Tantalum and Molybdenum Brazing Techniques

Technical Report · Mon Aug 31 20:00:00 EDT 1964

DOI:https://doi.org/10.2172/4615423· OSTI ID:4615423

Freedman, A. H. ^[1]; Stone, L. H. ^[1]; Mikus, E. B. ^[1]

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1. Northrop Corporation, Hawthorne, CA (United States). Norair Div.

Brazed molybdenum and tantalum alloy honeycomb structures offer good potential for structural and heat shield applications in the 2500-3500 F range. However, molybdenum is seriously embrittled at braze temperatures above approximately 2500F. Tantalum alloys are not embrittled by high braze temperatures, but there are serious production problems associated with braze temperatures above 3200F. The purpose of this program was to develop molybdenum and tantalum braze systems which braze at relatively low temperatures, but develop high remelt and service temperatures. Some attention was also directed to the development of braze alloys for tantalum that braze several hundred degrees above the expected service temperature. Most of the effort was based on TZM molybdenum alloy and Ta-10W alloy. Some work was performed using Ta-8W-2Hf and Ta-30Cb-7.5V.

• Research Organization: Northrop Corporation, Hawthorne, CA (United States). Norair Div.
• Sponsoring Organization: US Air Force
• NSA Number: NSA-19-030690
• OSTI ID: 4615423
• Report Number(s): ML-TDR--64-270; AD--606576
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALLOYS
BORIDES
BORON COMPOUNDS
BRAZING
BRAZING
HONEYCOMB CORES
CHROMIUM ALLOYS
DIFFUSION
Fabrication
HAFNIUM ALLOYS
HEAT RESISTING METALS
HIGH TEMPERATURE
JOINTS
MEASURED VALUES
MELTING
METALS, CERAMICS, AND OTHER MATERIALS
MOLYBDENUM ALLOYS
MOLYBDENUM ALLOYS
BRAZING
NICKEL ALLOYS
NIOBIUM ALLOYS
TANTALUM ALLOYS
TANTALUM ALLOYS
BRAZING
TENSILE PROPERTIES
THERMAL INSULATION
TITANIUM
TITANIUM ALLOYS
TUNGSTEN ALLOYS
USES
VANADIUM ALLOYS
ZIRCONIUM ALLOYS