High Pressure Lab
High Pressure Lab
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In 1985, the High Pressure Laboratory was established with Instrumentation and Facilities grant from the NSF Division of Earth Sciences which supported the acquisition of a multi-anvil, large-volume, high-pressure apparatus from Sumitomo Press, the first one in North America that allowed for synthesis experiments up to to 30 GPa and 2500 K. In ca. 1992, a new multi-anvil apparatus became availble by combining a Walker module with the Kennedy-Getting type piston cylinder press, known as the Kennedy Press now. We used the Kennedy Press to to pineer the development of in-situ ultrasonic measurements in multianvil apparatus at P > 10 GPa (Li et al., 1994). The Sumitomo and Kennedy Presses are housed in a 2000 sq. ft. building renovated by the university and located just behind the Earth and Space Sciences building. We also have a third apparatus, modified from "The Girdle Press," (a 500 Ton Harwood press) by installing 6-anvils high pressure device.
In addition to the above-mentioned apparatuses, the High Pressure Laboratory is equipped with a full range of sample- and experiment-preparation materials. The facility houses a lathe for machining of parts used in the high pressure experiments, arc-welders for preparation of metal capsule materials for the experiments, and a variety of hand tools and other materials necessary for getting samples ready for experiments. The High Pressure Laboratory is completely under user-supported operation, i.e., the users will be billed for actual cost of the experiment.
Currently, the High Pressure Laboratory is under the directorship of Professor Baosheng Li. If you have any questions about the capabilities of the Hihg Pressure Lab, or interested in using these facilities in your research, please email him at Baosheng.Li@sunysb.edu.
The Sumitomo Press (The Red Press) is a 2000-ton uniaxial split-cylinder apparatus (USCA-2000) which is capable of generating pressures 1-30 GPa and temperatures of 300-2500 K with sample volumes of 1-10 mm3. It has been primarily used for synthesis experiments at simultaneous high pressures and temperatures. To date, a total number of more than 4500 experiments have been performed for materials synthesis and in-situ physical property measurements.
Kennedy Press, the "Green Press", is a 1000-ton uniaxial split-cylinder apparatus (USCA-1000). with a Walker device. The Kennedy Press is primarily used for in-situ ultrasonic velocity measurements, electrical conductivity measurements, as well as sample synthesis at P < 20 GPa.
Girdle Press, the 'Blue Press", consists of a 500 Ton Harwood press, which is an end-loaded piston-cylinder apparatus, with a large ram compressing the entire pressure vessel, and an interior piston that moves within the pressure vessel that independently applies pressure to the sample region. This device is capable of achieving pressures of up to around 60 kbar (6 GPa) at high temperatures.
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