HIGH TEMPERATURE OXIDATION RESISTANT COATINGS FOR TANTALUM BASE ALLOYS

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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 … continued below

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Medium: P; Size: Pages: 82

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Lawthers, D.D. & Sama, L. August 1, 1961.

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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)

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Medium: P; Size: Pages: 82

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Other Information: Orig. Receipt Date: 31-DEC-62

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  • August 1, 1961

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  • Jan. 22, 2018, 7:23 a.m.

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  • Nov. 23, 2024, 1:42 a.m.

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Lawthers, D.D. & Sama, L. HIGH TEMPERATURE OXIDATION RESISTANT COATINGS FOR TANTALUM BASE ALLOYS, report, August 1, 1961; United States. (https://digital.library.unt.edu/ark:/67531/metadc1055779/: accessed February 12, 2025), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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