Substrate having high absorptance and emitance black electroless nicel coating and a process for producing the same

Patent · Tue Apr 16 00:00:00 EST 1985

OSTI ID:5281236

Greeson, R; Geikas, G I

A substrate having high absorptance and emittance is produced by roughening the surface of the substrate, immersing the substrate in a first electroless plating bath having a low phosphorus to nickel concentration, then immersing the substrate in a second electroless plating bath having a phosphorus to nickel concentration higher than that of said first electroless plating bath. Thereafter, the resulting electroless nickel-phosphorus alloy coated substrate is immersed in an aqueous acidic etchant bath containing sulfuric acid, nitric acid and divalent nickel to develop a highly blackened surface on said substrate.

• Assignee: Ball Corp.
• Patent Number(s): US 4511614
• OSTI ID: 5281236
• Resource Relation: Patent File Date: Filed date 31 Oct 1983; Other Information: PAT-APPL-546780
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
BLACK NICKEL
ABSORPTIVITY
EMISSIVITY
PLATING
SOLAR COLLECTORS
FABRICATION
SUBSTRATES
SURFACE COATING
BLACK COATINGS
COATINGS
DEPOSITION
EQUIPMENT
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
SOLAR EQUIPMENT
SURFACE PROPERTIES
141000* - Solar Collectors & Concentrators