EP0887432A2 - Verbessertes Plasmaspruhen - Google Patents
Verbessertes Plasmaspruhen Download PDFInfo
- Publication number
- EP0887432A2 EP0887432A2 EP98303270A EP98303270A EP0887432A2 EP 0887432 A2 EP0887432 A2 EP 0887432A2 EP 98303270 A EP98303270 A EP 98303270A EP 98303270 A EP98303270 A EP 98303270A EP 0887432 A2 EP0887432 A2 EP 0887432A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- plasma
- reaction chamber
- plasma jet
- gas
- reactive gas
- 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- Withdrawn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
- 238000007750 plasma spraying Methods 0.000 title claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 24
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000843 powder Substances 0.000 claims abstract description 19
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 13
- 239000007789 gas Substances 0.000 claims description 30
- 238000000576 coating method Methods 0.000 claims description 15
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 239000004215 Carbon black (E152) Substances 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000011651 chromium Substances 0.000 claims description 5
- 239000010941 cobalt Substances 0.000 claims description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 5
- 229930195733 hydrocarbon Natural products 0.000 claims description 5
- 150000002430 hydrocarbons Chemical class 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 239000012495 reaction gas Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910000531 Co alloy Inorganic materials 0.000 claims description 2
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 229910052727 yttrium Inorganic materials 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 description 7
- 238000005507 spraying Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- -1 for example Natural products 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 150000001247 metal acetylides Chemical class 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- 229910000946 Y alloy Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000010290 vacuum plasma spraying Methods 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/134—Plasma spraying
Definitions
- the present invention relates to the plasma spraying of a substrate with a coating or coatings which exhibit enhanced properties of hardness and/or wear resistance.
- Conventional plasma spraying involves injecting powder particles typically in the range of 20 - 150 ⁇ m into a plasma arc generated by a plasma gun or torch. The powder particles become molten or partially molten and are accelerated towards the substrate to be coated. Impact with the substrate causes the powder particles to solidify rapidly and coalesce to form a coating.
- US Patent No 5217747 discloses an apparatus for the plasma spraying of a substrate which includes a reaction chamber at one end of which is located a d.c. plasma torch. Means is provided for the supply of a plasma forming gas under pressure to the torch such that a plasma jet is produced which extends along the length of the reaction chamber. Aluminium powder is introduced into the plasma jet adjacent the plasma torch.
- an apparatus for the plasma spraying of a substrate comprises a reaction chamber at or adjacent one end of which is located an anode electrode and space therefrom a cathode electrode, means for applying a direct current between the electrodes, means for supplying a plasma forming gas under pressure between the electrodes such that, in use a plasma jet is produced which extends along the length of the reaction chamber from the said one end, means for supplying a powder material into the plasma jet and further means for injecting a reactive gas into the plasma jet.
- the reactive gas is a hydrocarbon, for example, methane.
- the powder material is a mixture of 80% nickel and 20% chromium by weight.
- the powder material is an alloy of M, Cr, Al, Y where M is a metal selected from nickel, cobalt, an alloy of nickel/cobalt or iron.
- an apparatus 1 for use in the coating of a substrate 2 includes a reaction chamber 3 having one or more through ports 4 arranged at or adjacent the left hand end (as shown) of the reaction chamber 3 for the passage therethrough of a reactive gas.
- the reaction chamber 3 is attached to a plasma spray gun or torch at its left hand end (as shown) which plasma spray gun includes an anode electrode 5 and a cathode electrode 6.
- the anode electrode 5 is formed as a nozzle and a direct current power source (not shown) connects the electrodes 5, 6 in a manner known per se.
- An inlet port 8 is provided in the gun for the passage therethrough of powder material again as known per se.
- a reaction chamber 3 was attached to a Miller Thermal Inc. model SG-100 plasma gun and the following table illustrates the spraying parameters.
- M Cr Al Y are alloys of chromium, aluminium and yttrium together with another metal, for example, nickel, cobalt, an alloy of these or iron.
- the reactive gas, that is methane reduces the possibility of oxide formation and may promote the formation of carbides.
- the reaction chamber is a consumable, made essentially of graphite.
- the reaction chamber 3 it has been found necessary still to inject a reaction gas through the ports 4.
- Tables III and IV illustrate the manner in which the oxide content of air sprayed plasma coatings is reduced by the injection of a reaction gas into the reaction chamber 3.
