HIGH TEMPERATURE OXIDATION RESISTANT COATINGS FOR TANTALUM BASE ALLOYS

Technical Report · Tue Aug 01 00:00:00 EDT 1961

DOI:https://doi.org/10.2172/4836630· OSTI ID:4836630

Lawthers, D D; Sama, L

Aluminide and beryllide coatings were investigated for tantalunn, a binary Ta-10 W alloy, and a ternary alloy, Ta-10 Hf-5 W. Coatings were applied by dipping, packing, cold spraying, and vapor deposition. Oxidation resistance was evaluated by furnace testing, resistance heating, and flame testing. Internal hardening and diffusion effects were also studied. A Sn-Al coating was developed that had excellent oxidation resistance for 10 hours to at least 3000 deg F. Evaluation was extended to arc-plasma tests, which also showed the feasibility of protecting molybdenum and tungsten. A similar investigation was performed with a Nb alloy, which could be protected to 2500 deg F for at least 10 hours. (auth)

• Research Organization: Sylvania Electric Products Inc. Sylcor Div., Bayside, N.Y.
• DOE Contract Number: AF 33(6161-7462)
• NSA Number: NSA-16-000527
• OSTI ID: 4836630
• Report Number(s): SCNC-326; ASD-TR-61-233
• Resource Relation: Other Information: Orig. Receipt Date: 31-DEC-62
• Country of Publication: United States
• Language: English

Related Subjects

METALS, CERAMICS, AND OTHER MATERIALS
ALUMINUM ALLOYS
BERYLLIUM ALLOYS
COATING
COMBUSTION
CORROSION PROTECTION
DIFFUSION
ELECTRIC ARCS
ELECTRIC CONDUCTIVITY
HAFNIUM ALLOYS
HARDNESS
HEATING
HIGH TEMPERATURE
MOLYBDENUM
NIOBIUM ALLOYS
OXIDATION
PLASMA
STABILITY
TANTALUM
TANTALUM ALLOYS
TESTING
TIN ALLOYS
TUNGSTEN
TUNGSTEN ALLOYS