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Solar energy absorption characteristics and the effects of heat on the optical properties of several coatingsThe solar energy absorption characteristics of several high temperature coatings were determined and effects of heat on these coatings were evaluated. Included in the investigation were an electroplated alloy of black chrome and vanadium, electroplated black chrome, and chemically colored 316 stainless steel. Each of the coatings possessed good selective solar energy absorption properties at laboratory ambient temperature. Measured at a temperature of 700 K (800 F), the emittances of black chrome, black chrome vanadium, and colored stainless steel were 0.11, 0.61, and 0.15, respectively. Black chrome and black chrome vanadium did not degrade optically in the presence of high heat (811 K (1000 F)). Chemically colored stainless steel showed slight optical degradation when exposed to moderately high heat (616 K (650 F)0, but showed more severe degradation at exposure temperatures beyond this level. Each of the coatings showed good corrosion resistance to a salt spray environment.
Document ID
19810013943
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Lowery, J. R.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
September 4, 2013
Publication Date
April 1, 1981
Subject Category
Energy Production And Conversion
Report/Patent Number
NASA-TM-82414
Accession Number
81N22474
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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