating and cooling ramp times.
11-BM Hot Gas Blower Image
Temperature Profile & Alignment
Temperature Calibration
Al2O3 Thermal Expansion
In-situ calibration of the hot gas blower was performed (summer 2012) using the known thermal expansion of Al2O3 (alumina) a & c unit cell parameters as a function of temperature.
Full diffraction patterns were collected for select (nominal) temperatures between 100 - 950 C at 11-BM using a X.X mm diameter fused quartz capillary load with ??? Al2O3 powder.
Refined
11-BM calibration results kindly shared by Jae-Hyuk Her, GE Global Research.
J. Appl. Cryst. (1993). 26, 77-81 [ doi:10.1107/S002188989200877X ]
"High-temperature X-ray diffraction: solutions to uncertainties in temperature and sample position"
N. E. Brown, S. M. Swapp, C. L. Bennett and A. Navrotsky
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Phase Transitions
SiO2
PbTiO3
