Tuesday, August 18, 2020, 09:06
A short tantalum tube was coated with TaC and wrapped with 3 layers of Ta,
a Ta foil was attached to the end of the tube to be able to measure the temperature during heating
Desired temperature= 1900 C,
Omega Slope set = 0.990,
IGP1 = 3.75e-7 Torr
Autoramp set to TGHT at 0.2 A/min to reach 52 A
Tuesday, August 18, 2020, 13:47
IGP1= 6.8e-7 Torr
TGHT =0 .511 V, 51.3 A
IGP1 = 6.8e-7 Torr
Autoramp set to TGHT at 0.5 A/min to reach 100 A
Tuesday, August 18, 2020, 20:39
IGP1 = 3.3e-7 Torr
Autoramp set to TGHT at 0.5 A/min to reach 430 A
Wednesday, August 19, 2020, 06:57
Autoramp stopped at 402 A
IGP1 = 1.12e-6 Torr
TGHT = 5.6 V, 403.65 A
Autoramp set to TGHT at 1 A/min to reach 500 A
Wednesday, August 19, 2020, 08:59
IGp1 = 1.7e-6 Torr
TGHT = 7.22 V, 500.34 A
After 30 min at 1900 °C, autoramp set to TGHT at -1 A/min to reach 450 A, the ramp will be stopped when the temperature reads 1850 °C
Autoramp stopped at 1845 °C
IGP1 = 1.17e-6 Torr
TGHT = 6.8 V, 472.95 A |