 Monday, October 25, 2021, 11:53, Darwin Ortiz Rosales, TaC, 42218-4, HP-IG-LIS, Done, TaC coating/sintering
|
Monday, October 25, 2021, 11:52
Ta IGLIS tube was coated with TaC and wrapped with Ta heat-shields (3 layers)
Desired temperature = 1900 C (expected TGHT ~430 A), TBHT will be set fixed at 230A (max).
Evap 2 will be pumped down over previous night
Good vacuum = 3.00 e-3 Torr
Bad vacuum = 5.00 e-2 Torr
Initial total weight = 439.0 g
Final weight after sintering = 438.8 g
Tuesday, October 26, 2021, 07:18
IGP1= 9.2 e-07 Torr
Will ramp to 50A at 1A/min on both TGHT and TBHT.
Tuesday, October 26, 2021, 08:37
IGP1= 3.0 e-05 Torr
TGHT= 50.2 A, 0.6 V
TBHT = 49.4 A, 0.5 V
Will allow pressure to drop further then start further ramp up
Tuesday, October 26, 2021, 14:36
TGHT = 100 A, 1.3 V
TBHT = 99 A, 1.0 V
IGP1 = 3.e-5 Torr
ramp up TGHT to 400 A and TBHT to 230 A at 1.5 A/ min
Tuesday, October 26, 2021, 18:46
Will keep at 430A on TGHT and 230A on TBHT for 4 hours.
OMEGA reading = 1653 C is suspicious based on previous coating.
Tuesday, October 26, 2021, 23:05
TGHT = 430.5 A, 6.9 V
TBHT = 232.09A, 2.8 V
IGP1= 8.8e-06 Torr
Start cooling THGT at -2A/min and TBHT at -1A/min |
|
Wednesday, October 27, 2021, 11:09, Darwin Ortiz Rosales, Ta, 44691-3, LP-SIS, Done, TaC coating/sintering
|
Wednesday, October 27, 2021, 11:07
Monday, October 25, 2021, 11:52
Ta LPSIS tube was coated with TaC and wrapped with Ta heat-shields (3 layers)
Desired temperature = 1900 C (expected TGHT ~430 A), TBHT will be set fixed at 230A (max).
Evap 2 will be pumped down over previous night
Good vacuum = 3.00 e-3 Torr
Bad vacuum = 5.00 e-2 Torr
Initial total weight = 464.8 g
Final weight after sintering =
Thursday, October 28, 2021, 07:46
IGP1= 7.4e-07 Torr
Initiating autoramp to 40 A on both TGHT and TBHT
ramp rate = 1 A/min
Will keep at 40A for approximately 1 hour or until pressure below 1e-05 Torr
Thursday, October 28, 2021, 09:41
IGP1= 1.9e-06 Torr TGHT = 40.3 A, 0.48 V TBHT = 39.0 A, 0.48V
Autoramp @ 1A/min to 100A on both TGHT and TBHT
Thursday, October 28, 2021, 12:57
IGP1= 1.1e-06 Torr
TGHT = 100 A, 1.3 V
TBHT = 100 A, 1.2 V
Start autoramp at 2A/min to 400 for TGHT and 230 for TBHT
The current from the plot (below) required to reach 1900 C seems too high.
Will take to 430 A as previous. The slope was chequed previously. Need to check OMEGA.
Thursday, October 28, 2021, 20:08
IGP1= 3.34 e-06 Torr
TGHT = 430A , 7.2 V
TBHT = 233A, 4.1V
OMEGA = 1628C
Start ramp down at -2A/min for TGHT and -1A/min for TBHT
| |
44691-3 TaC coating |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
TGHT |
|
TBHT |
|
|
Temperature (C) |
Current (A) |
|
|
|
|
|
|
|
|
|
|
|
| |
Temperature ( C ) |
Voltage (V) |
Current (A) |
Voltage (V) |
Current (A) |
|
1900 |
512.88 |
|
|
|
|
|
|
|
|
|
|
|
| |
1250 |
3.90 |
255.0 |
|
|
|
1700 |
434.06 |
|
|
|
|
|
|
|
|
|
|
|
| |
1302 |
4.30 |
279.0 |
|
|
|
1800 |
473.47 |
|
|
|
|
|
|
|
|
|
|
|
| |
1343 |
4.60 |
294.0 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
1423 |
5.10 |
325.0 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
1484 |
5.7 |
348.0 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
1555 |
6.2 |
377.0 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
Slope |
2.537 |
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
Y intercept |
598.66 |
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
R2 |
0.999 |
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Monday, November 01, 2021, 07:39, Darwin Ortiz Rosales, Empty, 44508-3, LP-SIS, Done, TaC coating/sintering 
|
Monday, November 01, 2021, 07:37
Ta tube was coated with TaC and wrapped with Ta heat-shields (3 layers)
Note* on the leading end of the assembly I placed tantalum foil heatshield similar to what I previously observed there. I believe it may impact temperature at the entrance of the container tube.
