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Title: Chemical vapor deposition of Mo tubes for fuel cladding applications

Journal Article · · Surface and Coatings Technology
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  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
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In this study, chemical vapor deposition (CVD) techniques have been evaluated for fabrication of free-standing 0.25 mm thick molybdenum tubes with the end goal of nuclear fuel cladding applications. In order to produce tubes with the wall thickness and microstructures desirable for this application, long deposition durations on the order of 50 h with slow deposition rates were employed. A standard CVD method, involving molybdenum pentachloride reduction by hydrogen, as well as a fluidized-bed CVD (FBCVD) method was applied towards these objectives. Characterization of the tubes produced in this manner revealed regions of material with fine grain microstructure and wall thickness suitable for fuel cladding applications, but lacking necessary uniformity across the length of the tubes. Finally, a path forward for the production of freestanding molybdenum tubes that possess the desired properties across their entire length has been identified and can be accomplished by future optimization of the deposition system.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1422928
Alternate ID(s):
OSTI ID: 1512321
Report Number(s):
LA-UR-17-30055
Journal Information:
Surface and Coatings Technology, Vol. 337, Issue C; ISSN 0257-8972
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 6 works
Citation information provided by
Web of Science

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Cited By (2)

Development and Performance of Tungsten-Coated Graphitic Foam for Plasma-Facing Components journal May 2019
Pyrolytic Carbon Coating Effects on Oxide and Carbide Kernels Intended for Nuclear Fuel Applications journal June 2019

Figures / Tables (12)

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Related Subjects

36 MATERIALS SCIENCE
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
Nuclear fuel cladding
Molybdenum
(Fluidized-bed) chemical vapor deposition
Enhanced accident tolerant materials