| 摘要 |
The rare earth metals production process produces powder of average grain size below 20 mu m of zirconium, titanium or hafnium by metallic thermal reduction of oxides or halogenides. A passivating gas is added during and/or after the reduction to stabilize the powder. A passivating solid is supplied before the reduction. Reduction and stabilization take place in a single vacuumable gastight reaction vessel. |