Desired temperature = 1800 C (expected TGHT ~430 A), TBHT will be set fixed at 230A (max).
Evap 2 was pumped down over the weekend
Good vacuum = 3.00 e-03Torr
Bad vacuum = 5.00 e-02 Torr
Monday, November 01, 2021, 07:39
Starting autoramp at 1 A/min to 40 A on both TGHT and TBHT
IGP1= 3.5 e-07 Torr
Monday, November 01, 2021, 09:08
IGP1= 1.6 e-06 Torr
TGHT = 40A, 0.99 V
TBHT = 39A, 1,2 V
Start autoramp @ 1A/min for both TGHT and TBHT to 400A and 230A respectively.
Monday, November 01, 2021, 14:33
OMEGA= 1545 C
TGHT = 354 A, 6.0 V
TBHT = 233 A, 4.8 V
IGP1= 1.7 e-05 Torr
increase ramp rate to 2A/min
Monday, November 01, 2021, 14:44
OMEGA= 1585C
TGHT = 367A, 6.3 V
TBHT = 233 A, 4.8 V
IGP1= 1.7 e-05 Torr
Monday, November 01, 2021, 14:49
OMEGA= 1604 C
TGHT = 377A, 6.5V
TBHT = 233 A, 4.8 V
IGP1= 2.1 e-05 Torr
Monday, November 01, 2021, 14:53
OMEGA= 1624C
TGHT = 384 A, 6.6V
TBHT = 233 A, 4.8 V
Monday, November 01, 2021, 15:00
OMEGA= 1660C
TGHT = 400 A, 6.8V
TBHT = 233 A, 4.8 V
IGP1= 2.4 e-05 Torr
Monday, November 01, 2021, 15:17
Initiate autoramp to 430A on TGHT @2A/min
Monday, November 01, 2021, 16:34
OMEGA = 1750 C
TGHT = 430 A, 7.3 V
Better heat insulation than before. Next time need to place a Ta heatshield at the other end on the copper assembly. Will raise T to 435 A and keep until 1930 hours.
Monday, November 01, 2021, 20:23
IGP1= 1.6 e-05 Torr
Omega = 1760 C
TGHT= 436 A, 7.4 V
TBHT = 232 A, 4.8 V
* Note: kept a approx 1 hour extra hoping that pressure would drop further
Started ramp down at -2A/min for TGHT and -1A/min for TBHT
Coating looks reasonably good.
|
|
Wednesday, November 03, 2021, 09:24, Darwin Ortiz Rosales, Empty, 44691-10, LP-SIS, Done, TaC coating/sintering
|
Ta tube was coated with TaC and wrapped with Ta heat-shields (3 layers)
Note: placed tantalum foil heatshield on both sides of the copper heatshield assembly.
Desired temperature = 1800 C (expected TGHT ~430 A), TBHT will be set fixed at 230A (max).
Evap 2 was pumped down yesterday
Good vacuum = 3.00 e-03Torr
Bad vacuum = 5.00 e-02 Torr
Wednesday, November 03, 2021, 09:27
Start autoramp at 1A/min to 40A on both TGHT and TBHT
IGP1 initial: 5.3 e-07 Torr
Wednesday, November 03, 2021, 10:22
IGP1= 1.1 e-05 Torr
TGHT = 40 A, 0.5 V
TBHT= 38.5 A, 0.41 V
Will keep while monitoring pressure at 0.5 A/min to 60A
Wednesday, November 03, 2021, 10:35
IGP1 pressure trending down
IGP1= 6.7 e-06 Torr
Start ramp up to 60A at 0.5A/min
Wednesday, November 03, 2021, 11:24
IGP1 2.6 e-06 Torr and trending down
Start ramp up to 400A on TGHT and 230A on TBHT at 1A/min
Wednesday, November 03, 2021, 13:28
IGP1= 1.4e-05 Torr and trending down slowly. Will increase ramp speed to 1.5A/min on both TGHT and TBHT to the same final current as before.
