 Tuesday, August 18, 2020, 09:26, Marla Cervantes, TaC, 44489-15, TARGET BOAT, Done, TaC coating/sintering
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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 |
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Tuesday, August 18, 2020, 10:41, Marla Cervantes, TaC, 44489-11, , Done, TaC coating/sintering
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Thursday, August 19, 2020, 17:28
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 |
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Saturday, August 22, 2020, 11:44, Marla Cervantes, , 44489-11, , Done, C-Cartridge test#1
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Saturday, August 22, 2020, 11:41
A Ta short tube was coated with TaC and sintered, then it was loaded with a c-cartridge
Now is currently under vacuum and it will be heated to 2000 °C during 3 days |
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Wednesday, August 26, 2020, 10:27, Marla Cervantes, , 44489-8, , Done, C-Cartridge test #2
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Wednesday, August 26, 2020, 10:26
A Ta short tube was loaded with a C-cartridge
Currently, the tube is under vacuum and it will be heated to 2000 °C during 3 days. |
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Sunday, August 30, 2020, 18:28, Marla Cervantes, Empty, 44489-13, , Done, TaC coating/sintering
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Sunday, August 30, 2020, 06:47
A short tantalum tube was coated with TaC and wrapped with 3 layers of Ta,
a Ta cap was inserted to the end of the tube to be able to measure the temperature during heating |
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Monday, August 31, 2020, 12:57, Marla Cervantes, , 44489-15 , , Done, TaC coating heating test
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Monday, August 31, 2020, 12:23
A short naked Ta tube (no heat shielding), previously coated with TaC was set under vacuum,
and it will be kept at 2000 °C for 3 days to later identify the TaC's carbon penetration. |
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Saturday, September 05, 2020, 21:33, Marla Cervantes, Empty, , , Done, Pristine Ta tube calibration
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Saturday, September 05, 2020, 12:56
A Ta tube was wrapped with 3 tantalum foils,
a tantalum cap was inserted in both sides of the Ta tube, the caps weren't sealed. |
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Thursday, September 17, 2020, 16:11, Marla Cervantes, Empty, 44139-9, LP-SIS, Done, TaC coating/sintering
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Thursday, September 17, 2020, 16:10
An LP-SIS was wrapped with 3 Ta layers, and installed in the EVAP2
Desired temperature= 1900 C, Omega Slope = 0.990 |
Monday, September 21, 2020, 17:01, Marla Cervantes, , 44139-8-SK, TARGET BOAT, Done, Conditioning graphite target #3 
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Monday, September 21, 2020, 16:50
450 graphite foils coated with graphite slurry were loaded in a tantalum tube, the tantalum tube was wrapped with 3 Ta heat shields and installed
in the EVAP, to measure the temperature, a pack of 4 Ta foils were inserted in each side of the tube. |
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Tuesday, November 24, 2020, 12:56, Marla Cervantes, , 44139-8-SK , TARGET BOAT, Done, Graphite casting conditioning
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Tuesday, November 24, 2020, 09:23
A batch of 60 discs of 18 mm diameter were loaded in a tantalum tube. The tantalum tube was wrapped with 3 layers of Ta foil for heat shielding
and mounted in the EVAP2. EVAP2 pumped down overnight and Aaron made a leak test this morning (elog 524). |
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Thursday, February 11, 2021, 10:57, Marla Cervantes, , NA, , Done, Re coating Test 1
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Thursday, February 10, 2021, 12:00
Objective: Heat a Re wire to evaporate it and deposit a layer of Re on the inner surface of a Ta tube.
A Re wire of 1mm diameter was clamped with Cu brackets in EVAP2, the wire is partially enclosed in a Ta tube. EVAP2 pumping down |
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Tuesday, February 23, 2021, 08:59, Marla Cervantes, , NA (Cu-tube), , Done, Re coating Test 2
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Tuesday, February 23, 2021, 08:49
Yesterday a heat shield was washed and when dry it was installed in the EVAP2,
A 1mm thick rhenium wire was held within two copper brackets to pass through a Cu tube with the intention of coating its inside face |
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Tuesday, March 23, 2021, 11:28, Marla Cervantes, Empty, 44489-6, , Done, Re-coating test 3
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Objective: Coating the inner surface of a short tantalum boat with rhenium.
Result:
The wire snnaped around 376 W (53 A, and 7.09 V) and 2170 °C (measured with filament pyrometer)
The tube does not |
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Thursday, March 25, 2021, 11:24, Marla Cervantes, Empty, NA (Cu-Tube, , Done, Re-coat test 4
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Objective: Coating the inner surface of a short tantalum tube with rhenium.
Result:
The wire snnaped around 376 W (53 A, and 7.09 V) and 2170 °C (measured with filament pyrometer)
The tube is coated
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Friday, March 26, 2021, 13:58, Marla Cervantes, Empty, 44489-6, , Done, Re-coat 1
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Friday, March 26, 2021, 13:55
Yesterday a heat shield was installed in the EVAP2.
A 1mm thick rhenium wire was held within two copper brackets to pass through a Cu tube with the intention of coating its inside face. |
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Friday, March 26, 2021, 16:23, Marla Cervantes, Empty, 44489-7, , Done, Re-coat 2
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Objective: Coating the inner surface of a tantalum tube to make a destructive test and use a reference for the tantalum boats coatings
Results:
Sunday, March 27, 2021, 11:23 |
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Sunday, March 28, 2021, 11:24, Marla Cervantes, , NA (Ta-tube), , Done, Re-coat 3
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Objective: Coating the inner surface of a tantalum tube to make a destructive test and use a reference for the tantalum boats coatings
Results: The tube was coated
Sunday, March 28, 2021, 11:23 |
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Tuesday, April 13, 2021, 10:44, Marla Cervantes, Empty, NA (Ta- tube Eagle Alloys), , Done, Re-coat 4
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Tuesday, April 13, 2021, 09:51
IGP1 = 2.5e-7 Torr
Tuesday, April 13, 2021, 10:17 |
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Thursday, April 15, 2021, 18:33, Marla Cervantes, Ta, 44139-6-SK, TARGET BOAT, Done, Carbon penetration on Ta
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Thursday, April 15, 2021, 18:24
Tantalum samples were loaded in a tantalum testing tube and installed in the EVAP2 to heat under vacuum for 3 days at 2000 degC (~500A, 4kW).
The temperature is measured with the Omega pyrometer (slope 0.98) |
 Thursday, August 08, 2024, 11:17, Marla Cervantes, C, 44139-5 SK, LP TUBE, Done, Graphite foils conditioning
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Aaron Schmidt wrote:
Wednesday, August 07, 2024, 15:36: Roughing. Had initially been roughed & TP started w/ Marla CS, |
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