Cladding Alloys for Fluoride Salt Compatibility

Muralidharan, Govindarajan¹  Wilson, Dane F¹  Walker, Larry R¹  Santella, Michael L¹  Holcomb, David Eugene¹ 

[1] ORNL

关键词: Cladding;    alloys;    fluoride salt compatibility;    nickel based;    nickel clad;   

DOI  :  10.2172/1018616
RP-ID  :  ORNL/TM-2011/95
PID  :  OSTI ID: 1018616
Others  :  Other: AF3670300
Others  :  NEAF265

美国|英语

来源: SciTech Connect

【 摘 要 】

This report provides an overview of several candidate technologies for cladding nickel-based corrosion protection layers onto high-temperature structural alloys. The report also provides a brief overview of the welding and weld performance issues associated with joining nickel-clad nickel-based alloys. From the available techniques, two cladding technologies were selected for initial evaluation. The first technique is a line-of-sight method that would be useful for cladding large structures such as vessel interiors or large piping. The line-of-sight method is a laser-based surface cladding technique in which a high-purity nickel powder mixed into a polymer binder is first sprayed onto the surface, baked, and then rapidly melted using a high-power laser. The second technique is a vapor phase technique based on the nickel-carbonyl process that is suitable for cladding inaccessible surfaces such as the interior surfaces of heat exchangers. An initial evaluation for performed on the quality of nickel claddings processed using the two selected cladding techniques.