 Monday, June 09, 2014, 13:56, Cameron Hodgins, , , TARGET BOAT, In progress, Sintering several carbides on tantalum foil backing
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Manually changed current from 500 to 615 A, monitoring the temperature. Temperature went from 1657 C up to 1838 C. Pressure increased up to 7.2e-7 T.
Samples should be left for about 4 hours (615 A started just before 13:00), then the goal is to ramp current back to zero. |
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Friday, June 06, 2014, 16:01, Cameron Hodgins, , , TARGET BOAT, In progress, Sintering several carbides on tantalum foil backing
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Auto-ramp started. Max current = 500 A, voltage = 11.05 V. Current is being increased at 2 A/min. In the first 20 minutes, the pressure went up to about
10E-6 T, but has slowly decreased since then. Everything looks ok. The system will be left until Monday morning (June 9th). |
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Friday, May 30, 2014, 13:15, Cameron Hodgins, , , , In progress, Sintering several carbides on tantalum foil backing
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Pressure down to 7.1e-7 Torr. Water valve to heat shield was opened; pressure remained stable.
Current turned up to 40 A for now. Will increase at 2 A/min up to 500 A over the weekend, then on Monday we will turn it up to 600 A and
check the temperature. |
Thursday, May 29, 2014, 18:16, Cameron Hodgins, , , TARGET BOAT, In progress, Sintering several carbides on tantalum foil backing 
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Purpose: Sinter one sample of each of TiC, VC, Cr3C2, ZrC, NbC, Mo2C, TaC, and WC on 5x10 mm tantalum foil to see if the samples are usable for SEM.
Samples were prepared using a solution of PEG (2.56 g), PVB (2.45 g), paraffin oil (1.12 g), MEK (15 mL), and EtOH (23 mL). Slurries made using
0.0013 mol of each carbide with ~230 uL of the solution. Applied via paintbrush onto 5x10 mm tantalum foil. |
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Thursday, April 24, 2014, 18:13, John Wong, , , TARGET BOAT, Done, Tests: Sintering carbon Mesh coated with WC
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Thursday, April 24, 2014, 17:25
The purpose of this experiment is to see if the carbon mesh is suitable for coating and sintering with uranium carbide. For this test, the
mesh is coated with WC slurry (previously prepared). |
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Thursday, March 27, 2014, 18:04, John Wong, , , TARGET BOAT, In progress, Studying WC sintering on Ta surface
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Thursday, March 27, 2014, 17:38
TEST #1
WC slurry was prepared in non-aqueous environment (see lab book for procedures). The solution was dripped on two Ta plates (3.1cm2) and let |
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Friday, March 21, 2014, 16:18, John Wong, TiC, 38817-8, HP-SIS, In progress, Sintering TiC
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Friday, March 21, 2014, 16:09
Target container is loaded with 360 Discs of TiC.
Target length = 11.7cm. |
 Wednesday, March 26, 2014, 11:07, Laura Lambert, TiC, 38817-8, HP-SIS, In progress, Sintering TiC
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John Wong wrote:
Friday, March 21, 2014, 16:09 |
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Wednesday, March 26, 2014, 18:23, John Wong, TiC, 38817-8, HP-SIS, Done, Sintering TiC#4
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Laura Lambert wrote:
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Monday, March 10, 2014, 11:52, John Wong, , , , Problems resolved, The Chiller is down
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Monday, March 10, 2014, 11:45
The chiller tripped off on March 7, 2014.
Water is not flowing into the chiller; paddle wheel shows no signal.
Tried turning on the chiller locally; a few seconds |
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Monday, March 10, 2014, 11:45, John Wong, , , , Maintenance, Replaced Backing Pump hose
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Monday, March 10, 2014, 11:44
Rick replaced the backing pump hose from 1.5" to 2.0" for better flow. And the HEPA filter was checked - it looks OK.
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Friday, March 07, 2014, 11:46, Laura Lambert, , 40282-3, TARGET BOAT, In progress, Sintering TaC coated end caps
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Friday, March 07, 2014, 11:41
The target container end-caps were sintered previously, but did not fully complete the sintering process [See elog entry # 119 EVAP2]
The caps are inserted in the target boat wrapped in graphite foils with 3 x Ta-heat shields. |
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Friday, March 07, 2014, 22:25, John Wong, , 40282-3, TARGET BOAT, Problems, Sintering TaC coated end caps
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Laura Lambert wrote:
Friday, March 07, 2014, 11:41 |
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Friday, March 07, 2014, 10:34, Anders Mjos, , , , Problems resolved, TGHT2 water flow signal
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There was no signal going from the coils to the PLC. After manipulating the connection points on the coil a signal could again be established. Frequency
is ~ 40Hz. |
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Tuesday, February 25, 2014, 16:10, Laura Lambert, , 40282-3, TARGET BOAT, Done, Sintering TaC coated end caps
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Tuesday, February 25, 2014, 16:08
The target containers end-caps were coated with TaC spray and let dry.
The caps are inserted in the target boat vertically with no heat shield and no graphite foil. |
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Tuesday, February 18, 2014, 12:19, Laura Lambert, Empty, 40282-3, TARGET BOAT, Done, Sintering Ta target boat with TaC coating
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Tuesday, February 18, 2014, 12:12
A new target boat was sprayed with TaC coating and let dry.
