[go: up one dir, main page]

EP0331730A1 - Procede pour appliquer un revetement composite d'oxyde de nickel-titane sur un support metallique - Google Patents

Procede pour appliquer un revetement composite d'oxyde de nickel-titane sur un support metallique Download PDF

Info

Publication number
EP0331730A1
EP0331730A1 EP88900959A EP88900959A EP0331730A1 EP 0331730 A1 EP0331730 A1 EP 0331730A1 EP 88900959 A EP88900959 A EP 88900959A EP 88900959 A EP88900959 A EP 88900959A EP 0331730 A1 EP0331730 A1 EP 0331730A1
Authority
EP
European Patent Office
Prior art keywords
titanium
nickel
duration
applying
coating
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.)
Withdrawn
Application number
EP88900959A
Other languages
German (de)
English (en)
Other versions
EP0331730A4 (fr
Inventor
Ivan Antonovich Groza
Diter Landolt
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.)
Kishinevsky Politekhnichesky Institut Imeni Slazo
Original Assignee
Kishinevsky Politekhnichesky Institut Imeni Slazo
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 Kishinevsky Politekhnichesky Institut Imeni Slazo filed Critical Kishinevsky Politekhnichesky Institut Imeni Slazo
Publication of EP0331730A1 publication Critical patent/EP0331730A1/fr
Publication of EP0331730A4 publication Critical patent/EP0331730A4/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D15/00—Electrolytic or electrophoretic production of coatings containing embedded materials, e.g. particles, whiskers, wires
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
    • C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
    • C25B11/073—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material
    • C25B11/091—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of at least one catalytic element and at least one catalytic compound; consisting of two or more catalytic elements or catalytic compounds
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D15/00—Electrolytic or electrophoretic production of coatings containing embedded materials, e.g. particles, whiskers, wires
    • C25D15/02—Combined electrolytic and electrophoretic processes with charged materials

