EP1507026A1 - Verfahren zur selektiven oder vollständigen Inertisierung von Werkstücken und Anlagenteilen mittels nicht reaktiver Beschichtungen - Google Patents
Verfahren zur selektiven oder vollständigen Inertisierung von Werkstücken und Anlagenteilen mittels nicht reaktiver Beschichtungen Download PDFInfo
- Publication number
- EP1507026A1 EP1507026A1 EP03018449A EP03018449A EP1507026A1 EP 1507026 A1 EP1507026 A1 EP 1507026A1 EP 03018449 A EP03018449 A EP 03018449A EP 03018449 A EP03018449 A EP 03018449A EP 1507026 A1 EP1507026 A1 EP 1507026A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- reactive layer
- reactive
- workpieces
- metal
- 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- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000007747 plating Methods 0.000 title description 4
- 238000000576 coating method Methods 0.000 claims abstract description 24
- 239000000758 substrate Substances 0.000 claims abstract description 22
- 239000011248 coating agent Substances 0.000 claims abstract description 21
- 229910052751 metal Inorganic materials 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 20
- 150000002739 metals Chemical group 0.000 claims abstract description 12
- 238000000151 deposition Methods 0.000 claims abstract description 9
- 230000008021 deposition Effects 0.000 claims abstract description 8
- 238000005234 chemical deposition Methods 0.000 claims abstract description 3
- 239000003792 electrolyte Substances 0.000 claims description 20
- 238000001465 metallisation Methods 0.000 claims description 17
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- 230000004913 activation Effects 0.000 claims description 8
- 229910052804 chromium Inorganic materials 0.000 claims description 7
- 239000011651 chromium Substances 0.000 claims description 7
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 150000002736 metal compounds Chemical class 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- 239000012670 alkaline solution Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 239000011135 tin Substances 0.000 claims description 2
- 229910052718 tin Inorganic materials 0.000 claims description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims 1
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 239000000956 alloy Substances 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 229910052797 bismuth Inorganic materials 0.000 claims 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims 1
- 239000011133 lead Substances 0.000 claims 1
- 229910052763 palladium Inorganic materials 0.000 claims 1
- 229910052697 platinum Inorganic materials 0.000 claims 1
- 230000010287 polarization Effects 0.000 claims 1
- 229910052725 zinc Inorganic materials 0.000 claims 1
- 239000011701 zinc Substances 0.000 claims 1
- 230000003213 activating effect Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 238000002161 passivation Methods 0.000 description 4
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 3
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 238000005844 autocatalytic reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 150000001844 chromium Chemical class 0.000 description 1
- 150000001845 chromium compounds Chemical class 0.000 description 1
- BFGKITSFLPAWGI-UHFFFAOYSA-N chromium(3+) Chemical class [Cr+3] BFGKITSFLPAWGI-UHFFFAOYSA-N 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- -1 fluoride compound Chemical class 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229940098779 methanesulfonic acid Drugs 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
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
- C25D11/38—Chromatising
-
- 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
- C23C18/1601—Process or apparatus
- C23C18/1603—Process or apparatus coating on selected surface areas
- C23C18/1605—Process or apparatus coating on selected surface areas by masking
-
- 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
Definitions
- This invention relates to a process for selective or complete Inertizing of substrates, workpieces and plant components by means of non-reactive Coatings in the chemical deposition process of metals.
- electroless plating processes for a long time known.
- electroless or even chemical metallization is a chemical surface finishing of almost all metals and many To understand non-conductors. It differs in its chemical and mechanical features substantially of galvanic applied Metal coatings.
- the electroless coating based on metals on one autocatalytic process. In such a coating process finds a Reaction takes place on catalytically active surfaces.
- the in the Depositing bath electrolytes
- the invention is therefore based on the object , a process for the selective or complete formation of an inert coating on substrates, materials or equipment parts on which a chemical Metallabscheideprozeß can not start to provide in the process of electroless deposition of metals, wherein an undesirable coating certain areas of the Workpieces or plant parts without considerable cost and time consuming effort is avoided.
- the object is achieved by a method for selective or complete inerting of substrates, workpieces or plant parts in the Separation process of metals solved that the treatment of a substrate, Workpiece or plant part, with an activation solution and the electrolytic Deposition of an adherent inertizing layer on non-metallizing Areas.
- a selective or complete inert coating according to the invention can advantageously carried out on a variety of substrates.
- one is Coating of workpieces or plant components made of metal and / or Metal compounds or plastics possible, the plastics before metallized by other methods. This metallization can already be done partially or selectively.
- Another advantage of the method is that the Separation process of metals by a passivation of the invention used plant components can be made more economical in addition. So is advantageously by the inerting of the electrolyte to the electroless Metallization containing the average life of the container Electrolyte bath considerably extended and the implementation of the metallization simplifies, among other things, the application of an anodic potential for Maintaining the passive state is eliminated. In addition, the Limited security measures and minimized costs accordingly become.
- plant components consisting of Metal and / or metal compounds, preferably steel, particularly preferred Stainless steel, such as the containers for the Abscheidebäder or Racks for the workpieces to be coated with a non-reactive surface rendered inert.
