US3247028A - Processes for improving the corrosion resistance of ni-co-metal coatings containing boron - Google Patents

Processes for improving the corrosion resistance of ni-co-metal coatings containing boron Download PDF

Info

Publication number
US3247028A
US3247028A US203754A US20375462A US3247028A US 3247028 A US3247028 A US 3247028A US 203754 A US203754 A US 203754A US 20375462 A US20375462 A US 20375462A US 3247028 A US3247028 A US 3247028A
Authority
US
United States
Prior art keywords
aqueous solution
improving
corrosion resistance
liter
metal
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
US203754A
Other languages
English (en)
Inventor
Klein Heinz-Gunter
Zirngiebl Eberhard
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.)
Bayer AG
Original Assignee
Bayer AG
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
Application filed by Bayer AG filed Critical Bayer AG
Application granted granted Critical
Publication of US3247028A publication Critical patent/US3247028A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B35/00—Boron; Compounds thereof
    • C01B35/02—Boron; Borides
    • C01B35/04—Metal borides
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/31—Coating with metals
    • C23C18/32—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron
    • C23C18/34—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/48—Coating with alloys
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/48—Coating with alloys
    • C23C18/50—Coating with alloys with alloys based on iron, cobalt or nickel
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/24—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/24—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds
    • C23C22/33—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds containing also phosphates

Definitions

  • the object of the invention is to provide a process for improving the corrosion resistance of chemically deposited Ni-Co-metal coatings containing boron, characterized by after-treating the chemically plated metal surfaces with aqueous solutions containing a hexavalent chromium compound, preferably chromic acid and, if desired, phosphoric acid or its salts.
  • a hexavalent chromium compound preferably chromic acid and, if desired, phosphoric acid or its salts.
  • the duration of the after-treatment, the concentration of the hexavalent chromium compounds as well as the bath temperature can be varied within a wide range.
  • the temperature of the after-treatment bath can lie between room temperature and boiling temperature, the concentration of, for example chromic acid can be 1 to 300 g./liter.
  • 0.1 to 2% phosphoric acid are sufficient.
  • Example 1 In a chemical plating bath of the following composition:
  • the corrosion test was carried out using the corrosion apparatus Testor of the Firma 'Kohler, Lipperode, at
  • the samples were suspended from glass hooks in the apparatus. During the test period a thin layer of condensed water was always present on the sample surface. The duration of the test was 15 days. The samples were examined first at short intervals, later at longer intervals and the degree of rusting was estimated as a percentage of the total surface. The individual degrees of rusting in proportion to the period of testing are shown in the table.
  • metihanol iron plates were provided with a Co-Ni-B coat- "irrq.
  • the iron plates had an area of 1 dm. each.
  • the composition of the coating was approximately 47% Co, "51% Ni and 2% B.
  • the after-treatment of the plates 15 as well as the corrosion test were carried out as described in Example 1.
  • Example 3 Bust in percent of surface after 15 days Residing Bath G. Ni-B/dm time (ca. 1.1400 (ea. (ca. 1.0184 (ea. (ca. 1.0216 (ca. 15
  • the samples were subsequently suspended for 150 hours in an aerosol chamber with 0.3% NaCl spray. During the duration of the experiment no further rust formation occurred.
  • Example 4 7 0 Iron plates were provided with a Ni-B layer as described in Example 1. The after-treatment of the plates took place at C. and with varying stays in aqueoussolntions of A non after-treated iron plate having a Ni-B coat ng of 2.0540 g. Ni-B/dm. showed after 12 days 4% rust (expressed as a percentage of the surface).
  • a process for improving the corrosion resistance of metal coatings containing boron and a metal selected from the group consisting of Ni, Co, and Ni-Co-systems chemically deposited from a plating solution containing as essential ingredients a metal selected from the group consisting of Ni, Co, and Ni Co-systems and a borohydride which comprises treating the chemically plated surfaces with an aqueous solution containing a hexavalent chromium compound, the chromium compound being present in an amount between 1 to about 300 g./l. of chromic acid.
  • said aqueous solution additionally contains a member selected from the group consisting of phosphoric acid and soluble salts thereof, the phosphoric acid being present in an amount between about 1 and 20 g./l. of aqueous solution.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Electroplating Methods And Accessories (AREA)
US203754A 1961-06-28 1962-06-20 Processes for improving the corrosion resistance of ni-co-metal coatings containing boron Expired - Lifetime US3247028A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF34288A DE1202092B (de) 1961-06-28 1961-06-28 Verfahren zur Verbesserung der Korrosions-eigenschaften von chemisch abgeschiedenen, Bor enthaltenden Metallueberzuegen

Publications (1)

Publication Number Publication Date
US3247028A true US3247028A (en) 1966-04-19

Family

ID=7095487

Family Applications (1)

Application Number Title Priority Date Filing Date
US203754A Expired - Lifetime US3247028A (en) 1961-06-28 1962-06-20 Processes for improving the corrosion resistance of ni-co-metal coatings containing boron

Country Status (5)

Country Link
US (1) US3247028A (de)
BE (1) BE619261A (de)
CH (1) CH415231A (de)
DE (1) DE1202092B (de)
GB (1) GB938097A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3917464A (en) * 1973-07-20 1975-11-04 Us Army Electroless deposition of cobalt boron
EP0094127A1 (de) * 1982-05-06 1983-11-16 Koninklijke Philips Electronics N.V. Gegenstand mit einer Nickel-Phosphorlegierungsschicht und überzogen mit einer Schutzschicht
US4696724A (en) * 1981-06-26 1987-09-29 Nisshin Steel Co., Ltd. Surface treatment of high-nickel/iron alloy steel plate for LNG or LPG tanks