Definitions

  • the invention relates to the field of electroplating and relates in particular to a method for applying a composite nickel-titanium oxide coating to a metal base.
  • the particles of the titanium oxide powder are co-precipitated with nickel ions with constant mixing of the electrolyte on the cathode, on the metal base (R.S.Saifullin "Neorganicheskie kompozitsionnye materialy" - inorganic connecting materials "- 1983, Chimiya, Moscow).
  • Composite coatings which are produced in the known method, have an inhomogeneous structure, since the particles of titanium oxide in the electrolyte are subject to coagulation and the formation of particles with large dimensions. The formation of cracks is possible at the phase boundary between the metal phase and titanium oxide.
  • the known method also requires constant mixing of the electrolyte, for which auxiliary devices are used.
  • the electrolytic deposition is carried out under the galvanostatic conditions at a current density of 5 to 10 A / dm2. Fluorines are used to dissolve the oxide phase of titanium, which is formed during the electrolysis of titanium ions which are contained in the electrolyte solution and added to form the metal phase of titanium for its deposition on the base.
  • the titanium was not deposited on the substrate in the form of the metal phase, but in the form of titanium oxides and hydroxides.
  • the presence of fluorine ions only led to a reduction in the percentage of titanium oxide in the coating to be applied. As a result, the corrosion resistance and fire resistance of the coating decreased.
  • the invention has for its object to develop a method for applying a composite nickel-titanium oxide coating on a metal base, in which it is possible during electrolytic deposition, a composite material coating with a sufficiently high percentage of titanium oxide, which has a homogeneous finely dispersed structure has to produce.
  • This object is achieved in that in the process for applying a nickel-titanium oxide coating to a metal base by electrolytic deposition from an aqueous.
  • the method implemented in accordance with the present invention effects the production of a coating with a high (up to 53%) percentage of titanium oxide, the particles of which are finely dispersed, evenly distributed and firmly bonded to the metal phase of nickel.
  • the coating is characterized by high corrosion resistance and fire resistance.
  • the process takes place in an electrolyte with a simple composition, which contains only two non-toxic and stable components, it does not require any auxiliary devices for mixing the electrolyte.
  • An aqueous electrolyte solution is prepared which contains nickel dichloride and titanium trichloride with a concentration which brings about a maximum specific conductivity of the solution.
  • the composite nickel-titanium oxide coating is applied to a metal base by electrolytic deposition in a bath with the prepared electrolyte.
  • the deposition of the coating is carried out under the potentiostatic pulse ratios at a clock duration T of the pulses at a pulse duration t 1 of the potentials equal to 10 to 30 ms, with a pulse amplitude that ensures the harmonic decaying vibrations of the anode current during the breaks is sufficient, and with a pause duration t2, which is the duration of the complete damping of the vibrations of the anode current.
  • the use of the potential pulses with a duration of less than 10 ms leads to a reduction in the thickness of the coatings and to a reduction in the content of titanium oxide particles in the coating.
  • the increase in the duration t 1 of the pulses over 30 ms leads to the instability of the electrolytic deposition and, as a result, to the uneven distribution of the titanium oxide particles in a base metal matrix of the co-precipitant, the nickel.
  • the amplitude value of the potential of a working pulse between a cathode (base) and a chlorine-silver comparison electrode is from (-1200) to (-1500) mV.
  • the size of the potential during the pause is chosen equal to the potential E k of the corrosion of the cathode material.
  • the vibrations of the anode current during a pause are only possible in an interval of the potential quantities, according to the invention, and with a maximum electrical conductivity of the electrolyte solution.
  • the titanium trichloride hydrolyses to form titanium oxide-titanium hydroxide particles in the vicinity of the cathode as a result of the pH value of the hydrate formation of titanium ions being reached.
  • the amount of titanium oxide-titanium hydroxide particles increases as a result of strong jumps in current at the time the potential pulses occur.
  • the nickel ions in its vicinity discharge at the cathode (base) by going into the metallic phase and thereby engaging with the titanium oxide particles, as a result of which the composite coating is deposited on the cathode (metal base).
  • the presence of harmonic vibrations in the anode current promotes the increase in the amount of titanium oxide in the layer adjacent to the cathode, precludes the possibility of dissolving a redeposited coating layer, and causes the titanium oxide particles to mix in the layer adjacent to the cathode, thereby reducing the uniformity Distribution of the same in the coating layer is promoted.
  • An electrolyte solution was prepared, for which 200 g of nickel dichloride were taken and this was dissolved in 1 liter of water. Then, a 15% aqueous titanium trichloride solution was added to the prepared solution in an amount of 300 ml. The solution achieved maximum electrical conductivity.
  • Metal pads for example, of copper, titanium, nickel, measuring 10 cm2 x 0.1 cm, were etched in any suitable known etchant to remove oxide film and then washed in distilled water.
  • the electrolytic deposition was carried out in baths containing 2 l of the electrolyte produced. Nickel and titanium anodes were used.
  • the electrolytic deposition was carried out under the potentiostatic pulse ratios by choosing the parameters of the pulse ratios in the range according to the invention. Information about the examples is summarized in Table 1.
  • a process for applying a composite nickel-titanium oxide coating can be used in the production of protective coatings (corrosion and fire-resistant) and in the production of electrode materials which are used for carrying out oxidation processes.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)
  • Electrolytic Production Of Metals (AREA)

Abstract

Le procédé décrit s'effectue par sédimentation électrolytique à partir d'une solution aqueuse renfermant du nickel dichloré et du titane trichloré, tous deux dans une concentration permettant l'électroconductivité de la solution. Cette sédimentation électrolytique s'effectue en régime potentiostatique pulsé.
EP19880900959 1987-08-27 1987-11-12 Procede pour appliquer un revetement composite d'oxyde de nickel-titane sur un support metallique. Withdrawn EP0331730A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SU4308861 1987-08-27
SU874308861A SU1544846A1 (ru) 1987-08-27 1987-08-27 Способ электролитического осаждени никелевых покрытий с включением оксидов титана

Publications (2)

Publication Number Publication Date
EP0331730A1 true EP0331730A1 (fr) 1989-09-13
EP0331730A4 EP0331730A4 (fr) 1990-01-29

Family

ID=21328802

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880900959 Withdrawn EP0331730A4 (fr) 1987-08-27 1987-11-12 Procede pour appliquer un revetement composite d'oxyde de nickel-titane sur un support metallique.

