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HI Cliff,
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<div class=""> I had the same problem a few years ago using the evaporator at UNC Chapel Hill. We were using a graphite crucible and the aluminum would creep up the side and I think the surface tension of the metal would break the crucible as it cooled -
after a few cycles. I talked the guys over at Kamis (NY) and I don’t recall the crucible liner we bought from them now (some boron alloy in conjunction with graphite spacers?) but it worked (haven’t heard of a break). I would talk to them if you haven’t done
so already.</div>
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<div class="">Best, </div>
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<div class="">Felix</div>
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<div class="">On May 31, 2016, at 12:11 PM, Clifford F Knollenberg <<a href="mailto:cknollen@stanford.edu" class="">cknollen@stanford.edu</a>> wrote:</div>
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<p class="">Hi All,</p>
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<p class="">We've been having crucible cracking issues with out Al e-beam evaporation source. In short it cracks its crucible after just a few uses. This wasn't so bad when it happened ever 4-5 months, but not its happening about every week or two. I've
tried a variety of crucibles, had the most luck with carbon crucible. Is there anything else out there we should be trying?</p>
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<p class="">Cheers,</p>
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<p class="">Cliff</p>
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<p class="">Clifford Knollenberg</p>
<p class="">Science & Engineering Associate</p>
<p class="">Stanford Nano Shared Facilities (SNSF)</p>
<p class="">Email: <a href="mailto:cknollen@stanford.edu" class="">cknollen@stanford.edu</a>
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<p class="">Tel: 650-723-1675<br class="">
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Felix Lu, Ph.D.</div>
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