- Such inertization allows the use of far and wide less expensive materials like conventional steels instead of the very expensive ones Stainless steels.
- the substrates are activated prior to inerting. This is special necessary for non-conductive substrates. Activation of the substrates may occur conventionally done. Advantageously, the activation takes place simultaneously with the inertization step. In this context, it has proved to be proven advantageous with the provided for inerting electrolyte Fluorides and / or fluorine-containing compounds to give a adequate activation of the material surface, in particular of To reach Angelober perennial and thus a sticky assignment with the Inertmaschines slaughter to ensure.
- the process of inerting is carried out by electrolytic deposition of a non-reactive coating of a suitable electrolyte, which preferably has chromium, under application of a cathode current.
- a cathode current typically, for the deposition of chromium-containing layers (especially in so-called chromium baths) at temperatures in the range of 40 to 70 ° C current densities in the range of 10 to 50 A / dm 2 is required.
- chromium-containing layers especially in so-called chromium baths
- current densities in the range of 10 to 50 A / dm 2 is required.
- this results in a considerable total current which does not represent an appropriate expense in every case or for each inertization process, it has proved to be advantageous to deposit the inerting layer in a low current density range.
- an electrolyte which at low temperatures, preferably in the range of 15 to 40 ° C, a sticky assignment with a non-reactive coating according to the invention below a current density of 10 A / dm 2 , preferably below 5 A / dm 2 allows ,
- chromium wheels based on chromium (III) compounds of a different construction can also be used, for example baths from the company Enthone named Trichrolyte.
- a subsequent electroless metallization of the non - rendered areas of the Substrate can be made in a conventional manner.
- an electrolyte is used, which is usually in the electroless Metallization application finds.
- the selectively applied inerting layer can follow the electroless metallization in a simple manner without manual effort be removed. This can be done by immersion in a dilute acid, or if such acid poses a danger to the substrate by immersion in an alkaline solution using an anodic current up to complete removal of the passivation layer.
- the electrolyte according to the invention for producing a selective non-reactive Coating on a substrate in the deposition process of metals continues in the Basically made of a fluoride and / or fluoride compound Activation solution and one or more chromium salts, preferably Chromic acid or dreskyrtige chromium compounds together.
- Another application example is the inside tinning of Badarmaturen after an outside chrome plating this in process according to the invention or with the electrolytes according to the invention.
- Ball valves by selective inerting in the places the aggressive media are exposed to nickel plating, while the surfaces are the abrasive wear can be chrome plated.
- heat exchanger elements made of copper or Copper alloys for gas heaters selectively with an inert chrome layer be coated while cavities for corrosion protection reasons with a be provided chemical nickel coating.
- the chrome outdoor areas are Resistant to hot combustion gases while the water-bearing Interior against corrosion by water or other heat transfer media is stable.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Electrochemistry (AREA)
- Chemically Coating (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
Description
Claims (12)
- Verfahren zur selektiven oder vollständigen Beschichtung von Substraten, Werkstücken oder Anlagenteilen mit einer nicht reaktiven Beschichtung im chemischen Abscheideprozeß von Metallen umfassend einen Aktivierungsschritt und die elektrolytische Abscheidung einer haftfesten nicht reaktiven Schicht auf nicht zu metallisierenden Bereichen des Substrats.
- Verfahren gemäß Anspruch 1, dadurch gekennzeichnet, daß das chemisch abgeschiedene Metall mindestens ein Metall der Gruppe bestehend aus Kupfer, Nickel, Zink, Zinn, Blei, Wismut, Palladium, Silber, Gold oder Platin ist.
- Verfahren nach einem oder mehreren der Ansprüche 1 und 2, dadurch gekennzeichnet, daß zur Aktivierung bevorzugt eine Fluoride enthaltene Lösung verwendet wird.
- Verfahren gemäß einem oder mehreren der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß als Substrate bevorzugt Werkstücke oder Anlagenteile aus Metall und/oder Metallverbindungen, Legierungen oder Kunststoffen verwendet werden.
- Verfahren nach einem oder mehreren der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß zur Beschichtung der nicht stromlos zu metallisierenden Bereiche eine Schicht aus einem Chrom aufweisenden Elektrolyten abgeschieden wird.
- Verfahren nach einem oder mehreren der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die nicht reaktive Schicht durch Anlegen eines Kathodenstroms an den zu beschichtenden Bereich des Substrates elektrolytisch abgeschieden wird.
- Verfahren nach einem oder mehreren der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die nicht reaktive Schicht in einem geringen Stromdichtebereich abgeschieden wird.
- Verfahren gemäß einem oder mehreren der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die nicht reaktive Schicht bei niedrigen Temperaturen abgeschieden wird.
- Verfahren nach einem oder mehreren der Ansprüche 1 bis 8, gekennzeichnet durch die anschließende stromlose Metallisierung der nicht mittels einer nicht reaktiven Schicht inertisierten Bereiche des Substrats.
