HIGH TEMPERATURE OXIDATION RESISTANT COATINGS FOR TANTALUM BASE ALLOYS. Quarterly Progress Report No. 2, February 1, 1962 to April 30, 1962

Technical Report · Tue May 15 00:00:00 EDT 1962

DOI:https://doi.org/10.2172/4818556· OSTI ID:4818556

Sama, L

Tin-- aluminum base coatings applied by a cold spray-hot vacuum diffusion technique were studied further on Ta-10 W and Ta-10 Hf-5 W and work initiated on Ta--30 Nb--7t/2 V. Refractory additions to the coatings were optimized for Ta--10 W and the use of aluminum-silicon in tin was found beneficial for Ta--30 Nb--7 1/2 V. Furnace and oxy-acetylene torch tests were performed at temperatures from 1100 to over 3000 deg F. Diffusion treatments in vacuum, hydrogen, and argon were compared for coatings on Ta-10 W. Oxide formation on Ta--10 W coatings at various temperatures was studied by x-ray diffraction. The oxidation behavior of various tin--aluminum alloys and of the intermetallic (Ta--30 Nb--7 1/2 V) Al/sub 3/ was also studied, together with interactions of three alloys with A/sub 2/O/sub 3/ at elevated temperatures in vacuum. (auth)

• Research Organization: General Telephone and Electronics Labs. Inc., Bayside, N.Y.
• DOE Contract Number: AF33(657)-7339
• NSA Number: NSA-16-024163
• OSTI ID: 4818556
• Report Number(s): NP-11711; TR-62-460.1
• Resource Relation: Other Information: Orig. Receipt Date: 31-DEC-62
• Country of Publication: United States
• Language: English

Related Subjects

METALS, CERAMICS, AND OTHER MATERIALS
ACETYLENES
ALLOYS
ALUMINUM ALLOYS
ALUMINUM HYDROXIDES
ALUMINUM OXIDES
ARGON
COATING
DIFFRACTION
DIFFUSION
ENRICHMENT
FURNACES
HIGH TEMPERATURE
HYDROGEN
INTERACTIONS
INTERMETALLIC COMPOUNDS
NIOBIUM ALLOYS
OXIDATION
OXIDES
OXYGEN
PHASE DIAGRAMS
REFRACTORIES
SILICON
TANTALUM ALLOYS
TESTING
TIN ALLOYS
TUNGSTEN ALLOYS
VACUUM
VANADIUM ALLOYS
X RADIATION