Crucible Selection:
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Material | T °C Melting P. | T °C 10-4 Torr | Al2O3 | PBN | PG | Ta | Remarks |
Silver | 961 | 832 | |||||
Barium | 729 | 462 | Forms alloys with ceramics | ||||
BaF2 | Use a slow heating | ||||||
Boron | 2027 | 1707 | |||||
CaF2 | Use a slow heating | ||||||
Cerium | 798 | Forms borides | |||||
CeF3 | Use a slow heating | ||||||
Chromium | 1857 | 1157 | Violent reaction with PBN | ||||
Cobalt | 1495 | 1257 | Very reactive with PBN at 1 500°C | ||||
Copper | 1084 | 1027 | |||||
Dysprosium | 1409 | 897 | |||||
Erbium | 1522 | 947 | |||||
Gadolinium | 1312 | ||||||
Germanium | 937 | 1137 | Wets refractories | ||||
Iron | 1536 | 1227 | Violent reaction with PBN | ||||
Lanthanum | 920 | 1422 | |||||
Lutecium | 1663 | Sublimes | |||||
Neodymium | 1016 | ||||||
Nickel | 1453 | 1262 | Reacts with PBN at 1 000°C | ||||
Niobium | 2467 | 2277 | |||||
Gold | 1064 | 1132 | |||||
Palladium | 1552 | 1192 | |||||
Platinum | 1772 | 1747 | Reacts with PBN at 1 500°C | ||||
Rhodium | 1963 | 1707 | |||||
Scandium | 1541 | 1107 | |||||
Silicon | 1412 | 1337 | Slow reaction with PBN | ||||
Terbium | 1357 | ||||||
Titanium | 1670 | 1442 | Forms TiB2 with PBN | ||||
Vanadium | 1902 | ||||||
Yttrium | 1526 | 1332 |
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