Metal treatment – Stock – Ferrous
Patent
1988-11-08
1991-01-15
Arnold, Bruce Y.
Metal treatment
Stock
Ferrous
148253, G02B 522
Patent
active
049848550
ABSTRACT:
An ultra-black film is disclosed, which essentially consists of a base, a Ni-P alloy layer formed on said base and a phosphate layer formed on said Ni-P layer, the spectral reflectance of said ultra-black film being 0.04 to 0.4%. The ultra-black film is obtainable by one of four methods, i.e., a first method, which comprises sequential steps of effecting primary etching of a Ni-P alloy film surface with an aqueous nitric acid solution and effecting secondary etching of the surface with an aqueous sulfuric-acid-containing nitrate solution, a second method, which comprises of effecting said secondary etching of a Ni-P alloy film surface a third method, which comprises sequential steps of forming a Ni-P alloy film on a base by using a plating solution basically composed of nickel salt, sodium hypophosphate, D, L-malic acid and malonic acid and effecting said secondary etching to the alloy film surface and a fourth method, which comprises sequential steps of forming a Ni-P alloy film on a base by using a plating solution basically composed of nickel salt, sodium hypophosphite, D, L-malic acid and succinic acid or basically composed of nickel salt, sodium hypophosphite, D, L-malic acid lactic acid and malonic acid and effecting said primary etching to the surface.
REFERENCES:
patent: 3208447 (1965-09-01), Laszlo
patent: 3357854 (1967-12-01), Hays
patent: 4122239 (1978-10-01), Riboulet et al.
patent: 4209008 (1980-06-01), Lemkey et al.
patent: 4233107 (1980-11-01), Johnson, Sr.
patent: 4361630 (1982-11-01), Johnson, Sr.
patent: 4511614 (1985-04-01), Greeson et al.
Patents Abstract of Japan, vol. 3, No. 41 (E-103), Apr. 10, 1979, p. 55.
JP-A-54 20 746 (Tokyo Shibaura Denki K.K.) 02-16-1979, *Abstract*.
"Black Electroless Nickel Surface Morphologies with Extremely High Light Absorption Capacity" by Christian E. Johnson, National Bureau of Standards, Washington, D.C.; Metal Finishing, Jul. 1980; vol. 78.
Literature "S-780 (Continuous Electroless Nickel Plating Solution)" by Nippon Kanigen Co., Ltd.
Literature "Sumer" by Nippon Kanigen Co., Ltd.
Literature "Electroless Nickel Plating--Kanigen Process" by Nippon Kanigen Co., Ltd.
Horiuti Masao
Kodama Shun-ichi
Kuroda Kenji
Anritsu Corporation
Arnold Bruce Y.
Ryan J. P.
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