Crucibles for melting titanium alloys

• Main Authors: KELLY, THOMAS JOSEPH, BEWLAY, BERNARD PATRICK, RUTKOWSKI, STEPHEN FRANCIS, WUKUSICK, JOSEPH CARL, WEIMER, MICHAEL JAMES, GIGLIOTTI, MICHAEL FRANCIS XAVIER, ELLIS, BRIAN MICHAEL, RAHMANE, MOHAMED
• Format: Patent
• Language: Chinese; English
• Published: 16.03.2009
• Subjects: ALLOYS; BLASTING; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE; FERROUS OR NON-FERROUS ALLOYS; FURNACES; FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; KILNS; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; OPEN SINTERING OR LIKE APPARATUS; OVENS; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; RETORTS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WEAPONS

Crucibles (8) for melting titanium alloys having a facecoat (16) including at least one facecoat layer (18) containing an oxide selected from scandium oxide, yttrium oxide, hafnium oxide, a lanthanide series oxide, and combinations thereof, and a backing (22) including at least one backing layer (24) where the crucible (8) has a backing (22) to facecoat (16) thickness ratio of from 6.5 : 1 to 20 : 1.