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2477310A (en) * 1947-07-23 1949-07-26 Clark Thread Co Process and composition for producing a dyeable corrosion resistant surface on zinc and high zinc alloys
US2497905A (en) * 1945-03-03 1950-02-21 Rheem Mfg Co Coating zinc or cadmium to impart corrosion and abrasion resistance
US2516685A (en) * 1944-04-19 1950-07-25 American Chem Paint Co Process of preparing iron and aluminum surfaces to receive organic coatings and solution therefor
US2819193A (en) * 1952-06-24 1958-01-07 Parker Rust Proof Co Solution and process for treating metal surfaces
US2975073A (en) * 1958-02-06 1961-03-14 Dow Chemical Co Corrosion resistance of electroless nickel plate
US2990296A (en) * 1958-08-05 1961-06-27 Callery Chemical Co Chemical plating of metal-boron alloys
US2996353A (en) * 1959-04-01 1961-08-15 Du Pont Sodium fluochromate and the process for preparing the same
US3062666A (en) * 1958-11-26 1962-11-06 Du Pont Bath compositions for the chemical reductive plating of nickel-boron and cobalt-boron alloys
US3088846A (en) * 1962-01-24 1963-05-07 Gen Am Transport Processes of treating nickel-phosphorus alloy coatings and the resulting modified coatings

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2106904A (en) * 1936-02-21 1938-02-01 New Jersey Zinc Co Coating malleable non-noble heavy metals
GB819624A (en) * 1957-02-14 1959-09-09 American Chem Paint Co Methods of increasing the corrosion-resistance of soldered metal assemblies

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2516685A (en) * 1944-04-19 1950-07-25 American Chem Paint Co Process of preparing iron and aluminum surfaces to receive organic coatings and solution therefor
US2497905A (en) * 1945-03-03 1950-02-21 Rheem Mfg Co Coating zinc or cadmium to impart corrosion and abrasion resistance
US2477310A (en) * 1947-07-23 1949-07-26 Clark Thread Co Process and composition for producing a dyeable corrosion resistant surface on zinc and high zinc alloys
US2819193A (en) * 1952-06-24 1958-01-07 Parker Rust Proof Co Solution and process for treating metal surfaces
US2975073A (en) * 1958-02-06 1961-03-14 Dow Chemical Co Corrosion resistance of electroless nickel plate
US2990296A (en) * 1958-08-05 1961-06-27 Callery Chemical Co Chemical plating of metal-boron alloys
US3062666A (en) * 1958-11-26 1962-11-06 Du Pont Bath compositions for the chemical reductive plating of nickel-boron and cobalt-boron alloys
US2996353A (en) * 1959-04-01 1961-08-15 Du Pont Sodium fluochromate and the process for preparing the same
US3088846A (en) * 1962-01-24 1963-05-07 Gen Am Transport Processes of treating nickel-phosphorus alloy coatings and the resulting modified coatings

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3917464A (en) * 1973-07-20 1975-11-04 Us Army Electroless deposition of cobalt boron
US4696724A (en) * 1981-06-26 1987-09-29 Nisshin Steel Co., Ltd. Surface treatment of high-nickel/iron alloy steel plate for LNG or LPG tanks
EP0094127A1 (de) * 1982-05-06 1983-11-16 Koninklijke Philips Electronics N.V. Gegenstand mit einer Nickel-Phosphorlegierungsschicht und überzogen mit einer Schutzschicht

Also Published As

Publication number Publication date
CH415231A (de) 1966-06-15
DE1202092B (de) 1965-09-30
GB938097A (en) 1963-09-25
BE619261A (fr) 1962-10-15

Similar Documents

Publication Publication Date Title
US2983634A (en) Chemical nickel plating of magnesium and its alloys
CA2178146C (en) Electroless nickel cobalt phosphorous composition and plating process
US2312855A (en) Method of coating aluminum
US4833041A (en) Corrosion/wear-resistant metal alloy coating compositions
US3096182A (en) Chemical plating solution and process for plating therewith
US3817774A (en) Preparation of plastic substrates for electroless plating
KR20080042175A (ko) 아연 또는 아연 합금 상에 흑색의 6가 크롬이 없는 화성피막을 형성하기 위한 처리 용액
US4061802A (en) Plating process and bath
Yildiz et al. Effect of heat treatments for electroless deposited Ni-B and Ni-WB coatings on 7075 Al alloy
CN107779713A (zh) 一种铍铝合金及其制备方法
US3819424A (en) Method and composition for treating metal surfaces
Sudagar et al. Electrochemical polarization behaviour of electroless Ni-P deposits with different chromium-free pre-treatment on magnesium alloy
US3024134A (en) Nickel chemical reduction plating bath and method of using same
US5019163A (en) Corrosion/wear-resistant metal alloy coating compositions
JP5549837B2 (ja) クロムめっき皮膜の防錆用浸漬処理液及び防錆処理方法
US3895969A (en) Composition and process for inhibiting corrosion of non-ferrous metal surfaced articles and providing surface for synthetic resin coating compositions
US3755018A (en) Composition and process for inhibiting corrosion of non-ferrous metal surfaced articles and providing receptive surface for synthetic resin coating compositions
US3247028A (en) Processes for improving the corrosion resistance of ni-co-metal coatings containing boron
US2499231A (en) Method of producing surface conversion coatings on zinc
US3198659A (en) Thin nickel coatings
US2975073A (en) Corrosion resistance of electroless nickel plate
US5318640A (en) Surface treatment method and composition for zinc coated steel sheet
JPS5845382A (ja) 電気合金メツキ鋼板の表面処理方法
US4371573A (en) Electroless deposition of nickel coatings and depositing baths therefor
CA1059881A (en) Formation of nickel phosphate coatings on iron or steel