EP2729604A2 - Verfahren zur herstellung einer haftvermittelnden schicht auf einer oberfläche eines titanwerkstoffs - Google Patents
Verfahren zur herstellung einer haftvermittelnden schicht auf einer oberfläche eines titanwerkstoffsInfo
- Publication number
- EP2729604A2 EP2729604A2 EP12791239.2A EP12791239A EP2729604A2 EP 2729604 A2 EP2729604 A2 EP 2729604A2 EP 12791239 A EP12791239 A EP 12791239A EP 2729604 A2 EP2729604 A2 EP 2729604A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- range
- concentration
- titanium material
- layer
- adhesion
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/26—Anodisation of refractory metals or alloys based thereon
Definitions
- the invention relates to a method for producing an adhesion-promoting layer on a surface of a titanium material, to a process-promoting adhesion-promoting layer on the surface of the titanium material and to the use of an alkaline solution.
- adhesion-promoting layers on a surface of a titanium material is known.
- organic materials such as, for example, adhesive, lacquer, sealant and / or the like can be bonded to the titanium material.
- the adhesion-promoting layer on the surface of the titanium material can be produced, for example, by means of an anodic oxidation, ie, for example, consist of an oxide layer. This oxide layer can be used as the primer layer for subsequent coating of the titanium material with the organic material.
- US 4,473,446 discloses a method of surface treating titanium parts prior to bonding by anodizing in a hydrofluoric acid bath at an anodization voltage between one volt and 5 volts.
- US 4,394,224 discloses a method for treating titanium parts or titanium alloy parts to produce an adhesion-promoting oxide layer. It is the steps of applying to the surface and treating the surface with a mixture of aqueous solutions of sodium hydroxide and hydrogen peroxide, maintaining the applied mixture within a temperature range in which the hydrogen peroxide is relatively stable and causing an increased oxidation rate on the surface region.
- DE 34 27 543 A1 relates to an alkaline bath for treating titanium. The bath consists of an alkali hydroxide, a titanium complexing agent and an impurity complexing agent.
- US 3,907,609 discloses a chemical conversion process and composition for producing an adhesive conversion coating on titanium and titanium alloy. requirements. US Pat. No. 5,814,137 and US Pat. No.
- 6,037,060 relate to a surface treatment, preferably for titanium and aluminum alloys, for forming a sol-gel film which adheres to the metal surface by means of covalent bonds, in order to produce a strong and durable adhesive bond between the surface Metal and an organic adhesive without the use of toxic chemicals and significantly reducing and / or eliminating rinse water requirements of conventional anodization and / or etching processes.
- DE 38 02 043 C1 relates to a method for preparing a metal surface.
- DE 10 2006 045 951 A1 relates to a process for the chemical modification and / or activation of solid surfaces.
- the object of the invention is to provide an alternative method for producing an adhesion-promoting layer on a surface of a titanium material, for the implementation of which only or at least predominantly environmentally friendly chemicals are needed.
- the object is achieved by a method according to claim 1.
- the method for producing an adhesion-promoting layer on a surface of a titanium material comprises introducing the surface into an aqueous alkaline solution comprising sodium hydroxide having a concentration in a range of 100-300 g / l, Sodium tartrate having a concentration in a range of 20-200 g / l, methylglycinediacetic acid Na3 having a concentration in a range of 5 g / l - 60 g / l, pentasodium triphosphate having a concentration in a range of 2 g / l
- Sodium hydroxide is preferably at a concentration in the range of 150
- Sodium tartrate is preferably at a concentration in a range of 20-200 g / l, more preferably 60-140 g / l, 75-125 g / l, 85-110 g / l, 90-105 g / l, especially of 00 g / l.
- Methylglycinediacetic acid Na3 is preferably present at a concentration in the range of 10-50 g / l, more preferably 15-40 g / l, 20-35 g / l, 25-33 g / l, 28-32 g / l, especially of 30 g / l before.
- Pentasodium triphosphate is preferably present at a concentration of 3-17 g / l, more preferably 4.5-13 g / l, or 6-10 g / l, or 7-8 g / l, especially 7.5 g / l ,
- concentration ranges or concentrations of one of the constituents of the solution may be combined with any concentration range or concentration of any other constituent. It has been found that with the aid of an anodic oxidation of the surface of the titanium material in the specified alkaline solution, an adhesion-promoting layer formed as an oxide layer can be created on the surface of the titanium material, which has at least equally good adhesion-promoting properties in comparison with the prior art.