Wednesday, November 03, 2021, 15:56
IGP1= 2.1 e-05 Torr
TGHT = 400 A, 6.9 V
TBHT = 233 A, 4.1 V
OMEGA = 1645 C
Will manually ramp up to 1800 C
Wednesday, November 03, 2021, 16:43
TGHT = 450 A, 7.9 V
TBHT = 233 A, 4.1 V
OMEGA = 1770 C
IGP1 increasing in Pressure. Will leave for 4 hours at this current.
Wednesday, November 03, 2021, 20:48
IGP1= 1.0 e-05 Torr
TBHT= 233A, 4.1 V
TGHT = 450 A, 7.9 V
OMEGA = 1751 C
Starting ramp down at -2A/min on TGHT and -1A/min on TBHT
|
|
Wednesday, March 09, 2022, 06:27, Darwin Ortiz Rosales, TaC, 42464-2, HP-FEBIAD, Done, TaC coating/sintering
|
Wednesday, March 09, 2022, 06:25
Ta HP-FEBIAD was coated with TaC and wrapped with Ta heat-shields (3 layers)
Desired temperature = 1800 C , TBHT will be set fixed at 230A (max).
Evap 2 will be pumped down over previous night
Good vacuum = 3.00 e-4 Torr
Bad vacuum = 5.00 e-2 Torr
IGP1= 1.2 e-06 Torr
Start autoramp @1A/min to 60 A
Wednesday, March 09, 2022, 09:29
TGHT= 60 A 0.67 V
TBHT = 60A 0.59V
IGP1= 1.77e-6 Torr
autoramp @ 2A/min to 120 A and monitor (both TGHT and TBHT)
Wednesday, March 09, 2022, 10:19
IGP1 was increasing to fast. Manually lowered current to 105A on both TGHT and TBHT.
Will allow pressure to stabilize
Plant group requested maintenance work for EF12/13
Therefore, keeping system as is until further instructions from plant group.
Thursday, March 10, 2022, 15:18
Will resume ramp up to 120 A for both TGHT and TBHT @ 1A/min
IGP1= 6.4 e-07 Torr
Thursday, March 10, 2022, 15:30
Increase ramp rate to 2A/min
Thursday, March 10, 2022, 17:41
@ 245 A TGHT and 230A TBHT ramp back down to 100 A for both as OMEGA not displaying Temperature. Will need to go in tomorrow to fix OMEGA
Friday, March 11, 2022, 14:25
Ramping at 2A/min to 230A for both TGHT and TBHT
Friday, March 11, 2022, 15:17
IGP1= 1.23e-6 Torr
Continue Ramping TGHT @ 3A/min to 400 A keep TBHT at 230A
Friday, March 11, 2022, 22:22
@ TGHT 725 A 1800 C was reached on OMEGA
Kept there since 7:20 pm. Start rampdown at 11:20 pm.
Friday, March 11, 2022, 23:19
IGP1= 6.9e-6 Torr
OMEGA= 1805C
TGHT= 725 A, 10.9V
TBHT= 232A, 3.1V
Start rampdown at -2A/min on TGHT and -1A/min for TBHT
|
|
Monday, April 01, 2019, 16:35, Darwin Ortiz Rosales, , 43630-4, , Done, TaC coating/graphite/sintering
|
Monday, April 01, 2019, 16:35
Container was coated with TaC and a roll of graphite inserted inside the tube. A couple of TaC coated Ta springs inside to keep graphite pressed against walls of cylinder.
Container wrapped with 2 Ta heat shields.
Desired temp = 1900 C, Omega slope set = 0.990, Auto ramping TGHT at 1A/min to reach 400A, TGHT will be tapped up accordingly to reach desired Temp.