Country Status (4)

Country Link
EP (1) EP0331730A4 (fr)
JP (1) JPH02500603A (fr)
SU (1) SU1544846A1 (fr)
WO (1) WO1989001997A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006082218A1 (fr) * 2005-02-04 2006-08-10 Siemens Aktiengesellschaft Surface a microstructure reduisant la mouillabilite et procede de realisation associe
US7563935B2 (en) 2005-08-15 2009-07-21 Phares Pharmaceutical Research N.V. et al. Crystal forms of astaxanthin

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Keine weitere Entgegenhaltungen. *
See also references of WO8901997A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006082218A1 (fr) * 2005-02-04 2006-08-10 Siemens Aktiengesellschaft Surface a microstructure reduisant la mouillabilite et procede de realisation associe
US7563935B2 (en) 2005-08-15 2009-07-21 Phares Pharmaceutical Research N.V. et al. Crystal forms of astaxanthin

Also Published As

Publication number Publication date
JPH02500603A (ja) 1990-03-01
SU1544846A1 (ru) 1990-02-23
EP0331730A4 (fr) 1990-01-29
WO1989001997A1 (fr) 1989-03-09

Similar Documents

Publication Publication Date Title
DE947657C (de) Verfahren zur Erzeugung glatter, glaenzender Niederschlaege von Metallen auf einen Grundkoerper durch Elektrolyse
DE1496843A1 (de) Elektroabscheidungsverfahren
DE1094245B (de) Bleidioxyd-Elektrode zur Verwendung bei elektrochemischen Verfahren
DE2328538A1 (de) Verfahren zur herstellung gefaerbter oxidschichten auf aluminium oder aluminiumlegierungen
EP0090268B1 (fr) Procédé d'anodisation de produits en aluminium et pièces aluminées
DE19800922A1 (de) Nickel- oder Nickellegierungs-Galvanisierbad und Galvanisierverfahren unter Anwendung desselben
DE1671426A1 (de) Elektrode und Verfahren zu ihrer Herstellung
DE2508130A1 (de) Gold-platin-plattierbad
DE3315062C2 (fr)
DE10006128B4 (de) Plattierungsbad zum Abscheiden einer Sn-Bi-Legierung und dessen Verwendung
DD112145B1 (de) Verfahren und vorrichtung zur erzeugung von wischfesten haftbelaegen auf metallfolien, insbesondere auf kupferfolien
DE1922598A1 (de) Gegenstand aus einem Metallsubstrat,auf den eine Nickel-Zinn-Legierung abgeschieden ist,sowie Verfahren zu dessen Herstellung
DE1496915A1 (de) Verfahren zum Aufbringen eines metallisches Zink enthaltenden Zinkphosphatueberzuges auf eine eiserne Oberflaeche
EP0331730A1 (fr) Procede pour appliquer un revetement composite d'oxyde de nickel-titane sur un support metallique
DE3347593C2 (fr)
DE10259362A1 (de) Verfahren zum Abscheiden einer Legierung auf ein Substrat
DE843489C (de) Verfahren zum Elektroplattieren mit Indium
DE2020840B2 (de) Galvanisches bad zum abscheiden von nickel- oder nickellegierungsueberzuegen
DE2522926A1 (de) Verfahren zur herstellung metallplattierten langgestreckten aluminiummaterials
EP0360863A1 (fr) Procede et electrode en oxyde de nickel pour appliquer un revetement composite d'oxyde de nickel sur un support metallique
DE1919932A1 (de) Verfahren zur gemeinsamen galvanischen Abscheidung von Metallen und Nichtmetallen
DE2728650C2 (de) Verfahren zur Vorbehandlung von Stahloberflächen für das nachfolgende Überziehen
DE2232903A1 (de) Titanelektroden fuer die kupferraffination
DE2943399C2 (de) Verfahren und Zusammensetzung zur galvanischen Abscheidung von Palladium
DE2114543A1 (de) Verfahren zur Herstellung von Elektroden und deren Verwendung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19890426

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR GB LI

A4 Supplementary search report drawn up and despatched

Effective date: 19900129

17Q First examination report despatched

Effective date: 19910823

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19920103