5. Select sample container

Reactivity, strength, cost, ductility all important

a) Ceramic refractories (crucibles and boats)

Al₂O₃ - 19500°C

ZrO₂/Y₃O₃ - 2000°C

b) Precious Metals (crucibles, boats and tubes)

Pt - 1770°C

Au - 1063°C

Ag - 960°C

Ir - 2450°C

c) Sealed Tubes

SiO₂ - Quartz

Au, Ag, Pt

Nb , Ta, Mo, W