US2844530A - Black nickel plating - Google Patents

Black nickel plating Download PDF

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Publication number
US2844530A
US2844530A US640373A US64037357A US2844530A US 2844530 A US2844530 A US 2844530A US 640373 A US640373 A US 640373A US 64037357 A US64037357 A US 64037357A US 2844530 A US2844530 A US 2844530A
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United States
Prior art keywords
nickel
black
chloride
plating
finishes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US640373A
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English (en)
Inventor
Wesley Waclaw Andrew
Knapp Burton Bower
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huntington Alloys Corp
Original Assignee
International Nickel Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DENDAT1068970D priority Critical patent/DE1068970B/de
Priority to BE564818D priority patent/BE564818A/xx
Application filed by International Nickel Co Inc filed Critical International Nickel Co Inc
Priority to US640373A priority patent/US2844530A/en
Priority to GB3957/58A priority patent/GB825031A/en
Priority to CH5590258A priority patent/CH368679A/fr
Priority to FR1191571D priority patent/FR1191571A/fr
Application granted granted Critical
Publication of US2844530A publication Critical patent/US2844530A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/56—Electroplating: Baths therefor from solutions of alloys
    • C25D3/565—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of zinc
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/9265—Special properties
    • Y10S428/927—Decorative informative
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/9335—Product by special process
    • Y10S428/934—Electrical process
    • Y10S428/935—Electroplating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12944—Ni-base component

