High Pressure

HP 400 kN press

HP 400 kN press

Specifications

• compressive force: 450 kN
• repulsive force: 220 kN
• dynamic pressure up to 10 Hz possible

Cryostat CC-11-P to be used with HP 400 kN press

Specifications

• Temperature range: 20 K – 600 K
• Cool-down time RT – 20 K: 4 h
• Diameter of sample space: max. 16 mm
• Total height of sample space: 10 mm
• Pressure range: 200 MPa for Ø 16 mm anvil

Cut through CC-11-P

A special challenge is to go to low temperatures at high pressures. The newly constructed high-pressure cryostat allows one to apply and vary the force in situ, even at low temperature. The sample cell is operated externally by the hydraulic HP 400 kN press. It can be mounted in a dewar and cooled down to below 10 K within four hours. With a piston-in-cylinder cell and a piston diameter of 16 mm a maximum pressure of 2.0 GPa (20 kbar) can be achieved at a sample size up to 30 mm length and 16 mm diameter. Reducing the piston diameter and the sample volume the pressure can be increased up to 100 kbar. Using anvil cells the pressure range extends to 30 GPa (300 kbar) and above. In addition, a dynamic pressure can be superimposed on the static pressure with a frequency of up to 10 Hz.

To load gas pressure cells the MLZ provides a gas compression unit for inert gas pressure up to 10 kbar. The unit can be operated either manually or remote controlled. The remote controlled operation allows for individually programmable pressure time profiles. The measurement system includes a high-precision manometer and a pressure transmitter that cover the range up to 10 kbar.

Specifications

Pressure range 10⁵ Pa ≤ p ≤ 10⁹ Pa

• 10⁵ Pa ≤ p ≤ 7 · 10⁸ Pa Heise high-precision
  manometer; resolution 0.1 % ME
• 7 · 10⁸ Pa ≤ p ≤ 10⁹ Pa transmitter; resolution 9 · 10⁶ Pa