 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 |
 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 |
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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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. |
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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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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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Monday, June 09, 2014, 17:15, Cameron Hodgins, , , TARGET BOAT, In progress, Sintering several carbides on tantalum foil backing
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| Target boat is now being cooled at 1 A/min from the starting point (616 A) down to 0 A. |
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Friday, June 13, 2014, 14:57, Laura Lambert, Ta, 40282-2, LP-SIS, In progress, Conditioning Ta#43 target
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Friday, June 13, 2014, 14:53
Container is filled with 400 discs of Ta foils; target length = 5.2cm;
Total mass ( Ta foils + wire) = 45.92g |
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Monday, June 16, 2014, 17:42, John Wong, Ta, 40282-2, LP-SIS, In progress, Conditioning Ta#43 target
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Laura Lambert wrote:
Friday, June 13, 2014, 14:53 |
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Friday, June 20, 2014, 12:01, Laura Lambert, SiC, 39530-8, HP-FEBIAD, In progress, Conditioning SiC#31 target
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Friday, June 20, 2014, 11:14
Made from batch's: oct 23/2013, oct 31/2013 and june 2012
Total number of foils: 515 discs |
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Friday, June 20, 2014, 16:22, John Wong, SiC, 39530-8, HP-FEBIAD, In progress, Conditioning SiC#31 target
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Laura Lambert wrote:
Friday, June 20, 2014, 11:14 |
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Monday, June 23, 2014, 09:47, Laura Lambert, SiC, 39530-8, HP-FEBIAD, In progress, Conditioning SiC#31 target
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John Wong wrote:
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Tuesday, June 24, 2014, 23:57, John Wong, SiC, 39530-8, HP-FEBIAD, In progress, Conditioning SiC#31 target
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Laura Lambert wrote:
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Wednesday, July 23, 2014, 15:07, John Wong, Empty, 40282-3, LP-SIS, In progress, Sintering TaC coated target container
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Wednesday, July 23, 2014, 15:07
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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Monday, July 28, 2014, 15:06, Laura Lambert, , 40282-3, LP-SIS, In progress, Sintering ZrC# 6 target
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Monday, July 28, 2014, 14:41
Total number of foils: 445 discs
Total mass of materials [incl graphite foils]: 49.027 g |
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Tuesday, July 29, 2014, 11:23, John Wong, , 40282-3, LP-SIS, In progress, Sintering ZrC# 6 target
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Laura Lambert wrote:
Monday, July 28, 2014, 14:41 |
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Friday, August 01, 2014, 11:47, Peter Kunz , , 40282-3, LP-SIS, In progress, ZrC #6 conditioning
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The maximum current of 580A was reached at 9:15.
TGHT:RDCUR 578 A
TGHT:RDVOL 9.87 V |
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Friday, August 01, 2014, 13:27, Peter Kunz , , 40282-3, LP-SIS, In progress, ZrC #6 conditioning
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Target was conditioned for 4 hours at 580A.
Initiating ramp-down sequence @ 2A/min
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Tuesday, August 05, 2014, 13:13, Laura Lambert, Empty, , TARGET BOAT, In progress, Sintering TaC coated end caps
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Tuesday, August 05, 2014, 12:02
The target container end caps were coated with TaC spray and let dry.
The caps are inserted in the target boat vertically, wrapped in graphite foil with 3 x Ta-heat shield. [see attached photo] |
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Tuesday, August 05, 2014, 17:20, John Wong, , , TARGET BOAT, In progress, Sintering TaC coated end caps
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Laura Lambert wrote:
Tuesday, August 05, 2014, 12:02 |
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