Definitions

  • the present invention relates to a novel bath composition -and process for producing decorative surfaces on metallic articles and, more particularly, to a novel electroplating bath solution and process for the electrodeposition of black nickel finishes on metallic surfaces and to the production of articles of manifacture having black nickel finishes.
  • metal articles having lustrous black finishes are desirable and suitable for numerous applications and uses, particularly fory decorative purposes and/ or to promote absorption or radiation of heat.
  • matte black finishes are important inproviding nonreecting surfaces in industrial and military instruments of various types, the protoscope being'an example of the former, the naval anemometer an example of the latter.
  • black nickel ⁇ deposits producedylheretofore have been found unsatisfactory in various applications because of poor abrasion resistance and/or poor adherence of the nickel deposit to the metallic surfaces a'nd/or poor ductility characteristics.
  • the normal operating range for the pH of the well-known sulfate-type plating baths which are perhaps the baths most commonly used in commercial practice, generally falls within the relatively narrow range of about to 6.
  • the pH of such baths falls below about 5
  • the nickel deposits often become undesirably dull and unattractive and, as a consequenceA thereof, careful regulation and control of pH values is required.
  • the concentrations of various constituents commonly employed in sulfate-type solutions must be controlled within rather narrow limits. Too, the permissible current densities employed in many sulfate-type plating baths are often of a narrow and restrictive scope, e. g., about 0.5 to about 1.5 amperes per square foot.
  • a decorative, black f finish may be applied uniformly and without difficulty ⁇ to metallic surfaces by employing a special electrolytic bath composition and process to produce a vblack nickel electro-deposit which is uniform in color and exhibits an improved combination of properties with respect to abrasion resistance, adhesivity and ductility.
  • lt is an object of the present invention to provide decorative colored surfaces onmetallic articles.
  • Another object of the invention is to provide a durable, substantially permanent black color on metallic surfaces for decorative purposes, to prevent reflectionl ofl light and/or to promote absorption or radiation of heat.
  • the invention also contemplatesv providing ⁇ metallic surfaces with electrodep-osited black finishes characterized by strong adhesivity, good ductility, ⁇ and substantial re- ⁇ sistance to abrasion. f
  • lt is also the purpose of the invention to provide nickel and/or nickeleoated materials" with uniform and substantially permanent black nickel finishes which exhibit a superior combination of physical properties as compared to black nickel finishes heretofore known.
  • the invention further contemplates providing anovel electroplating bath for depositing a decorative jet' black color on nickel and/or nickel-coated materials.
  • Still another object of the invention is to provide a novel aqueous electroplating bath of special composition for lthe provision of uniform black nickel nisheson metallic surfaces which is conducive to ease of control and facility 'of operation in the electrodeposition of such black nickel finishes. i i It is also an object of the invention to provide a novel process 'for accomplishing the foregoing objects.
  • lt is likewise Within the contemplation of the instant invention to provide a process for blackening metallic articles which is easily controllable and provides uniform' coatings.
  • the present invention contemplates the electrodeposition of durable black nickel iinishes upon metallic articles, particularly nickel and nickel-coated articles, by subjecting the metallic articles to the action of an aqueous, acidic electroplating bath containing nickel chloride hexahydrate, ammonium chloride, sodium thiocyanate and zinc chloride, the nickel chloride hexahydrate concentration and current density being related such that the correlation falls within the shaded area ABCDA of theaccompanying graph. The.
  • black nickel iinishes producediinaccordance with the concepts of the instant inventionfare characterized by a highly satisfactory combinationof 1physical properties, including abrasion resistance, ductility, and-adhesivity of the black nickel deposit to the'metallic'snrface treated.
  • nickel chloride-hexahydrate-current density relationships falling outside the shaded rarea of the graph result ininferior black nickel deposits.
  • a nickel chloride heXahydrate-current density relationship above the shaded area results in irregular, grey deposits; relationship falling below the shaded area results in darkgrey deposits.
  • the constituentsV of our electroplating'solution can be varied over relatively Wide range of Aconcentration and this factor isV an extremely important commercial consideration because itadvantageouslyassists in minimizing the prior diiiicultiesencountered in controlling black nickel plating-processes;
  • the concentrations of the respectivefcomponents ofv our aqueous plating bath are maintained as follows: nickel chloride (NiCI2.6H2O), at least about 50 g. p. ⁇ 1. (grams per liter), e. g., 50 to about 165 g. p. l.; ammonium chloride (NHiCl), about 7.5 to about 45 g. p.
