Dear Zhu,

Alumina coated tungsten boats lasts longer than simple tungsten boats
for Ni evaporation.  They are available from Kurt J. Lesker.

Oray Orkun Cellek

> Re:   I am using E-beam to evaporate Ni. The crucible is
> Re:made of tungsten. But it seemed that fused Ni could
> Re:"eat" tungsten. I wonder whether they have formed some
> Re:kind of alloys. Should I replace the tungsten crucible
> Re:by other metals, such as molybdenum? Thank you very
> Re:much.