- an adhesion-promoting layer formed as an oxide layer can be created on the surface of the titanium material, which has at least equally good adhesion-promoting properties in comparison with the prior art.
- exclusively or at least predominantly environmentally friendly ingredients are necessary.
- Sodium hydroxide contains Na + ions, which are known from conventional saline.
- Pentasodium triphosphate also known as triphosphate, is a component of biological compounds such as adenosine triphosphate.
- Methylglycinediacetic acid Na 3 also known as the sodium salt of methylglycinediacetic acid, is used in particular as a cleaning agent, in particular as a dishwashing detergent, and is insofar harmless from an environmental point of view.
- Methylglycinediacetic acid is also known as MGDA.
- Sodium tartrate is a sodium salt of tartaric acid, also approved as a food additive and therefore also particularly harmless from an environmental point of view. The sodium tartrate acts as a titanium complexing agent in the alkaline solution and can thus advantageously improve the return properties.
- Methylglycinediacetic acid Na 3 acts as
- the alkaline solution is completely fluoride-free and nevertheless allows optimum pretreatment of the surface of the titanium material for long-term stability, high-strength bonds of organic coatings.
- a titanium material may be understood to be pure titanium or a titanium alloy, for example a titanium alloy with the name Ti6Al4V.
- the anodization is advantageously carried out with a voltage in a range of 2 to 50 V, preferably 3 to 45 V, 5 to 35 V, 7 to 25 V, 9 to 20 V, 9 to 15 V, 10 - 12 V, specially made by 10 V.
- the advantageous oxide layer can be produced.
- the anodic oxidation of the surface is advantageously carried out for a period of time in which the advantageous adhesion-promoting layer can be produced on the surface of the titanium material. The period of time is in a range of 5 to 60 minutes, preferably 8 to 50 minutes, 1 to 40 minutes, 1 to 30 minutes, 18 to 25 minutes, 19 to 22 minutes, especially 20 minutes.
- the anodic oxidation is advantageously provided at a maximum current density at which the advantageous adhesion-promoting layer can be produced on the surface of the titanium material.
- the maximum current density is in a range of 0.2 - 10 A / dm 2 , preferably 0.4 - 8 A / dm 2 , 0.6 - 4 A / dm 2 , 0.8 - 2 A / dm 2 , 1 , 0 - 1, 5 A / dm 2 , 1, 1 - 1, 3 A / dm 2 , especially of 1, 2 A / dm 2 .
- the anodization is advantageous at a temperature at which the advantageous adhesion-promoting layer can be produced on the surface of the titanium material.
- the temperature is in a range of 5 to 60 ° C, preferably 10 to 50 ° C, 15 to 40 ° C, 20 to 35 ° C, 25 to 33 ° C, 28 to 32 ° C, especially 30 ° C.
- anodic oxidation of the surface of the alkaline solution and thereby the generation of an oxide layer of the layer thickness in a range of 50-600 nm, preferably 70-400 nm, 100-250 nm, especially of 150 nm are provided.
- a particularly good adhesion promotion can be generated at the specified layer thickness.
- the object is also achieved by an adhesion-promoting layer on a surface of a titanium material, which can be produced or produced according to a previously described embodiment.
- the surface of the titanium material has in particular a porous nanostructure with juxtaposed elevations with undercuts and in particular an interference coloration.
- the individual structures are of the order of 50-300 nm.
- the adhesion-promoting layer on the surface of the titanium material can be coated and / or provided with organic material for long-term stability and with particularly good adhesive properties.
- it can be recognized by means of interference coloring that the desired adhesion-promoting layer is actually present on the surface of the titanium material or that the titanium material has the adhesion-promoting layer on its surface.
- the object is also achieved by a use of an aqueous alkaline solution according to claim 13 in a method described above. This results in the advantages described above.
- Fig. 1 is a schematic view of an apparatus for performing a
- FIG. 2 shows a plan view of an oxide layer nanostructured by means of anodic oxidation on the surface of a titanium material
- FIG. 3 shows a cryogenic fracture of the surface shown in FIG. 2 on the titanium material.
- FIG. 1 shows a schematic view of a device 1 for producing an adhesion-promoting layer on a surface 3 of a titanium material 5.
- the device 1 has a bath 7 with an electrolyte 9.