  • the bath contains about 60 to about 90 g. p. l. of nickel chloride hexahydrate, about l to about 30g. p. l. of ammonium chloride, aboutto about 20 g. p. l. of sodium thiocyanate, and about ⁇ to about 50 g. p. l. of zinc'chloride.
  • the electroplatingsolution of the present invention containing nickel chloride hexahydrate, ammonium chloride, sodium ⁇ thiocyanate and zinc chloride generally has i afpI-Ipvalue of the order of 5 toabout 5.5 If it is desired to operate at lower pH values, the pH can be readily adjusted by addingto vthe bath a small amount of acid, preferably hydrochloric acid in an ⁇ amount vup to about 0.5: milliliter per liter ofelectroplating solution. An equivalent amount of sulfuric acid can be used but is less preferred.
  • Another advantage of the present invention is that substantially thick black nickel deposits can be obtained if desired under a given set of operating conditions since the electrodeposition. process can be conducted for relatively long periods of time without deleteriously affecting the attractive black appearance of the electrodeposited lm.
  • process can be conducted for relatively long periods of time without deleteriously affecting the attractive black appearance of the electrodeposited lm.
  • Plating periods below this minimum value usually result in dark films having some color interference.
  • a thicker iilm develops but it remains black in color. ⁇ This factor permits ⁇ the build-up of thick black deposits onthe-metallic surface being treated and byso doing it serves a twoffold purpose.
  • the abrasion resistance and adhesion of black nickel finishes can be further improved by subjecting the surface of the material to be blackened to a pre-treatment operation wherein an initial or preliminary metal electrodeposit, preferably nickel, is applied to the surface prior to the aforedescribed black plating treatment. It has been found that when the pretreatment operation is employed, black finishes are obtained having a markedly improved combination of superior abrasion resistance and adhesion as compared to black finishes heretofore known. It is preferred to provide the initial nickel electrodeposit from an acid-nickel chloride-bath containing not more than about 350 g. p. l. of nickel chloride hexahydrate, the pH of the bath being not more than pH 3.
  • the pre-treating bath contains up to about 35 g. p. l. of boric acid, up to about 40 g. p. l. of hydrochloric acid and about 150 to about 340 g. p. l. of nickel chloride hexahydrate.
  • a preferred acid-nickel chloride pre-treatment operation comprises immersing the article to be treated in an aqueous bath solution containing about 150 to about 240 g. p. l. of nickel chloride hexahydrate and about 30 toy about 40 g. p. l. of hydrochloric acid.
  • the bath is maintained at a temperature of about 60 F. to about 80 F. at a pH of about to about 0.5.
  • the article to be plated is treated anodically for about l to about 3 minutes and then cathodically for about 5 to about 10 minutes while employing suitable current densities of about 20 to about 40 a. s. f.
  • a nickel electrodeposit from a pre-treating bath containing about 30 g. p. l. of boric acid and about 300 g. p. l. of NiCl2.6H2O has given excellent results.
  • the operating conditions for this bath were as follows: temperature, 140 F.; pH, about 2; and current density, about 50 a. s. f.
  • the data tabulated in Table III is illustrative of the combination of excellent adhesion and abrasion properties obtained when using the acid-nickel chloride pretreatment process and affords a comparison of. results when wrought nickel and nickel-plated steel panels were subjected to known conventional pre-treating processes as well as to thev acid-nickel chloride pre-treatment process.
  • the acid-nickel chloride treatment involved treating the materials in an aqueous bath maintained at about 75 F. and containing about 180 g. p. l. of nickel chloride (NiClgHzZ) and approximately 36 g. p. l. of hydrochloric acid. An electric current was passed therethrough at a current density of about 30 a. s. f.
  • Metals other than .nickel which can be satisfactorily used as the preliminary metal electrodeposit include copper, silver, cobalt, chromium, lead, cadmium, zinc, tin, antimony, bismuth'and gold. Alloys such as cobaltnickel, tin-bismuth, antimony-bismuth and brass can also be suitably employed as preliminaryv metal electrodeposits.
  • black matte nishes are also desired.
  • the material to be plated is given a matte surface by mechanical, chemical or other means.
  • black matte finishes provided'on such surfaces heretofore have exhibited the undesirable effect of lacking adhesivity.
  • black matte finishes are easily achieved and the finish is strongly adherent. i
  • the present invention can be employed to provide black finishes on a Wide variety ofV foundation metals and/or alloys such as stain-less steel, steel, vcopper alloys, cast iron, precious metals, and alloys thereof, etc., and is particularly applicable for producing black decorative coatings on nickel and/or nickel-coated materials, e. g., wrought nickel, electrodeposited nickel.
  • the instant invention is suitable for such applications as nickel-plated steel, baking pans, office machines, name plates, jewelry, photographic equipment, etc.
  • the instant invention provides a novel aqueous electrolytic bath and an electrcdeposition process which is easily controllable in providing jet black finishes on metallic surfaces,