Good vac at 3.00-5 Torr
Bad vac at 5.0e-5 Torr.
Chamber is currently being pumped down. Sintering will proceed tomorrow.
Tuesday, April 02, 2019, 06:27
IGP1 = 4.37e-7 Torr
Current is manually tapped to 40 A
Tuesday, April 02, 2019, 08:12
Pressure increased to IGP1 = 1.15e-5 Torr
and it stabilized to IGP1 = 2.32e-6 Torr after ~1.5 hrs
Autoramp is set to 1 A/min to 400 A
Tuesday, April 02, 2019, 08:45
Autoramp stopped momentarily, to stop current reduction
When pressure reduced to ~4e-5Torr, current was tapped manually to 50 A
Autoramp is set again, the conditions are
IGP1 = 2.5e-5 Torr
TGHT = 58.87 A, 0.36 V
Tuesday, April 02, 2019, 09:31
Autoramp stopped momentarily, to avoid current reduction
When pressure reduced, autoramp is set again,
the conditions are:
IGP1 = 2.9e-5 Torr, TGHT = 0.52 V, 71.5 A
Tuesday, April 02, 2019, 15:32
Autoramp stopped momentarily, to avoid current reduction
conditions: IGP1=4.99e-5 Torr, TGHT = 0.78 V, 85.9 A
When pressure reduced, autoramp is set again,
Tuesday, April 02, 2019, 22:37
Camera conexion was lost
Autoramp reached 400 A
the current was manually raise to 425 A to allow the completation of the process
Wednesday, April 03, 2019, 00:27
Camera connection still off
The current was reduced to 410 A to match with the estimated temperature
Wednesday, April 03, 2019, 06:56
Camera connection is back, temperature reading is 1786 C
IGP1 5.01e- Torr
TGHT = 6.93 V, 412.22 A
Autoramp was set to -1A/min to 0A
Wednesday, April 03, 2019, 11:01
IGP1 = 1.67e-7 Torr
TGHT = 2.25 V, 179.53 A
Autoramp changed to -2 A/min
Wednesday, April 03, 2019, 16:54
The tube was removed from the EVAP2,
The coating has a different color than regular coatings, but it doe not seem like the graphite adhered as expected. |
|
Monday, September 09, 2024, 19:08, Darwin Ortiz Rosales, TaC, , LP-SIS, Done, TaC coating sintering LP-SIS with gas line
|
Monday, September 09, 2024, 19:06
The coated container was wrapped in 4 Ta foil heatshields.
Vacuum IGP1 initial =2.6 e-06 Torr
Target temperature on OMEGA= 1800-1900 C
OMEGA slope:= 0.990
Target time at max temperature = 4 hours
Final Current TBHT= 230 A
Final TGHT current= ~400A (adjustable)
Heating autoramp starged at 1A/min on TGHT and TBHT until outgassin peak passed
Then at 1A/min to =400 A TGHT and 230A TBHT
Good vacuum = 5.0 e-04 Torr
Bad vacuum = 5.0E-02 Torr
Monday, September 09, 2024, 19:08
Peak passed around 70A will continue ramp up at 1A/min to 400A on TGHT and 230A TBHT
Tuesday, September 10, 2024, 13:13
Was ramped down at -2 A/min TGHT and -1 A/min TBHT
|
|
Tuesday, August 22, 2023, 09:35, Darwin Ortiz Rosales, TaC, 44692-11, TARGET BOAT, Done, TaC coating sintering (second coating on same tube)
|
Tuesday, August 22, 2023, 09:29
The coated container was wrapped in 4 Ta foil heatshields.
Target temperature on OMEGA= 1850-1900 C
OMEGA slope:= 0.990
Target time at max temperature = 2 hours
Final Current TBHT= N/A
Final TGHT current= ~400A (adjustable)
Heating autoramp starged at 2A/min(1A/30s) on TGHT 100A
Then at 4A/min to =400 A.
