EP3600704A1 - Vorrichtung und verfahren zum entfernen einer schicht von einem substrat - Google Patents
Vorrichtung und verfahren zum entfernen einer schicht von einem substratInfo
- Publication number
- EP3600704A1 EP3600704A1 EP18718515.2A EP18718515A EP3600704A1 EP 3600704 A1 EP3600704 A1 EP 3600704A1 EP 18718515 A EP18718515 A EP 18718515A EP 3600704 A1 EP3600704 A1 EP 3600704A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- plasma torch
- high voltage
- substrate
- plasma
- 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- Withdrawn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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0021—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by liquid gases or supercritical fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0035—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K10/00—Welding or cutting by means of a plasma
- B23K10/003—Scarfing, desurfacing or deburring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32082—Radio frequency generated discharge
- H01J37/32091—Radio frequency generated discharge the radio frequency energy being capacitively coupled to the plasma
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32431—Constructional details of the reactor
- H01J37/3244—Gas supply means
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/32—Plasma torches using an arc
- H05H1/34—Details, e.g. electrodes, nozzles
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/32—Plasma torches using an arc
- H05H1/34—Details, e.g. electrodes, nozzles
- H05H1/3421—Transferred arc or pilot arc mode
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/32—Plasma torches using an arc
- H05H1/34—Details, e.g. electrodes, nozzles
- H05H1/36—Circuit arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/006—Details of gas supplies, e.g. in an ion source, to a beam line, to a specimen or to a workpiece
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/32—Processing objects by plasma generation
- H01J2237/33—Processing objects by plasma generation characterised by the type of processing
- H01J2237/335—Cleaning
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/32—Plasma torches using an arc
- H05H1/42—Plasma torches using an arc with provisions for introducing materials into the plasma, e.g. powder or liquid
Definitions
- Plasma torch connected.
- a supply for process gas is over one
- Plasma torch connected.
- a supply of process gas is connected via a gas line to an inlet of the plasma torch.
- Plasma torch formed nozzle exits a plasma jet from the plasma torch.
- Plasma generating unit is in communication and positioned at the distal end.
- the plasma outlet is oriented at a downward angle, generally in the direction of the blade edge, the plasma outlet providing a plasma path directed substantially toward the blade edge.
- the plasma can be on the
- Be directed coating at an interface between the coating and an underlying substrate Upon impact of the plasma, the blade is moved into contact with the coating at the interface, the blade assisting separation of the coating from the substrate while one or more components of the coating react with energetic species of the plasma.
- German Utility Model DE 20 2006 0019 461 U1 discloses a device for removing at least one lacquer layer from one
- Plasma nozzle is housed in a hand-feeding and electrically insulated housing.
- Arc operated at a high pulse frequency and rastered over a surface of the layer, very easily contiguous surfaces of the substrate (carrier) can be exposed.
- the pulsed high voltage is designed such that each pulse has a capacitively stored pulse energy of 1 mJ to 100mJ.
- the stored pulse energy may have 10mJ.
- the electrically conductive element may be formed as a conductive and wedge-shaped counter electrode in the case of a poorly conductive substrate.
- the counterelectrode is pushed between the layer to be removed and the substrate in order to effect the electrical breakdown in the layer to be detached.
- the device according to the invention can be designed as a hand-held device, which together with the possible accessories such. As suction or additional nozzle, are performed on the ablated layer on the substrate can. According to another possible embodiment, several
- Devices for removing a layer from a substrate are connected to form an arrangement.
- the individual devices or plasma torches are mechanically interconnected, so that the arrangement can be performed as a unit on the layer to be removed. With the arrangement, it is thus possible that more extensive surface areas of the ablated layer can be processed.
- the inventive arrangement for example, for the removal of oxides on metals such. As rust used.
- High voltage source is connected to an electrode inside the plasma torch and to a housing of the plasma torch.
- Process gas is connected via a gas line to an inlet of the plasma torch.