- the electrolyte 9 comprises sodium hydroxide, sodium tartrate, methylglycinediacetic acid Na 3 and pentasodium triphosphate in an aqueous solution.
- the titanium material 5 and the bath 7 are connected to an electrical energy source 11, wherein a circuit is closed via the electrolyte 9 of the bath 7.
- the electrical energy source 1 1 supplies a voltage 13, which causes a current 15 in the closed circuit through the electrolyte 9.
- control and / or regulating devices for adjusting the voltage 13 and / or the current 15 may be provided.
- an oxide layer 17 shown in FIGS. 2 and 3 can be produced on the surface 3 of the titanium material 5 by anodizing.
- Scales are shown in Figures 2 and 3 are each marked with a line that are labeled with a length in nm.
- the adhesion-promoting layer is produced on the surface 3 of the titanium material 5.
- the surface 3 is first introduced into the alkaline solution or the electrolyte 9 containing bath 7, for example, by at least partial immersion of the titanium material 5 in the electrolyte 9.
- the voltage between the 3 and the electrolyte 9 Titanium material 5 for a predetermined period of time for the preparation of the layer by anodic oxidation of the surface 3 of the titanium material 5 produced.
- FIG. 2 shows a thirst for the surface 3 of the titanium material 5.
- FIG. 3 shows a cryobreak of the titanium material 5 together with the surface 3, wherein the oxide layer 17 can be seen.
- a thickness of the oxide layer 17 is symbolized in Figure 3, which is approximately 150 nm.
- the oxide layer 17 has a pronounced microporous nanostructure, with these bulbous outgrowths arranged next to one another.
- the bulbous outgrowths have a dimension of less than 300 nm, in particular less than 250 nm, in particular less than 200 nm, in particular less than 150 nm, preferably less than 50 nm to 100 nm, and form an advantageous microporous surface.
- the bath 7 with the electrolyte 9 of the composition is mixed with 240 g / l sodium hydroxide, 100 g / l sodium tartrate, 30 g / l methylglycinediacetic acid. Na 3 , and 7.5 g / l of pentasodium triphosphate filled.
- the surface 3 of the titanium material 5 is at least partially introduced into the bath 7, in particular immersed.
- the voltage 13 is applied with 10 V by means of the electric power source 1 1.
- the current 15 is adjusted so that a current density of at most 1.2 A / dm 2 occurs on the surface 3 of the titanium material 5.
- the voltage 13 and the current 15 and thus the current density of 1, 2 A / dm 2 are maintained for a period of 20 minutes.
- the bath 7 is heated to a temperature of 30 ° C.
- a heater and / or cooling can be provided.
- the desired nanostructured surface 3, ie the oxide layer 17, can be achieved in a completely fluoride-free process for pretreatment of the titanium material 5 in order to achieve long-term stable, high-strength bonds of organic coatings.
- the described porous surface morphology can be produced on the titanium material 5.
- This can be adherent coated, for example with organic materials such as adhesive, paint, sealant and / or the like.
- the electrolyte 9 is not only fluoride-free, but contains exclusively or at least predominantly environmentally friendly ingredients that are particularly biodegradable.
- the interference coloring can serve as proof of the treatment carried out and / or as an identification feature for corresponding treated components made of the titanium material 5.
- the oxide layer 17 on the surface 3 of the titanium material 5 can also be used for bonding biological material, for example on implants.