Good vacuum = 5.0 e-04 Torr
Bad vacuum = 5.0E-02 Torr
IGP1 initial =2.2e-06 Torr
Tuesday, August 22, 2023, 10:25
IGP1= 2.31e-06 Torr
TGHT 98.0 A (RD), 1.35 V
Start ramping at 2A/min to 400A
Tuesday, August 22, 2023, 11:54
Reached 1860 @ TGHT = 353A, 6.16V (RD) Will leave for 2 hours
Tuesday, August 22, 2023, 14:07
1853C OMEGA
TGHT = 353 A, 6.2 V (RD)
IGP1= 2.88E-06 Torr
Starting ramp-down at -2A/min
Saturday, August 26, 2023, 09:37
Note: the coating looks really good . The second sintering on the second coating was 2 hours. Will test the coating during graphite material conditioning. |
|
Tuesday, June 14, 2022, 09:04, Darwin Ortiz Rosales, Ta, 37978-1, HP-FEBIAD, Done, TaC coating sintering
|
Tuesday, June 14, 2022, 08:47
Ta HP-FEBIAD was coated with TaC and wrapped with Ta heat-shields (3 layers)
Desired temperature = 1800 C , TBHT will be set fixed at 230A (max).
Evap 2 will be pumped down over previous night
OMEGA slope= 0.990
Good vacuum = 3.00 e-4 Torr
Bad vacuum = 5.00 e-2 Torr
IGP1= 1.2 e-06 Torr
Start autoramp @2A/min to 80 A then autoramp heat @1A/min to 150 A. Then autoramp TGHT to 675A and TBHT to 230A.
Tuesday, June 14, 2022, 08:49
IGP1= 0.13 Torr
*had timed out and it was off. I RST and turned back on.*
Will wait for the pressure to drop to start heating
Tuesday, June 14, 2022, 09:36
IGP1= 9.4e-06 Torr
Start autoramp @2A/min to 80A
Tuesday, June 14, 2022, 11:27
IGP1= 8.7 e-06 Torr Trending down.
TGHT= 146A, 1.6V
TBHT= 146A, 1.7V
Has been ramping at 1A/min
Change ramp rate to 2A/min to 700A on TGHT and 230A on TBHT
Tuesday, June 14, 2022, 14:48
Change final current on TGHT to 675A, according to plot. May change again.
Currently TGHT= 537A, 7.7V
IGP1= 4.4e-06 Torr
Tuesday, June 14, 2022, 18:46
Top temperature was 1825 Celsius at TGHT = 675A
Will start rampdown at 8:00 pm
Tuesday, June 14, 2022, 20:01
TGHT= 675A, 10.3 V
TBHT= 230A, 3V
OMEGA= 1815C
IGP1= 3.9e-06 Torr
ramping down @-2A/min TGHT and -1A/min TBHT |
|
Wednesday, June 29, 2022, 10:12, Darwin Ortiz Rosales, TaC, 44692-10, HP-FEBIAD, Done, TaC coating sintering
|
Wednesday, June 29, 2022, 10:07
Ta HP-FEBIAD was coated with TaC and wrapped with Ta heat-shields (3 layers)
Desired temperature = 1800 C , TBHT will be set fixed at 230A (max).
Evap 2 will be pumped down over previous night
OMEGA slope= 0.990
Good vacuum = 3.00 e-4 Torr
Bad vacuum = 5.00 e-2 Torr
IGP1= 1.2 e-06 Torr
Start autoramp @2A/min to 80 A then autoramp heat @1A/min to 150 A. Then autoramp TGHT to 675A and TBHT to 230A.1
Wednesday, June 29, 2022, 10:13
Chamber isolation performed and no change of pressure observed.
Water leak test performed and no pressure change detected.
Starting ramp up
Wednesday, June 29, 2022, 13:23
Ramping to 675A on TGHT and 230A on TBHT @ 2A/min
Ramped TGHT to 680A, 10.6V and held for 4 hours
Wednesday, June 29, 2022, 21:52
Started rampdown @-2A/min TGHT and -1A/min TBHT |
|
Thursday, September 01, 2022, 12:32, Darwin Ortiz Rosales, TaC, 44691-13, LP-SIS, Done, TaC coating sintering
|
Thursday, September 01, 2022, 10:34
The coated container was wrapped in three Ta foil heatshields.