  • ammonium chloride, sodiumthiocyanate, and zinc chlorideA mayb'e suitably varied over relatively wide ranges and since a wide latitude is permittedin' variations of pl-I'values, cur- Vvrent densities and plating times, careful control and fregulation'ofthe,process is substantially minimized.
  • ⁇ avillabe' readilyapparent that the flexibility in operating "conditions ofthe 'instant invention providesl the art-With a process 'which mayvbewconveniently adapted to fulll ⁇ aparticular 'need/for' requirement. For examplefif an attractiVeblack-nish isvdesiredin a-minimum time interval, a'suitably high' currentdensity, e.
  • g., 6 or 7 a. s. f. may be: satisfactorily employed. If a thick black deposit l.is desired, ⁇ the plating operation can be conducted for 4but the Vcontent of nickel chloride in the solution can be 'provided by'any suitable means.
  • a bath for electrodepositing black finishes 'on metallic surfaces comprising an aqueous, acidic solution containing about 50- g. p. l. to about 165 g. p. l. of nickel chloridehexahydrate, from 7.5 g. p. l. to about 45 g. p. l. of ammonium chloride, about 7.5 g. p. l. to abouti 30,1 g. p. l. of sodium thiocyanate and from l5 g. p..l. to about 60 g. p. l. of zinc chloride.
  • A'process for electrodepositing attractive black linishes on metallic articles which comprises subjecting the article to be blackened to the action .of an aqueous electroplating solution having a-pH Within a range of at least as low as about 2.3 and up to about 5.5 and containing from 7.5 g. p. l. to -about 45 g. p. l.- of ammonium chloride,-fabou ⁇ t 7.5 g. p. l.to about 30 g. p. l. yof sodium thiocyanate, from l5 g. p. l. to about' 60 g. p. l.
  • a method as described in claim 4 wherein the metal 'to be blackened has anickel surface.
  • An easily ycontrollable process for electrodepositing substantially permanent and uniform black, vdecorative finishes ⁇ on metallic articles whichcomprises lsubjecting the article to be blackened ⁇ to the 'action ofan l'aqueous electroplating solution having a pH within 'a ran'geoflat least as low as about 2.3 up to about 5.5 v*and .containing about l5 g..p. ⁇ l. to'about 30 g. p. l. of ammonium chloride, about l() g. p. l. to about 20 g. p. l. of
  • sodium thiocyanate about 20 g. p. l. to about 50 g. p. l.
  • tractive black finishes on metallic articles which comprises 'the steps of pre-treating the article to be blackened by providing an initial metal electrodeposit thereon and then' subjecting the pre-treated article to the action of an aqueous electroplating solution having a pH Within a range of at least as low as about 2.3 up to about 5.5
  • ammonium chloride about 7.5 g. p. l. to about 30 g. p. l.
  • Vofsodium thiocyanate from 15 g. p. l. to about 60 g.V p. l.
  • the concentration of said nickel chloride hexahydrate being related to the current density employed such that the correlation thereof falls within the shaded area ABCDA of the accompanying graph.
  • a method as described in claim 9 wherein the metal to be blackened is nickel-surfaced.
  • An easily controllable process for providing dur able, uniform and attractive black finishes on metallic articles which comprises the steps of pre-treating the article to be blackened by providing an initial metal electrodeposit lthereon and then subjecting the pre-treated article -to the action of an aqueous electroplating solution having a pH within a range of at least as low as about 2.3 and up to about 5.5 and containing from l5 g. p. l. to 30 g. p. l. of ammonium chloride, about l0 g. p. l. to
  • metallic articles which comprises the steps of immersing the metallic article in an acid-nickel chloride electrolyte containing acid and not more than about 350 g. p. l. of nickel chloride hexahydrate, the pH of the electrolyte being not more than about pH 3 to thereby provide the 'said metallic article with an initial electrodeposit of nickel, and then subjecting the metallic article so treated to the action of an aqueous electroplating solution having a pH within a range of at least as 10W as about 2.3 and up to 5.5 and containing from 7.5 g. p. l. to about 45 g. p. l. of ammonium chloride, about 7.5 g. p. l. to about 30 g. p. l.
  • nickel chloride hexahydrate of sodium thiocyanate and from l5 g. p. l. to about 60 g. p. l. zinc chloride, and nickel chloride hexahydrate, the concentration of said nickel chloride hexahydrate being related to the current density employed such that -the correlation thereof falls within the shaded area ABCDA of the accompanying graph.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Electroplating Methods And Accessories (AREA)
US640373A 1957-02-15 1957-02-15 Black nickel plating Expired - Lifetime US2844530A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DENDAT1068970D DE1068970B (de) 1957-02-15 Galvanisches Abscheiden schwarzer Nickelüberzüge und Vorbehandlung der zu überziehenden Werkstücke
BE564818D BE564818A (US07223432-20070529-C00017.png) 1957-02-15
US640373A US2844530A (en) 1957-02-15 1957-02-15 Black nickel plating
GB3957/58A GB825031A (en) 1957-02-15 1958-02-06 Improvements relating to the electrodeposition of nickel
CH5590258A CH368679A (fr) 1957-02-15 1958-02-14 Procédé d'obtention d'un revêtement noir sur un article métallique
FR1191571D FR1191571A (fr) 1957-02-15 1958-02-14 Perfectionnements au dépôt électrolytique de nickel

