Ice639: differential stack, 2% MPCH mix vs. pure ice I
  Top half: ice I (as 180-250 mu seed ice) + 2% by vol MPCH
  Bottom piece: pure ice I (as 180-250 mu seed ice)
  Cold press 1hr at 150 MPa, 190 K
   
T = 190 K, P = 50 MPa, s = 15 mV (20-25 MPa) step (1)
T = 190 K, P = 50 MPa, s = 16.5 mV (20-25 MPa) step (2)
T = 190 K, P = 50 MPa, s = 15 mV (20-25 MPa) step (3)

 

Legend: Upper graph of each pair is motor speed V (proportional to edot); lower graph is load (in volts). Translate motor V to edot thus: V1.00 =5.7e-6/s = 2%/hr. Load to stress translation for ice63 is roughly ____ MPa/mV, with a ___ mV zero offset. Horizontal scale is time. 5000≈14 hrs.
e=0.263 1523 hrs 2/22/11. End step (3).
  step (3) start
e=0.126 1727 hrs 2/20/11. Step (2)
e=0.062 1420 hrs 2/19/11. Step (1)