Target temperature on OMEGA= 1850-1900 C
OMEGA slope:= 0.990
Target time at max temperature = 4 hours
Final Current TBHT= 230A
Final TGHT current= ~420A (adjustable)
Heating autoramp starged at 2A/min on both TGHT and TBHT to 40A
Then at 1A/min on both heaters to 120A.
Good vacuum = 5.0 e-05 Torr
Bad vacuum = 5.0E-04 Torr
Thursday, September 01, 2022, 12:39
Has been stabilizing at 40A on both heaters.
Starting 1A/min autoramp to 80A
A discrepancy between setpoint and readback currents was observed for both TGHT and TBHT. The difference is substancial and warrants investigation. This process will be paused until further notice
Tuesday, September 06, 2022, 14:45
Controls has been troubleshooting EVAP2. In the process TBHT has been damaged. Arthur will take a look at it ASAP and his group will try and fix it tomorrow.
Regarding our initial problem, it appears that when an electrical safety box was installed, the copper water lines connected to output terminals of the power supply, were moved so that they were in contact with the evaporator cage. See the figure below.
Thursday, September 08, 2022, 12:47
Target has been removed and a new test target (HP-FEBIAD) has been placed inside. System left to generate enough vacuum and then testing will be performed.
Friday, September 09, 2022, 15:58
System was tested and all seems good. This coat/sintering will continue after conditioning of graphite material
Saturday, September 24, 2022, 09:13
Continuation of process.
IGP1= 4.3e-07 Torr
ramping @ 1A/min to 230 A on both TGHt and TBHT
Saturday, September 24, 2022, 16:28
ramped to 430A, 7.2V on TGHT and 233A, 4.2V on TBHT. Will leave until 7 pm.
Saturday, September 24, 2022, 19:44
Starting rampdown @-2A/min TGHT -1A/min TBHT
camera offline
IGP1= 1.2e-6 Torr
Monday, September 26, 2022, 09:41
IGP1=2.2e-07 Torr. Shutting off TBHT and TGHT.
Thursday, September 29, 2022, 09:53
Final notes: coating looks good . Probably 3 hours at final temperature is better to prevent material degradation. |
|
Monday, October 17, 2022, 11:32, Darwin Ortiz Rosales, TaC, 45220-2, LP-SIS, Done, TaC coating sintering
|
Monday, October 17, 2022, 10:03
The coated container was wrapped in 4 Ta foil heatshields. (The 4 shields appear to work well)
Target temperature on OMEGA= 1850-1900 C
OMEGA slope:= 0.990
Target time at max temperature = 4 hours
Final Current TBHT= 230A
Final TGHT current= ~420A (adjustable)
Heating autoramp started at 2A/min on both TGHT and TBHT to40A
Then at 1A/min on both heaters to 120A.
Good vacuum = 5.0 e-04 Torr
Bad vacuum = 5.0E-02 Torr
Monday, October 17, 2022, 12:45
Autoramping @4A/min on both TGHT and TBHT to 400 and 30A respectively
Monday, October 17, 2022, 12:56
slowed ramp to 2A/min on both heaters as pressure was increasing too fast. (1A/30s).
Monday, October 17, 2022, 13:30
increased ramp rate to 4A/min on TGHT as TBHT is already at 230A
Monday, October 17, 2022, 14:16
leaving at TGHT : 393A, 6.5V ; TBHT 233A, 4.2V
OMEGA reads 1864C. Will start rampdown at 6:17 pm
Monday, October 17, 2022, 18:16
OMEGA read 1875C at max and now reads 1856C
starting ramp down at -2A/min TGHT and -1A/min TBHT
Final IGP1= 1.4e-06 Torr
Tuesday, October 18, 2022, 09:37
IGP1= 2.72e-7 Torr
Turning heaters off on epics and turning vacuums off. |
|
Tuesday, October 25, 2022, 12:25, Darwin Ortiz Rosales, TaC, 44139-15-SK, LP-SIS, Done, TaC coating sintering
|
Tuesday, October 25, 2022, 12:18
Container wrapped in 4 Ta foil heatshields
Target temperature on OMEGA= 1850-1900 C
OMEGA slope:= 0.990
Target time at max temperature = 4 hours
Final Current TBHT= 230A
Final TGHT current= ~420A (adjustable)
Heating autoramp started at 2A/min on both TGHT and TBHT to40A
Then at 1A/min on both heaters to 120A.