The target boat is NOT wrapped with Ta-heat shield. |
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Tuesday, February 11, 2014, 13:49, Laura Lambert, Empty, 38817-8, HP-SIS, Done, Sintering TaC coating container for TiC
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Tuesday, February 11, 2014, 13:43
Target container is coated with TaC and wrapped with 3-Ta heat shields.
TGHT and TBHT will be ramped up to 820A and 300A, respectively. |
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Friday, January 31, 2014, 12:10, Laura Lambert, Empty, 39165-10, LP-SIS, Done, Sintering TaC coating container for Ta?
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Friday, January 31, 2014, 11:28
Target container is coated with TaC.
The container is wrapped with 3 x Ta heat-shield. |
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Tuesday, January 28, 2014, 15:46, Laura Lambert, , 40282-4, TARGET BOAT, Failed, Sintering TaC coated end caps
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Tuesday, January 28, 2014, 15:43
The target containers end-caps were coated with TaC spray and let dry.
Each cap is wrapped with a small piece of graphite foil and inserted in the target boat. [see attached photo] |
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Monday, January 20, 2014, 16:35, Laura Lambert, Empty, Ta-Target boat, , , Sintering Ta target boat with TaC coating
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Monday, January 20, 2014, 16:32
A new target boat was sprayed with TaC coating and let dry this morning.
The target boat is NOT wrapped with Ta-heat shield. |
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Tuesday, January 21, 2014, 11:33, Laura Lambert, Empty, 40282-4, TARGET BOAT, , Sintering Ta target boat with TaC coating
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Laura Lambert wrote:
Monday, January 20, 2014, 16:32 |
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Tuesday, January 21, 2014, 11:56, Laura Lambert, Empty, 40282-4, TARGET BOAT, , Sintering Ta target boat with TaC coating
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Laura Lambert wrote:
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Wednesday, January 22, 2014, 09:49, Laura Lambert, Empty, 40282-4, TARGET BOAT, , Sintering Ta target boat with TaC coating
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Laura Lambert wrote:
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Wednesday, January 22, 2014, 13:46, Laura Lambert, Empty, 40282-4, TARGET BOAT, , Sintering Ta target boat with TaC coating
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Laura Lambert wrote:
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Wednesday, January 22, 2014, 15:13, John Wong, Empty, 40282-4, TARGET BOAT, , Sintering Ta target boat with TaC coating
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Laura Lambert wrote:
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Wednesday, January 22, 2014, 18:22, John Wong, Empty, 40282-4, TARGET BOAT, Problems, Sintering Ta target boat with TaC coating (IEVAP2:TBHT2 water signal problem)
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John Wong wrote:
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Thursday, January 23, 2014, 16:22, Laura Lambert, Empty, 40282-4, TARGET BOAT, Problems resolved, Sintering Ta target boat with TaC coating
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John Wong wrote:
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Friday, January 24, 2014, 14:25, Laura Lambert, Empty, 40282-4, TARGET BOAT, In progress, Sintering Ta target boat with TaC coating
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Laura Lambert wrote:
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Monday, January 27, 2014, 10:59, Laura Lambert, Empty, 40282-4, TARGET BOAT, In progress, Sintering Ta target boat with TaC coating
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Laura Lambert wrote:
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Tuesday, January 28, 2014, 11:57, Laura Lambert, Empty, 40282-4, TARGET BOAT, In progress, Sintering Ta target boat with TaC coating
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Laura Lambert wrote:
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Tuesday, January 28, 2014, 13:09, Laura Lambert, Empty, 40282-4, TARGET BOAT, Done, Sintering Ta target boat with TaC coating
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Laura Lambert wrote:
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Wednesday, January 15, 2014, 17:45, John Wong, Empty, 39165-9, LP-SIS, In progress, Sintering TaC coating container
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Wednesday, January 15, 2014, 17:30
Target container is coated with TaC. No Ta-heat shields are used.
TGHT will be ramped up to 580A at 0.2A/min. |
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Thursday, January 16, 2014, 13:06, Laura Lambert, Empty, 39165-9, LP-SIS, In progress, Sintering TaC coating container
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John Wong wrote:
Wednesday, January 15, 2014, 17:30 |
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Friday, January 17, 2014, 09:34, John Wong, Empty, 39165-9, LP-SIS, In progress, Sintering TaC coating container
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Laura Lambert wrote:
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Friday, January 17, 2014, 10:18, Laura Lambert, Empty, 39165-9, LP-SIS, In progress, Sintering TaC coating container
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John Wong wrote:
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Friday, January 17, 2014, 12:52, John Wong, Empty, 39165-9, LP-SIS, In progress, Sintering TaC coating container
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Laura Lambert wrote:
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Monday, January 20, 2014, 16:30, Laura Lambert, Empty, 39165-9, LP-SIS, Done, Sintering TaC coating container
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John Wong wrote:
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Thursday, November 07, 2013, 09:38, Anders Mjos, , , , Problems resolved, Heat Shield cooling line twisted
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See attached photo.
The Heat Shield has been taken to the Machine Shop for repair.
Friday, November 08, 2013 |
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Wednesday, November 06, 2013, 17:36, John Wong, TaC, Target Boat #2, , In progress, Testing TaC matrix coating
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The purpose of this experiment is to improve the TaC coating mixed with other metals as additives. The coating solution will be sprayed on Ta metal
(0.015" thick, same thickness as the target container).
The samples will be sintered at ~ 1800C. Once the process is completed, a graphite tube will be inserted into the tube, and then re-heated |
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