- REACTIVE PLASMA Ni - Cr No Reactive Gas With Reactive Gas B
- B A Oxygen (Wt %) 1.4 1.5 0.14 0.16 Hardness (Vickers) 212 206 452
- A 10cm
- B 15cm
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9712801 | 1997-06-19 | ||
| GBGB9712801.1A GB9712801D0 (en) | 1997-06-19 | 1997-06-19 | Improved plasma spraying |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0887432A2 true EP0887432A2 (de) | 1998-12-30 |
| EP0887432A3 EP0887432A3 (de) | 1999-01-20 |
Family
ID=10814479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98303270A Withdrawn EP0887432A3 (de) | 1997-06-19 | 1998-04-28 | Verbessertes Plasmaspruhen |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0887432A3 (de) |
| CA (1) | CA2237116A1 (de) |
| GB (1) | GB9712801D0 (de) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6428600B1 (en) | 1999-09-22 | 2002-08-06 | Flurschuetz Walter | Process for producing spheroidized hard material powder |
| US20130157040A1 (en) * | 2011-12-14 | 2013-06-20 | Christopher A. Petorak | System and method for utilization of shrouded plasma spray or shrouded liquid suspension injection in suspension plasma spray processes |
| CN109847673A (zh) * | 2017-11-30 | 2019-06-07 | 中国石油化工股份有限公司 | 一种电弧等离子体反应器及重油轻质化方法 |
| CN114786804A (zh) * | 2020-01-22 | 2022-07-22 | 韩国核融合能源研究院 | 导电性粉末的等离子体表面处理装置 |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1014383A (en) * | 1962-10-08 | 1965-12-22 | British Oxygen Co Ltd | Hard metal deposits |
| DE2155217A1 (de) * | 1971-11-06 | 1973-05-10 | Philips Patentverwaltung | Verfahren zur herstellung dielektrischer und/oder photoleitfaehiger schichten fuer den elektrostatischen druck bzw. elektrophotographie |
| FR2234382A1 (en) * | 1973-06-22 | 1975-01-17 | Metallisation Ste Nouvelle | Partially oxidised molybdenum coatings - deposited using plasma torch to give a surface of increased coefft of friction |
| EP0051869A1 (de) * | 1980-11-08 | 1982-05-19 | Metallisation Limited | Verfahren und Vorrichtung zum Spritzen metallischer Schichten |
| EP0246828A1 (de) * | 1986-05-18 | 1987-11-25 | Daido Tokushuko Kabushiki Kaisha | Verschleissfeste Gegenstände aus Titan oder aus einer Titanlegierung |
| WO1990013681A1 (de) * | 1989-05-04 | 1990-11-15 | Deutsche Forschungsanstalt für Luft- und Raumfahrt e.V. | Verfahren zum auftragen von keramischem material |
| WO1992019784A1 (fr) * | 1991-04-25 | 1992-11-12 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Procede et installation pour la formation de depot metallique par projection a l'arc electrique |
| DE4339345A1 (de) * | 1993-11-18 | 1995-05-24 | Difk Deutsches Inst Fuer Feuer | Verfahren zum Auftragen einer Hartstoffschicht mittels Plasmaspritzen |
| US5592927A (en) * | 1995-10-06 | 1997-01-14 | Ford Motor Company | Method of depositing and using a composite coating on light metal substrates |
| WO1997013884A1 (en) * | 1995-10-06 | 1997-04-17 | Ford Motor Company Limited | Method of depositing composite metal coatings |
-
1997
- 1997-06-19 GB GBGB9712801.1A patent/GB9712801D0/en not_active Ceased
-
1998
- 1998-04-28 EP EP98303270A patent/EP0887432A3/de not_active Withdrawn
- 1998-05-07 CA CA002237116A patent/CA2237116A1/en not_active Abandoned
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1014383A (en) * | 1962-10-08 | 1965-12-22 | British Oxygen Co Ltd | Hard metal deposits |
| DE2155217A1 (de) * | 1971-11-06 | 1973-05-10 | Philips Patentverwaltung | Verfahren zur herstellung dielektrischer und/oder photoleitfaehiger schichten fuer den elektrostatischen druck bzw. elektrophotographie |
| FR2234382A1 (en) * | 1973-06-22 | 1975-01-17 | Metallisation Ste Nouvelle | Partially oxidised molybdenum coatings - deposited using plasma torch to give a surface of increased coefft of friction |
| EP0051869A1 (de) * | 1980-11-08 | 1982-05-19 | Metallisation Limited | Verfahren und Vorrichtung zum Spritzen metallischer Schichten |
| EP0246828A1 (de) * | 1986-05-18 | 1987-11-25 | Daido Tokushuko Kabushiki Kaisha | Verschleissfeste Gegenstände aus Titan oder aus einer Titanlegierung |
| WO1990013681A1 (de) * | 1989-05-04 | 1990-11-15 | Deutsche Forschungsanstalt für Luft- und Raumfahrt e.V. | Verfahren zum auftragen von keramischem material |
| WO1992019784A1 (fr) * | 1991-04-25 | 1992-11-12 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Procede et installation pour la formation de depot metallique par projection a l'arc electrique |
| DE4339345A1 (de) * | 1993-11-18 | 1995-05-24 | Difk Deutsches Inst Fuer Feuer | Verfahren zum Auftragen einer Hartstoffschicht mittels Plasmaspritzen |
| US5592927A (en) * | 1995-10-06 | 1997-01-14 | Ford Motor Company | Method of depositing and using a composite coating on light metal substrates |
| WO1997013884A1 (en) * | 1995-10-06 | 1997-04-17 | Ford Motor Company Limited | Method of depositing composite metal coatings |
Non-Patent Citations (1)
| Title |
|---|
| G.M.HERTERICK: "gas selection in plasma spraying" WELDING JOURNAL, vol. 66, no. 2, February 1987, pages 27-30, XP002085707 miami,fl,usa * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6428600B1 (en) | 1999-09-22 | 2002-08-06 | Flurschuetz Walter | Process for producing spheroidized hard material powder |
| US20130157040A1 (en) * | 2011-12-14 | 2013-06-20 | Christopher A. Petorak | System and method for utilization of shrouded plasma spray or shrouded liquid suspension injection in suspension plasma spray processes |
| CN109847673A (zh) * | 2017-11-30 | 2019-06-07 | 中国石油化工股份有限公司 | 一种电弧等离子体反应器及重油轻质化方法 |
| CN109847673B (zh) * | 2017-11-30 | 2021-09-07 | 中国石油化工股份有限公司 | 一种电弧等离子体反应器及重油轻质化方法 |
| CN114786804A (zh) * | 2020-01-22 | 2022-07-22 | 韩国核融合能源研究院 | 导电性粉末的等离子体表面处理装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9712801D0 (en) | 1997-08-20 |
| CA2237116A1 (en) | 1998-12-19 |
| EP0887432A3 (de) | 1999-01-20 |
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