K.C.,

It matters because in some cases materials are simply incompatible at high
temperature.  For example, you wouldn't want to evaporate silver out of a copper
crucible because the materials would form an alloy and your silver source would
be contaminated with copper.

This site has a pretty extensive set of tables:

http://www.lesker.com/newweb/menu_depositionmaterials.cfm?section=MDtable&init=s
kip

Dan

-----Original Message-----
From: mems-talk-bounces@memsnet.org [mailto:mems-talk-bounces@memsnet.org] On
Behalf Of l j
Sent: Friday, October 23, 2009 1:50 PM
To: mems-talk@memsnet.org
Subject: [mems-talk] reference for what cricible to use for e-beam

Hello group,

Could anyone point me to a reference for what kind of crucible should be used to
e-beam a given material. I haven't found much on-line to my surprise.

The deeper question then, is there a reference for why it matters. From
experience I have found some materials behave better in moly versus graphite,
but to doesn't seem to be directly or only related to the melting point of the
material.

Thank you in advance.

K.C.