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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/41680
- Plasma sprayed ni-al coatings for safe ending heat exchanger tubes
- Allan, Margaret L.; Otterson, D.; Berndt, Christopher C.
- Brookhaven National Laboratory (BNL) has developed thermally conductive composite liners for corrosion and scale protection in heat exchanger tubes exposed to geothermal brine. The liners cannot withstand roller expansion to connect the tubes to the tubesheet. It is not possible to line the ends of the tubes with the same material after roller expansion due to the nature of the current liner application process. It was requested that BNL evaluate plasma sprayed Ni-A1 coatings for safe ending heat exchanger tubes exposed to geothermal brine. The tubes of interest had an internal diameter of 0.875 inches. It is not typical to thermal spray small diameter components or use such small standoff distances. In this project a nozzle extension was developed by Zatorski Coating Company to spray the tube ends as well as flat coupons for testing.
- Publication type
- Technical report
- BNL Report
- Publication year
- BNL; Brookhaven National Laboratory; Corrosion; Heat exchanger tubes; Plasma spray
- Brookhaven National Laboratory