Inhaltsbereich

Hydrothermal laboratory

The laboratory is equipped with horizontal and vertical cold-seal pressure vessels for the synthesis of crystals or glasses or to study interactions between minerals/rocks, melts, and fluids at hydrostatic conditions. The samples are sealed in Au or Pt capsules. An advantage is that long-term runs can be done to investigate equilibria between solid phases.

200 MPa line:
6 externally heated cold-seal autoclaves (steel: ATS). T-P limits: 800 °C at 200 MPa or 900 °C at 100 MPa. Pressure medium: H₂O. The temperature can be controlled via internal or external thermocouples, depending on capsule length. Maximum capsule diameter: 5 mm.

500 MPa line:
12 cold-seal autoclaves (steel: ATS or RENE41). T-P limits: 750 °C at 500 MPa or 900 °C at 100 MPa. Pressure media: H₂O (up to 10 autoclaves), or CO₂ (2 autoclaves, separate pressure generation unit, to about 400 MPa). The temperature can be controlled via internal or external thermocouples, depending on capsule length. Maximum capsule diameter: 5 mm.

Rapid quench line:
6 rapid quench autoclaves (steel: ATS). T-P limits: 800 °C at 200 MPa or 900 °C at 100 MPa. Pressure medium: H₂O. The temperature is controlled via external thermocouples.