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Application Number Priority Date Filing Date Title
US640373A US2844530A (en) 1957-02-15 1957-02-15 Black nickel plating

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US2844530A true US2844530A (en) 1958-07-22

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US640373A Expired - Lifetime US2844530A (en) 1957-02-15 1957-02-15 Black nickel plating

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US (1) US2844530A (US07223432-20070529-C00017.png)
BE (1) BE564818A (US07223432-20070529-C00017.png)
CH (1) CH368679A (US07223432-20070529-C00017.png)
DE (1) DE1068970B (US07223432-20070529-C00017.png)
FR (1) FR1191571A (US07223432-20070529-C00017.png)
GB (1) GB825031A (US07223432-20070529-C00017.png)

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3064337A (en) * 1958-05-19 1962-11-20 Rockwell Standard Co Composite metal article
US3223598A (en) * 1962-11-23 1965-12-14 Germaine F Jacky Method for determining the adhesion of metal plating
US3234031A (en) * 1961-02-04 1966-02-08 Bayer Ag Reduction nickel plating with boron reducing agents and organic divalent sulfur stabilizers
US3295999A (en) * 1960-12-31 1967-01-03 Bayer Ag Process of chemical metal plating and baths therefor
US3454376A (en) * 1966-06-06 1969-07-08 Clevite Corp Metal composite and method of making same
US3736108A (en) * 1969-10-15 1973-05-29 Aic Approvvigio Ind Chim Articles and method of electrodepositing a decorative nickel/chromium coating on a metal substrate
US3920413A (en) * 1974-04-05 1975-11-18 Nasa Panel for selectively absorbing solar thermal energy and the method of producing said panel
US3997301A (en) * 1975-02-13 1976-12-14 Kawasaki Steel Corporation Tin-electroplated steel sheets and method for making them
FR2335626A1 (fr) * 1975-12-17 1977-07-15 Philips Nv Procede pour la realisation d'un revetement presentant une absorption elevee dans la gamme de longueurs d'onde du spectre solaire et produits obtenus
US4239604A (en) * 1978-06-02 1980-12-16 Mahdjuri Faramarz S Selective layer for absorbing compartment of solar collectors
DE3027982A1 (de) * 1979-08-31 1981-04-02 Oxy Metal Industries Corp., Detroit, Mich. Bad fuer die galvanische abscheidung einer im wesentlichen schwarzen nickelauflage
US4262060A (en) * 1978-11-09 1981-04-14 Tokyo Shibaura Denki Kabushiki Kaisha Solar heat absorber and a method of manufacturing the same
US4313802A (en) * 1979-02-15 1982-02-02 Sumitomo Metal Industries, Ltd. Method of plating steel strip with nickel-zinc alloy
US4350574A (en) * 1981-03-23 1982-09-21 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Method for depositing an oxide coating
WO1983002785A1 (en) * 1982-02-11 1983-08-18 Nat Steel Corp Method of coating steel strip with nickel alloy
US4422920A (en) * 1981-07-20 1983-12-27 Occidental Chemical Corporation Hydrogen cathode
US4508600A (en) * 1984-04-13 1985-04-02 Nisshin Steel Company, Ltd. Process for preparing Zn-Ni-alloy-electroplated steel sheets with excellent adherence of the plated layer
US4569731A (en) * 1984-04-25 1986-02-11 Kawasaki Steel Corporation Production of Zn-Ni alloy plated steel strips
US4990395A (en) * 1984-12-19 1991-02-05 Blasberg Oberflachentechnik Gmbh Electrically conductive copper layers and process for preparing same
WO1997043127A1 (en) * 1996-05-15 1997-11-20 Nickel Rainbow Ltd. Articles having a colored metallic coating and process for their manufacture
US5908542A (en) * 1997-07-02 1999-06-01 Gould Electronics Inc. Metal foil with improved bonding to substrates and method for making the foil
EP1227884A1 (de) * 1999-09-28 2002-08-07 Surtec Produkte und Systeme für die Oberflächenbehandlung GmbH Verfahren zur Herstellung eines Elektrokatalysators
US6800190B1 (en) * 2000-05-16 2004-10-05 Steven F. Wilcox Method to obtain a variety of surface colors by electroplating zinc nickel and nickel alloy oxides
WO2012001134A2 (de) 2010-06-30 2012-01-05 Schauenburg Ruhrkunststoff Gmbh Verfahren zur abscheidung einer nickel-metall-schicht
US20140287208A1 (en) * 2013-03-22 2014-09-25 Surface Technology, Inc. Blackened composite electroless nickel coatings
CN106399683A (zh) * 2016-12-06 2017-02-15 崔海林 镍铜矿石湿法提取镍、铜金属的方法
WO2023272492A1 (zh) * 2021-06-28 2023-01-05 沈伟 一种具有高吸热性的均热板及其制备方法

Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
US4351713A (en) * 1979-08-22 1982-09-28 Thomas Steel Strip Corp. Electro-co-deposition of corrosion resistant nickel/zinc alloys onto steel substrates
US4282073A (en) 1979-08-22 1981-08-04 Thomas Steel Strip Corporation Electro-co-deposition of corrosion resistant nickel/zinc alloys onto steel substrates
CN109576740B (zh) * 2019-01-29 2020-12-22 深圳奕创表面处理科技有限公司 光亮黑镍电镀液及其制备方法、电镀件及光亮黑镍的电镀方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2679475A (en) * 1952-01-21 1954-05-25 Joseph C Singler Metal blackening composition and method

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FR590746A (fr) * 1924-02-16 1925-06-22 Grauer Et Weil Bain pour le nickelage noir de tous métaux par électrolyse

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2679475A (en) * 1952-01-21 1954-05-25 Joseph C Singler Metal blackening composition and method

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3064337A (en) * 1958-05-19 1962-11-20 Rockwell Standard Co Composite metal article
US3295999A (en) * 1960-12-31 1967-01-03 Bayer Ag Process of chemical metal plating and baths therefor
US3234031A (en) * 1961-02-04 1966-02-08 Bayer Ag Reduction nickel plating with boron reducing agents and organic divalent sulfur stabilizers
US3223598A (en) * 1962-11-23 1965-12-14 Germaine F Jacky Method for determining the adhesion of metal plating
US3454376A (en) * 1966-06-06 1969-07-08 Clevite Corp Metal composite and method of making same
US3736108A (en) * 1969-10-15 1973-05-29 Aic Approvvigio Ind Chim Articles and method of electrodepositing a decorative nickel/chromium coating on a metal substrate
US3920413A (en) * 1974-04-05 1975-11-18 Nasa Panel for selectively absorbing solar thermal energy and the method of producing said panel
US3997301A (en) * 1975-02-13 1976-12-14 Kawasaki Steel Corporation Tin-electroplated steel sheets and method for making them
FR2335626A1 (fr) * 1975-12-17 1977-07-15 Philips Nv Procede pour la realisation d'un revetement presentant une absorption elevee dans la gamme de longueurs d'onde du spectre solaire et produits obtenus
US4080269A (en) * 1975-12-17 1978-03-21 U.S. Philips Corporation Method of producing coatings having a high absorption in the range of the solar spectrum
US4239604A (en) * 1978-06-02 1980-12-16 Mahdjuri Faramarz S Selective layer for absorbing compartment of solar collectors
US4262060A (en) * 1978-11-09 1981-04-14 Tokyo Shibaura Denki Kabushiki Kaisha Solar heat absorber and a method of manufacturing the same
US4313802A (en) * 1979-02-15 1982-02-02 Sumitomo Metal Industries, Ltd. Method of plating steel strip with nickel-zinc alloy
DE3027982A1 (de) * 1979-08-31 1981-04-02 Oxy Metal Industries Corp., Detroit, Mich. Bad fuer die galvanische abscheidung einer im wesentlichen schwarzen nickelauflage
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DE1068970B (de) 1959-11-12
CH368679A (fr) 1963-04-15
FR1191571A (fr) 1959-10-20

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