[labnetwork] furnace boat question

[Mark Cooper]

Hello Richard,
We often build different boat designs for different processes, so that its obvious what boat goes with what process. Shell and rail boats can achieve the same process results, but appear completely different.

It is more difficult to do this with automated boat loading mass transfer tools, but for hand loaded its relatively easy.

We also do this from time to time with silicon carbide paddles, 2 inch square handle for oxide, and1.75 or 1.25 square for anneal.

Scribe is fine, but the boats (any quartz) should be annealed at 1175 for 8 hours to relieve the stress. The anneal is part of the process when we manufacture boats with the various suppliers.

I am glad to review boats and quartz offline.


[Expertech]
Mark Cooper
General Manager
10 Victor Square Ste 100
Scotts Valley Ca 95066
831 440 4422 direct
831 439 9300 office
831 332 9396 mobile
markc at exper-tech.com



From: labnetwork-bounces at mtl.mit.edu <labnetwork-bounces at mtl.mit.edu> On Behalf Of Morrison, Richard H., Jr
Sent: Friday, May 31, 2019 6:57 AM
To: labnetwork at mtl.mit.edu
Subject: [labnetwork] furnace boat question

HI Everyone,

We are having an issue controlling the quartz boats for our furnace operations. We use 4" and 6" boats with 2 different slot widths. DO you think we could lightly scribe a tube number and size on the rail of the boat? I am concerned that it would crack.

Rick


Richard H. Morrison
Principal Member of the Technical Staff
Draper
555 Technology Square
Cambridge, MA
02139-3573

Work  617-258-3420
Cell  508-930-3461
www.draper.com<http://www.draper.com>

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