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Message ID: 683     Entry time: Monday, March 10, 2025, 09:56
Author: Darwin Ortiz Rosales 
Target Material: Empty 
Target Oven W.O#: 45447-3 
Source: HP-FEBIAD 
Status: In progress 
Subject: TaC coating sintering 

Monday, March 10, 2025, 09:50

The coated container was wrapped in 4 Ta foil heatshield and left in evap2  over weekend to decrease pressure.

Target temperature on OMEGA= 1850-1900 C

OMEGA slope:= 0.990

Target time at max temperature = 4 hours

Final Current TBHT= 230 A

Final TGHT current= ~650A (adjustable)

Heating autoramp starged at 2A/min on  TGHT  and TBHT to 120A

Then at 2 A/min  to =400 A TGHT and 230A TBHT

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

Initial IGP1=


 Monday, March 10, 2025, 10:36

Initial IGP1= 8.5 e-06 torr

Starting ramp to 120A for both TGHT and TBHT


Monday, March 10, 2025, 16:57

RD TGHT =686A set to 700A, 10.8V

TBHT = 230A, 3.1V

OMEGA= 1710

Will leave for 4 hours


 Monday, March 10, 2025, 20:42

IGP1=7.9e-06 Torr

OMEGA= 1750 C

TGHT = 686 A, 10.8V

TBHT= 230A, 3.1 V

starting rampdown at -2A/min TGHT and -1A/min TBHT

 

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