SE445932B - Procedure for applying a surface layer to objects of aluminium or aluminium alloy - Google Patents

Procedure for applying a surface layer to objects of aluminium or aluminium alloy

Info

Publication number
SE445932B
SE445932B SE8404761A SE8404761A SE445932B SE 445932 B SE445932 B SE 445932B SE 8404761 A SE8404761 A SE 8404761A SE 8404761 A SE8404761 A SE 8404761A SE 445932 B SE445932 B SE 445932B
Authority
SE
Sweden
Prior art keywords
aluminium
objects
procedure
applying
surface layer
Prior art date
Application number
SE8404761A
Other languages
Swedish (sv)
Other versions
SE8404761L (en
SE8404761D0 (en
Inventor
Alfred Serbinski
Waldemar Serbinski
Original Assignee
Alfred Serbinski
Waldemar Serbinski
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 Alfred Serbinski, Waldemar Serbinski filed Critical Alfred Serbinski
Priority to SE8404761A priority Critical patent/SE445932B/en
Publication of SE8404761D0 publication Critical patent/SE8404761D0/en
Priority to PCT/SE1985/000367 priority patent/WO1986001836A1/en
Priority to EP19850905002 priority patent/EP0194310A1/en
Priority to AU49641/85A priority patent/AU4964185A/en
Publication of SE8404761L publication Critical patent/SE8404761L/en
Priority to DK245986A priority patent/DK245986D0/en
Priority to FI862191A priority patent/FI862191A/en
Publication of SE445932B publication Critical patent/SE445932B/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J1/00—Pistons; Trunk pistons; Plungers
    • F16J1/01—Pistons; Trunk pistons; Plungers characterised by the use of particular materials
    • 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
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/10—Oxidising
    • 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
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/10—Oxidising
    • C23C8/16—Oxidising using oxygen-containing compounds, e.g. water, carbon dioxide
    • 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
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/24—Nitriding
    • 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
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/28—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases more than one element being applied in one step
    • 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
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/12—Light metals
    • C23G1/125—Light metals aluminium
    • 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
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
    • C23G1/22—Light metals
    • 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
    • C25D3/54—Electroplating: Baths therefor from solutions of metals not provided for in groups C25D3/04 - C25D3/50
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/48—After-treatment of electroplated surfaces
    • C25D5/50—After-treatment of electroplated surfaces by heat-treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

The invention is a procedure for applying a surface layer to objects of aluminium or aluminium alloy. A manganese coating is electrolytically applied to the object's surface after which the object is subjected to thermal treatment in a gas atmosphere, which supplies oxygen [O], sulfur [S] and nitrogen [N] to the manganese coating.

Description

8404761-2 Enligt uppfinningen har det visat sig möjligt att åstadkomma kraftig vidhäftning av en sådan manganbeläggning till underlaget av aluminium eller aluminiumlegering och att samtidigt ge beläggningen de förutnämnda goda egenskaperna beträffande beständighet mot slitage och friktion. Detta åstad- kommes genom uppfinningen genom värmebahandling av manganskiktet och införlivande av syre. svavel och kväve i detta. Vârmebehandlingen enligt uppfinningen genomföres företrädesvis vid en temperatur av 753-883 K. According to the invention, it has been found possible to provide strong adhesion of such a manganese coating to the substrate of aluminum or aluminum alloy and at the same time to give the coating the aforementioned good properties with respect to resistance to wear and friction. This is achieved by the invention by heat treatment of the manganese layer and incorporation of oxygen. sulfur and nitrogen in this. The heat treatment according to the invention is preferably carried out at a temperature of 753-883 K.

Värmebehandlingstiden är företrädesvis 0.5 - l0 timmar. lnförlivandet av syre. svavel och kväve i skiktet genomföras företrädesvis genom värmebehandling i en atmosfär som avger kväve. svavel och syre till manganskiktet under värme- behandlíngen. företrädesvis en atmosfär av ammoniak lNHal och svavel- dioxid (S021. lnförlivandet av syre. svavel och kväve i manganskiktet genom- föreslämpligen samtidigt med den förut-nämnda värmehehandlingen.The heat treatment time is preferably 0.5 - 10 hours. The incorporation of oxygen. sulfur and nitrogen in the layer are preferably carried out by heat treatment in an atmosphere which emits nitrogen. sulfur and oxygen to the manganese layer during the heat treatment. preferably an atmosphere of ammonia 1NHal and sulfur dioxide (SO

Lämpligen tillföras ammoniak och svaveldioxid till reaktionen i gasform genom separata rörledningar för att underlätta styrningen av processen. Den tillförda mängden S02 beror på föremålens storlek och är vanligen från 1.0 till några procent.Conveniently, ammonia and sulfur dioxide are added to the reaction in gaseous form through separate pipelines to facilitate the control of the process. The amount of SO2 added depends on the size of the objects and is usually from 1.0 to a few percent.