Good vacuum = 5.0 e-04 Torr
Bad vacuum = 5.0E-02 Torr
Wednesday, October 26, 2022, 07:07
IGP1= 7.5e-7 Torr
start ramp at 2A/min to 40A
Ramped at 1A/min to 120A then held until pressure drop. Then ramped @ 4A/min to 400A on TGHT.
Wednesday, October 26, 2022, 14:09
Manually rampted TGHT to 415A, 6.9V will hold for 4 hours
OMEGA reads 1870 C initially
Thursday, October 27, 2022, 09:44
was held for 5 hours due to technical issues but should be ok.
OMEGA @ time of rampdown = 1830C
Rampdown @-2A/min TGHT and -1A/min TBHT
IGP1= 3.5e-07 Torr
|
|
Friday, October 28, 2022, 07:59, Darwin Ortiz Rosales, TaC, 45220-6, LP-SIS, Done, TaC coating sintering
|
Friday, October 28, 2022, 07:58
The coated container was wrapped in four Ta foil heatshields.
Target temperature on OMEGA= 1850-1900 C
OMEGA slope:= 0.990
Target time at max temperature = 4 hours
Final Current TBHT= 230A
Final TGHT current= ~420A (adjustable)
Heating autoramp starged at 4A/min on both TGHT and TBHT to 40A
Then at 1A/min on both heaters to 120A.
Good vacuum = 5.0 e-02 Torr
Bad vacuum = 5.0E-04 Torr
IGP1 initial = 4.5e-07 Torr
Friday, October 28, 2022, 10:50
after reaching 120A and leaving until pressure drop, autoramp at 2.5A/30s (5A/min) towards 400A TGHT and 230A TBHT.
Friday, October 28, 2022, 11:22
OMEGA= 1890 @ 412A, 7.1 V on TGHT
Leaving for 4 hours
|
|
Monday, November 07, 2022, 14:26, Darwin Ortiz Rosales, TaC, 44139-4, TARGET BOAT, Done, TaC coating sintering
|
Monday, November 07, 2022, 14:24
The coated container tube was wrapped in four Ta foil heatshields.
Target temperature on OMEGA= 1850-1900 C
OMEGA slope:= 0.990
Target time at max temperature = 4 hours
Final TGHT current= ~400A (adjustable)
Heating autoramp starged at 4A/min to 40A
Then at 1A/min on both heaters to 120A.
Good vacuum = 5.0 e-02 Torr
Bad vacuum = 5.0E-04 Torr
IGP1 initial = |
|
Thursday, November 10, 2022, 07:40, Darwin Ortiz Rosales, TaC, 45220-13, LP-SIS, Done, TaC coating sintering
|
Thursday, November 10, 2022, 07:40
The coated container was wrapped in four Ta foil heatshields.
Target temperature on OMEGA= 1850-1900 C
OMEGA slope:= 0.990
Target time at max temperature = 4 hours
Final Current TBHT= 230A
Final TGHT current= ~400A (adjustable)
Heating autoramp starged at 4A/min on both TGHT and TBHT to 40A
Then at 1A/min on both heaters to 120A.
Good vacuum = 5.0 e-02 Torr
Bad vacuum = 5.0E-04 Torr
IGP1 initial = 2.8e-07 Torr
Thursday, November 10, 2022, 10:31
TGHT 230A 3.4V and TBHT at 230A , 3.9V
Continue ramp up for TGHT at 4A/min (2A/30s) to 380A
Thursday, November 10, 2022, 11:30
OMEGA =1886 C @ 430A, 7.1V TGHT; will leave for 4 hours
Thursday, November 10, 2022, 15:43
rampdown at -2A/min TGHT and -1A/min TBHT |
|
Thursday, November 17, 2022, 08:14, Darwin Ortiz Rosales, TaC, 44692-12, TARGET BOAT, Done, TaC coating sintering
|
Thursday, November 17, 2022, 08:11
The coated container was wrapped in four Ta foil heatshields.
Target temperature on OMEGA= 1850-1900 C
OMEGA slope:= 0.990
Target time at max temperature = 4 hours
Final Current TBHT= N/A
Final TGHT current= ~400A (adjustable)
Heating autoramp starged at 4A/min on TGHT 40A
Then at 2A/min on both heaters to 120A.
