Hufnagel Group Facilities
Department of Materials Science and Engineering, Johns Hopkins University
X-ray Scattering Facilities
- Rigaku 18 kW theta-theta rotating-anode powder diffractometer, equipped
with high vacuum hot stage (maximum temperature 1200 °C) and CCD camera
for real-time x-ray diffraction observations of phase transformations.
(The hot stage and CCD camera are not shown in these photos.) This instrument
was partially funded by a DURIP grant through the Army
Research Office, with additional funding from the Center
for Nondestructive Evaluation.
- Enraf-Nonius 18 kW rotating-anode small-angle x-ray scattering system,
equipped with Inel position-sensitive detector and Philips mini-proportional
counter, used for observations of phase separation in amorphous alloys.
This instrument was partially funded by an IMR grant from the National Science Foundation.
Sample Preparation Facilities
- MRF vacuum arc melting furnace, extensively modified with a high-purity
Ar supply, turbomolecular pumping system, and "suction casting"
capability.
- Vacuum induction melting furnace with 20kW Lepel power supply.
- Three Spex 3000 ball mills for mechanical alloying (no photo available).
- Vacuum melt-spinning equipment (no photo available).
Electron Microscopy Facilities
The electron microscope facilities are operated by the JHU Materials Reseach Science and Engineering Center (MRSEC). Shown here are a couple of instruments that we use extensively:
- Philips CM300 FEG TEM with Gatan Imaging Filter (GIF) for energy-filtered microscopy, 0.2 nm point-to-point resolution, STEM capability, and EDS.
Synchrotron Facilities
In addition to our facilities at Johns Hopkins, we make extensive use of synchrotron radiation, particularly at the Advanced Photon Source (APS) and the Stanford Synchrotron Radiation Laboratory (SSRL).
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