Med förfarandet enligt uppfinningen erhålles på ytan av aluminium och aluminiumlegeringar ett ytbeläggningskikt av komposittyp. som kännetecknas av hög hårdhet och mycket god vidhäftningsförmåga samt minskad friktions- koefficient.With the method according to the invention, a composite type coating layer is obtained on the surface of aluminum and aluminum alloys. which is characterized by high hardness and very good adhesion and reduced coefficient of friction.

Den maximala hârdheten i skiktet förekommer vanligen på ett visst avstånd från ytan. liksom vid nitreringsprocessen. och kan överstiga HV 0.01 - 900.The maximum hardness of the layer usually occurs at a certain distance from the surface. as well as in the nitration process. and may exceed HV 0.01 - 900.

Förfarandet enligt uppfinningen kan i princip användas på alla slags föremål av aluminium och aluminiumlegeringar. t.ex. på föremål för förbränninge- motorer. såsom explosions- och dieselmotorer. såsom kolvar och liknande. samt generellt för föremål av aluminium och aluminiumlegeringar som är utsatta för slitage och/eller skall uppvisa låg friktion.The method according to the invention can in principle be applied to all kinds of objects of aluminum and aluminum alloys. for example on articles of internal combustion engines. such as explosion and diesel engines. such as flasks and the like. and generally for objects of aluminum and aluminum alloys which are subject to wear and / or shall exhibit low friction.

Uppfinningen beskrivas närmare med följande utföringsexempel. 8404761-2 EXEMPEL l Underlag: aluminiumfñremål. som avfettas i lösning av: H20 273 ml NaaPüq 13.5 g Na0H 2.1 g NaZSiDa 10.5 g Temperatur 323 K under 5 minuter. Sedan sköljes föremålet i varmt och kallt vatten. därefter doppas det i en lösning av: HCI 0.530 I MnSOqåHZO 7 g H20 i.75 I Denna behandling genomföras vid en temperatur av 310 K och under 15-30 sekunder. Efter noggrann sköljning i vatten underkastas aluminiumföremålet direkt en elektrolytisk manganering med följande elektrolyt: Mnsolrsriéo zon g/l [NHq] 25014 75 g/l H20 beroende av elektrolytbehållarens volym.- Elektrolytens temperatur 263-288 K. pH - 7,0 Strömtäthet i 10-15] x 102 A/mz.The invention is described in more detail with the following exemplary embodiments. 8404761-2 EXAMPLE 1 Substrate: aluminum object. which is degreased in solution of: H 2 O 273 ml NaaPüq 13.5 g NaOH 2.1 g NaZSiDa 10.5 g Temperature 323 K for 5 minutes. Then rinse the object in hot and cold water. then it is dipped in a solution of: HCl 0.530 I MnSOqåHZO 7 g H 2 O i.75 I This treatment is carried out at a temperature of 310 K and for 15-30 seconds. After rinsing thoroughly in water, the aluminum object is immediately subjected to an electrolytic manganeseing with the following electrolyte: Mnsolrsriéo zone g / l [NHq] 25014 75 g / l H 2 O depending on the volume of the electrolyte container.- Electrolyte temperature 263-288 K. pH - 7.0 -15] x 102 A / mz.

Vid den elektrolytiska manganeringsprocessen använder man legerande anoder av: Sn 30 % Co 0.1! % resten Pb Det år nödvändigt att omröra elektrolyten kontinuerligt och att använda diafragma för att åtskilja anoden från katoden.In the electrolytic manganese process, alloying anodes of: Sn 30% Co 0.1 are used! % residue Pb It is necessary to stir the electrolyte continuously and to use the diaphragm to separate the anode from the cathode.

Direkt efter upptagningen från elektrolyten doppas föremålet i SX-ig lösning av: NaZCrZÜTZHZD 8404761-2 Efter elktrolytisk manganering underkastas aluminiumföremålet en samtidigt pågående syre [Gl-svavel [5}-kvâve (NJ-mâttnadsprocess i en atmosfär av ammoniak [NHSL svavaldioxid [S02] vid temperaturen H83 Kunder 3 timmars tid.Immediately after uptake from the electrolyte, the article is immersed in SX-ig solution of: NaZCrZÜTZHZD 8404761-2 ] at temperature H83 Customers 3 hours.

EXEMPEL 2 Underlag: alumíniumlegeringsföremål med sammansättningen: [Si - 12.1! %. Cu = 0.9 %. Mg - 1.3 76. Ni - 0.9 Z. Fe - 0.3 Z. resten All.EXAMPLE 2 Substrate: aluminum alloy articles having the composition: [Si - 12.1! %. Cu = 0.9%. Mg - 1.3 76. Ni - 0.9 Z. Fe - 0.3 Z. residues All.

