A scaled-up version of the 6–8 Kwai-type multianvil apparatus has been developed at the
Bayerisches Geoinstitut for operation over ranges of pressure and temperature attainable in
conventional systems but with much larger sample volumes. This split-cylinder multianvil
system is used with a hydraulic press that can generate loads of up to 5000t (50 MN). The
six tool-steel outer-anvils define a cubic cavity of 100mm edge-length in which eight 54mm
tungsten carbide cubic inner-anvils are compressed. Experiments are performed using …