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Entry  Monday, June 22, 2015, 13:11, John Wong, Empty, 38817-6, HP-SIS, In progress, RUSH! Sintering TaC coated container for SiC  
    Reply  Tuesday, June 23, 2015, 10:18, Laura Lambert, Empty, 38817-6, HP-SIS, Done, RUSH! Sintering TaC coated container for SiC  
Message ID: 220     Entry time: Tuesday, June 23, 2015, 10:18     In reply to: 219
Author: Laura Lambert 
Target Material: Empty 
Target Oven W.O#: 38817-6 
Source: HP-SIS 
Status: Done 
Subject: RUSH! Sintering TaC coated container for SiC  

John Wong wrote:

Monday, June 22, 2015, 13:00

Containers is coated with TaC. Wrapped with 3 layers of Ta heat-shield.  Air blown to for quick dry.

Installed, and pumped down, vac currently at 6.7e-6 Torr. 

HS water valve open, no leaks detected. 

Stepping up TGHT/TBTH:  50A.


 Monday, June 22, 2015, 14:22

Pressure is coming down, currently at 1.75e-5 Torr.

auto-ramping initiated: TGHT = 820A; TBHT = 230A, rate at 2A/min.


 Tuesday, June 23, 2015, 00:50

Target container has reached to 1860C and has been heated for almost 4 hours, with TGHT at 800A/12.60V, DV = 6.28. TBHT at 230A/3.8V.  

Vac at 3e-6 Torr.  

Cooling down at 2A/min.  

Chamber can be vented tomorrow and SiC can be loaded in for the sintering process. 


 

 Tuesday, June 23, 2015, 10:17

vented in air and opened up this morning.

coating looks good.

loading container now...


 

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