Good vacuum = 5.0 e-02 Torr
Bad vacuum = 5.0E-04 Torr
IGP1 initial = 2.7e-07 Torr
Thursday, November 17, 2022, 10:41
OMEGA=1897C at 358A, 6.0V
Will ramp down at 230 pm
Thursday, November 17, 2022, 14:34
starting rampdown at -2A/min
OMEGA reads 1865C and IGP1=7.6e-07 Torr
|
|
Friday, November 18, 2022, 15:13, Darwin Ortiz Rosales, TaC, 45220-1, LP-SIS, Done, TaC coating sintering
|
Friday, November 18, 2022, 15:08
The coated container was wrapped in four Ta foil heatshields.
Target temperature on OMEGA= 1860-1900 C
OMEGA slope:= 0.990
Target time at max temperature = 4 hours
Final Current TBHT= 230A
Final TGHT current= ~400A (adjustable)
Heating autoramp starged at 4A/min on both TGHT and TBHT to 40A
Then at 2A/min on both heaters to 120A.
Good vacuum = 5.0 e-02 Torr
Bad vacuum = 5.0E-04 Torr
leaving to pressure down over weekend
Sunday, November 20, 2022, 12:11
start heatup IGP1=1.63e-07 Torr
Sunday, November 20, 2022, 14:21
OMEGA= 1900 at 395A, 6.6V on TGHT
Will leave until 6;20 pm |
|
Tuesday, November 22, 2022, 14:59, Darwin Ortiz Rosales, TaC, 45220-12, LP-SIS, Done, TaC coating sintering
|
Tuesday, November 22, 2022, 14:58
The coated container was wrapped in four Ta foil heatshields.
Target temperature on OMEGA= 1860-1900 C
OMEGA slope:= 0.990
Target time at max temperature = 4 hours
Final Current TBHT= 230A
Final TGHT current= ~400A (adjustable)
Heating autoramp starged at 4A/min on both TGHT and TBHT to 40A
Then at 2A/min on both heaters to 120A.
Good vacuum = 5.0 e-02 Torr
Bad vacuum = 5.0E-04 Torr
leaving to pressure down.
Wednesday, November 22, 2022, 19:10
OMEGA = 1942 C @ 396A on TGHT
lowered to 386A to 1900 and left for 4 hours.
After four hours, started rampdown at-2A/min TGHT and -1A/min TBHT
|
|
Thursday, February 23, 2023, 18:24, Darwin Ortiz Rosales, TaC, 45441-2, HP-FEBIAD, Done, TaC coating sintering
|
Thursday, February 23, 2023, 18:20
Ta HP-FEBIAD was coated with TaC and wrapped with Ta heat-shields (3 layers) and 1 under layer that doesn't cover the middle section.
Desired temperature = 1800 C , TBHT will be set fixed at 230A (max).
Evap 2 will be pumped down to 5e-06 Torr range
OMEGA slope= 0.990
Good vacuum = 5.00 e-4 Torr
Bad vacuum = 5.00 e-2 Torr
IGP1=2.5 e-06 Torr
Start autoramp @1A/min to 80 A then autoramp heat @1A/min to 150 A. Then autoramp TGHT to approx 675A and TBHT to 230A.1
Friday, February 24, 2023, 09:10
heated overnight @0.5 A/min to 400 A. Then started heating at 1A/min to 600 A while taking readings for current/Temp regression.
regression so far points to 682A to get to 1800C. Will continue taking readings and possible heat to 1850 C.
Friday, February 24, 2023, 09:43
autoramping to 690A at 1A/min
Friday, February 24, 2023, 11:24
ramping manually to 690A from 650A
Friday, February 24, 2023, 11:32
4 hours at 330pm
TGHT 492A, 10.6V
TBHT = 230A, 3.2V
IGP1=5.11e-06 Torr
OMEGA =1840 C
Friday, February 24, 2023, 15:36
TGHT = 692A, 10.6V
TBHT = 230 A, 3.2V
OMEGA = 1835 C
IGP1= 2.4e-06 Torr
Starting rampdown at -2A/min TGHT and -1A/min TBHT |
|