- Verfahren nach einem oder mehreren der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die nicht reaktive Schicht gegebenenfalls im Anschluß an die stromlose Metallisierung entfernt wird.
- Verfahren nach einem oder mehreren der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die eventuelle Entfernung der nicht reaktiven Schicht im Anschluß an die stromlose Metallisierung mittels einer Säure erfolgt.
- Verfahren nach einem oder mehreren der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die eventuelle Entfernung der nicht reaktiven Schicht im Anschluß an die stromlose Metallisierung mittels einer alkalischen Lösung unter anodischer Polarisation erfolgt.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP03018449A EP1507026A1 (de) | 2003-08-14 | 2003-08-14 | Verfahren zur selektiven oder vollständigen Inertisierung von Werkstücken und Anlagenteilen mittels nicht reaktiver Beschichtungen |
| US10/919,034 US20050034996A1 (en) | 2003-08-14 | 2004-08-16 | Non-reactive coatings for inertization |
| CNA2004100577392A CN1598051A (zh) | 2003-08-14 | 2004-08-16 | 借助不反应涂层选择性或完全钝化工件和设备部件的方法 |
| JP2004236473A JP3987514B2 (ja) | 2003-08-14 | 2004-08-16 | 工作部材および装置部品を非反応性被覆により選択的にまたは完全に不活性化する方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP03018449A EP1507026A1 (de) | 2003-08-14 | 2003-08-14 | Verfahren zur selektiven oder vollständigen Inertisierung von Werkstücken und Anlagenteilen mittels nicht reaktiver Beschichtungen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1507026A1 true EP1507026A1 (de) | 2005-02-16 |
Family
ID=33560801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03018449A Withdrawn EP1507026A1 (de) | 2003-08-14 | 2003-08-14 | Verfahren zur selektiven oder vollständigen Inertisierung von Werkstücken und Anlagenteilen mittels nicht reaktiver Beschichtungen |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20050034996A1 (de) |
| EP (1) | EP1507026A1 (de) |
| JP (1) | JP3987514B2 (de) |
| CN (1) | CN1598051A (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019125747A (ja) | 2018-01-18 | 2019-07-25 | 株式会社東芝 | 半導体装置およびその製造方法 |
| US10668511B2 (en) * | 2018-03-20 | 2020-06-02 | Taiwan Semiconductor Manufacturing Co., Ltd. | Method of cleaning process chamber |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3443988A (en) * | 1965-05-06 | 1969-05-13 | Photocircuits Corp | Printed circuits,work holders and method of preventing electroless metal deposition |
| US3592744A (en) * | 1968-12-02 | 1971-07-13 | Macdermid Inc | Method of preventing rack plating in continuous plating cycle for nonconductive articles |
| GB1459569A (en) * | 1973-08-30 | 1976-12-22 | M & T Chemicals Inc | Chromium electro plating |
| US4139942A (en) * | 1977-12-16 | 1979-02-20 | The Gillette Company | Process for producing corrosion resistant carbon steel razor blades and products made thereby |
| US4699811A (en) * | 1986-09-16 | 1987-10-13 | Macdermid, Incorporated | Chromium mask for electroless nickel or copper plating |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2587651A (en) * | 1945-12-22 | 1952-03-04 | Floricel A Rojas | Method and means for the electro-deposition of chromium |
| US2570174A (en) * | 1947-11-12 | 1951-10-02 | Gen Electric | Metal cleaning and plating process |
| US3041257A (en) * | 1960-08-25 | 1962-06-26 | Westinghouse Electric Corp | Chromium electroplating |
| DE50015318D1 (de) * | 2000-11-11 | 2008-10-02 | Enthone | Verfahren zur elektrolytischen Abscheidung aus einer chromhaltigen Lösung |
-
2003
- 2003-08-14 EP EP03018449A patent/EP1507026A1/de not_active Withdrawn
-
2004
- 2004-08-16 CN CNA2004100577392A patent/CN1598051A/zh active Pending
- 2004-08-16 JP JP2004236473A patent/JP3987514B2/ja not_active Expired - Fee Related
- 2004-08-16 US US10/919,034 patent/US20050034996A1/en not_active Abandoned
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3443988A (en) * | 1965-05-06 | 1969-05-13 | Photocircuits Corp | Printed circuits,work holders and method of preventing electroless metal deposition |
| US3592744A (en) * | 1968-12-02 | 1971-07-13 | Macdermid Inc | Method of preventing rack plating in continuous plating cycle for nonconductive articles |
| GB1459569A (en) * | 1973-08-30 | 1976-12-22 | M & T Chemicals Inc | Chromium electro plating |
| US4139942A (en) * | 1977-12-16 | 1979-02-20 | The Gillette Company | Process for producing corrosion resistant carbon steel razor blades and products made thereby |
| US4699811A (en) * | 1986-09-16 | 1987-10-13 | Macdermid, Incorporated | Chromium mask for electroless nickel or copper plating |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1598051A (zh) | 2005-03-23 |
| JP3987514B2 (ja) | 2007-10-10 |
| JP2005060843A (ja) | 2005-03-10 |
| US20050034996A1 (en) | 2005-02-17 |
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