- the solution has at least in traces and / or as at least partial replacement of existing ions further constituents, in particular ions of the same period of a periodic table.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Chemical Treatment Of Metals (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201110106764 DE102011106764B4 (de) | 2011-07-05 | 2011-07-05 | Verfahren zur Herstellung einer haftvermittelnden Schicht auf einer Oberfläche eines Titanwerkstoffs durch anodische Oxidation , Verwendung einer Lösung für die anodische Oxidation und haftvermittelnde Schicht |
| PCT/IB2012/001944 WO2013005114A2 (de) | 2011-07-05 | 2012-07-13 | Verfahren zur herstellung einer haftvermittelnden schicht auf einer oberfläche eines titanwerkstoffs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2729604A2 true EP2729604A2 (de) | 2014-05-14 |
| EP2729604B1 EP2729604B1 (de) | 2016-10-12 |
Family
ID=47226215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP12791239.2A Active EP2729604B1 (de) | 2011-07-05 | 2012-07-13 | Verfahren zur herstellung einer haftvermittelnden schicht auf einer oberfläche eines titanwerkstoffs |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20140151235A1 (de) |
| EP (1) | EP2729604B1 (de) |
| DE (1) | DE102011106764B4 (de) |
| WO (1) | WO2013005114A2 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013017320A1 (de) * | 2013-10-18 | 2015-04-23 | Airbus Defence and Space GmbH | Verfahren zum Trennen stoffschlüssig verbundener Materialien |
| US9963662B2 (en) * | 2015-04-27 | 2018-05-08 | Seacole-CRC, LLC | Cleaning composition and method for processing equipment |
| DE102018005156A1 (de) * | 2018-06-29 | 2020-01-02 | Airbus Operations Gmbh | Zubereitung zur Oberflächenvorbehandlung durch chemische Konversion der Oxidschichten von Titan oder Titanlegierungen |
| RU2758704C1 (ru) * | 2020-12-08 | 2021-11-01 | Андрей Петрович Орлов | Способ обработки тонких листов из титана |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3400058A (en) * | 1965-09-21 | 1968-09-03 | Boeing Co | Electrochemical process for andic coating of metal surfaces |
| US3907609A (en) * | 1974-02-14 | 1975-09-23 | Mc Donnell Douglas Corp | Conversion coating for titanium and titanium base alloys |
| US4394224A (en) * | 1980-04-24 | 1983-07-19 | British Aerospace Public Limited Company | Treatment of titanium prior to bonding |
| US4473446A (en) * | 1981-05-01 | 1984-09-25 | The Boeing Company | Chromic acid-fluoride anodizing surface treatment for titanium |
| DE3206470A1 (de) * | 1982-02-23 | 1983-09-01 | Hoechst Ag, 6230 Frankfurt | Verfahren zur herstellung von traegermaterialien fuer offsetdruckplatten |
| DE3427543A1 (de) * | 1983-12-01 | 1985-07-04 | Messerschmitt-Bölkow-Blohm GmbH, 2800 Bremen | Verfahren zur oberflaechenbehandlung von werkstuecken aus titan |
| FR2556011B1 (fr) * | 1983-12-01 | 1992-08-07 | Messerschmitt Boelkow Blohm | Procede de traitement de surface de pieces en titane |
| DE3802043C1 (en) | 1988-01-25 | 1989-07-06 | Espe Stiftung & Co Produktions- Und Vertriebs Kg, 8031 Seefeld, De | Process for preparing a metal surface for bonding to plastic by applying a silicon-containing layer, and use of silicon-containing material |
| JP3274232B2 (ja) * | 1993-06-01 | 2002-04-15 | ディップソール株式会社 | 錫−ビスマス合金めっき浴及びそれを使用するめっき方法 |
| US6037060A (en) | 1996-11-04 | 2000-03-14 | The Boeing Company | Sol for bonding expoxies to aluminum or titanium alloys |
| US5814137A (en) | 1996-11-04 | 1998-09-29 | The Boeing Company | Sol for coating metals |
| DE102006045951A1 (de) | 2005-09-30 | 2007-04-12 | Sura Instruments Gmbh | Verfahren zur chemischen Modifizierung und/oder Aktivierung von Festkörperoberflächen |
| US20100025252A1 (en) * | 2006-09-27 | 2010-02-04 | Shinsuke Mochizuki | Ceramics coating metal material and manufacturing method of the same |
| JP5612531B2 (ja) * | 2010-04-30 | 2014-10-22 | 富士フイルム株式会社 | 平版印刷版用支持体、および平版印刷版原版 |
-
2011
- 2011-07-05 DE DE201110106764 patent/DE102011106764B4/de not_active Expired - Fee Related
-
2012
- 2012-07-13 US US14/130,817 patent/US20140151235A1/en not_active Abandoned
- 2012-07-13 EP EP12791239.2A patent/EP2729604B1/de active Active
- 2012-07-13 WO PCT/IB2012/001944 patent/WO2013005114A2/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2013005114A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013005114A2 (de) | 2013-01-10 |
| US20140151235A1 (en) | 2014-06-05 |
| WO2013005114A3 (de) | 2013-04-04 |
| DE102011106764A1 (de) | 2013-01-10 |
| DE102011106764B4 (de) | 2013-03-14 |
| EP2729604B1 (de) | 2016-10-12 |
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