Föremålet avfettas i samma lösning och på samma ätt som i exempel I.The object is degreased in the same solution and in the same manner as in Example I.

Sedan sköljes föremålet i varmt och kallt vatten och därefter doppas det i en lösning av: HNCla 75 75 volym HF 25 % volym Denna behandling genomföras vid en temperatur av 293 K och under 15-30 sekunder.Then the object is rinsed in hot and cold water and then dipped in a solution of: HNCla 75 75 volume HF 25% volume This treatment is carried out at a temperature of 293 K and for 15-30 seconds.

Direkt därefter sköljes föremålet noggrant i vatten och underkastas en elektrolytisk manganering. sammansättningen av elektrnlyten och villkoren âr detsamma som i exempel l.Immediately afterwards, the object is thoroughly rinsed in water and subjected to electrolytic manganese. the composition of the electrolyte and the conditions are the same as in Example 1.

Efter elektrolytisk manganering underkastas aIuminiumlegeringsföremålet en samtidigt pågående syre [OI-svavel [SI-kväve (NI-mättnadsprocess i en atmosfär av ammoniak [NHS] och svaveldioxid [S02] vid en temperatur av 753 K under 1D timmar.After electrolytic manganese, the aluminum alloy article is subjected to a simultaneous oxygen [OI-sulfur [SI nitrogen (NI saturation process in an atmosphere of ammonia [NHS] and sulfur dioxide [SO2] at a temperature of 753 K for 1D hours).

Claims (2)

1. 8404761-2 PATENTKRAV l. Fñrfarande för påfñring av ett ytskikt på föremål av aluminium och aluminiumlegeringar. k å n n e t e c k n a d därav att föremålets yta belâgges elektrolytiskt med ett manganskikt varefter det med mangansxki kt belagda föremålet underkastas en samtidigt pågående inverkan av syre. svavel och kväve genom behandling i en gasblandning av ammoniak och svaveldioxid vid temperaturen 753 - B83 K under 0.5 - lfl timmars tid så att manganskiktet strukturellt fñrbindas med föremålet.1. 8404761-2 PATENT REQUIREMENTS 1. Procedure for applying a surface layer to objects of aluminum and aluminum alloys. characterized by the fact that the surface of the object is electrolytically coated with a manganese layer, after which the object coated with manganese layer is subjected to a simultaneous effect of oxygen. sulfur and nitrogen by treatment in a gas mixture of ammonia and sulfur dioxide at a temperature of 753 - B83 K for a period of 0.5 - 1 så hours so that the manganese layer is structurally connected to the object. 2. Förfarande enligt patentkrav l. k â n n e t e c k n a t därav. att mängden svaveldiuxid âr från 1.0 till några procent av ammuniakvolymen.A method according to claim 1, k an n e t e c k n a t thereof. that the amount of sulfur dioxide is from 1.0 to a few percent of the ammonia volume.
SE8404761A 1984-09-24 1984-09-24 Procedure for applying a surface layer to objects of aluminium or aluminium alloy SE445932B (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE8404761A SE445932B (en) 1984-09-24 1984-09-24 Procedure for applying a surface layer to objects of aluminium or aluminium alloy
PCT/SE1985/000367 WO1986001836A1 (en) 1984-09-24 1985-09-24 Process for forming a surface layer on aluminum and aluminum alloy articles and so formed articles
EP19850905002 EP0194310A1 (en) 1984-09-24 1985-09-24 Process for forming a surface layer on aluminum and aluminum alloy articles and so formed articles
AU49641/85A AU4964185A (en) 1984-09-24 1985-09-24 Coating process
DK245986A DK245986D0 (en) 1984-09-24 1986-05-26 COATING PROCESS
FI862191A FI862191A (en) 1984-09-24 1986-05-26 BELAEGGNINGSFOERFARANDE.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8404761A SE445932B (en) 1984-09-24 1984-09-24 Procedure for applying a surface layer to objects of aluminium or aluminium alloy

Publications (3)

Publication Number Publication Date
SE8404761D0 SE8404761D0 (en) 1984-09-24
SE8404761L SE8404761L (en) 1986-03-25
SE445932B true SE445932B (en) 1986-07-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
SE8404761A SE445932B (en) 1984-09-24 1984-09-24 Procedure for applying a surface layer to objects of aluminium or aluminium alloy

Country Status (1)

Country Link
SE (1) SE445932B (en)

Also Published As

Publication number Publication date
SE8404761L (en) 1986-03-25
SE8404761D0 (en) 1984-09-24

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