the wetting behavior of Ni on a HfB2/Ta assembly was examined in vacuum using dense HfB2 (99.5% purity) produced, without sintering aids, by HP-HT at 7 GPa. The real-time imaging by a high resolution digital camera and precise temperature control demonstrated solid-state Ni/HfB2 interaction resulòting in metal contact melting at 1300°C. Ongoing heating, the in situ formed Ni-B alloys wets, spreads over HfB2 and penetrates the HfB2/Ta capillary interface to form a joint of complex graded structure and good bonding.
Wetting and joining of HfB2 and Ta with Ni
A Passerone;F Valenza;M L Muolo;
2010
Abstract
the wetting behavior of Ni on a HfB2/Ta assembly was examined in vacuum using dense HfB2 (99.5% purity) produced, without sintering aids, by HP-HT at 7 GPa. The real-time imaging by a high resolution digital camera and precise temperature control demonstrated solid-state Ni/HfB2 interaction resulòting in metal contact melting at 1300°C. Ongoing heating, the in situ formed Ni-B alloys wets, spreads over HfB2 and penetrates the HfB2/Ta capillary interface to form a joint of complex graded structure and good bonding.File in questo prodotto:
| File | Dimensione | Formato | |
|---|---|---|---|
|
prod_62418-doc_4118.pdf
non disponibili
Descrizione: WETTING and JOINING of HfB2 and Ta with Ni
Dimensione
479.74 kB
Formato
Adobe PDF
|
479.74 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