- a jet of plasma emerges via a nozzle formed in the plasma torch and strikes a surface of the layer to be ablated.
- the z. B. may be a substrate for the ablated layer, a pulsed high voltage applied.
- the pulsed high voltage achieves a breakdown voltage in the region of the conductive element.
- the pulsed high voltage is a unipolar one Pulse train with a frequency of 10kHz to 1 MHz.
- the high voltage has a maximum amount of the potential related to the potential of the electrically conductive element of 1 kV to 100 kV.
- the pulsed high voltage has a
- thermomechanical pressure wave at the transition and the layer is thereby freed in a well-defined area.
- an exhaust may be provided between the plasma torch and the layer to be removed.
- Freed fragments or emissions of the layer are sucked off.
- An auxiliary nozzle may be used to spray a surface of the layer with a
- auxiliary fluid can be provided.
- the auxiliary fluid can abrasive support a removal of the layer.
- the auxiliary fluid may
- a surface of the layer can be scanned according to manually or automatically.
- the inventive method can according to one of the described
- a conductive auxiliary layer is applied at least to the layer to be removed.
- an area of 0.01 mm 2 to 1 mm 2 , but typically 0.1 mm 2 , of the layer is removed per high-voltage pulse.
- FIG. 5A shows an initial situation of a process sequence for removing a porous layer (rust or surface contamination) from a substrate;
- FIG. 5D shows a final situation of the process sequence during ablation
- FIG. 6 shows a further embodiment of the device according to the invention, wherein a conductive auxiliary layer is applied to the layer / substrate system in order to detach the layer by means of thermo-mechanical shock waves;
- FIG. 7 shows an additional embodiment of the device according to the invention, wherein a blade or a wedge-shaped counterelectrode is introduced and advanced to the point of removal;
- Figure 8A is a photograph of a distance of 500pm
- Figure 8B is an enlarged photograph of the area marked "B" in Figure 8A;
- Figure 9 is a photograph showing a carbon fiber reinforced
- Plastic shows, from which a 500pm thick lacquer layer was removed without damaging the fibers
- Figure 10 is a schematic representation of several plasma torches
- High voltage source 3 is connected.
- the high voltage source 3 generates a unipolar pulse train 12 of pulses 13, which is applied to an electrode 5 in the interior of a housing 9 of the plasma torch 2. Likewise, the
- High voltage source 3 connected to a housing 9 of the plasma torch 2.
- a supply for process gas 4 is connected via a gas line 10 to an inlet 6 of the plasma burner 2. This process gas 4 is passed into the interior of the plasma torch.
- the conductive substrate 20 (electrically conductive element 11) described in this embodiment is at ground potential.
- the basic structure of the device described in FIG. 1 is identical to that of FIGS. 2, 3, 4, 6 and 7 and will not be described repetitively for reasons of clarity of the description. Only the differences between the individual embodiments will be described.
- the plasma torch 2 has a nozzle 7 through which a plasma jet 8 emerges and is directed onto the substrate 20 or onto the surface 23 of the layer 22 to be removed, the substrate 20 carrying the layer 22 to be removed.
- the voltage applied to the electrode 5 high voltage is chosen such that by means of the exiting plasma jet 8 to an electrically conductive element 1 1 a pulsed high voltage is applied, which reaches a breakdown voltage in a region 29 of the conductive element 1 1. In the case described here
- High voltage source 3 generate a high voltage swing.
- High voltage source 3 can now be operated so that in the insulating or poorly conductive layer 22 on the conductive substrate 20 (conductive element 1 1) comes to an electrical breakdown, the pulse-like one Releases energy at the junction 24 from the insulating layer 22 to the conductive substrate 20. For short pulses, a thermo-mechanical pressure wave 27 is released at the transition 24. This causes layer 22 to become in one
- FIG. 2 shows another possible embodiment of the invention
- the structure of the device is essentially identical to the structure described in Figure 1 and need not be described in detail here. It is provided with a suction 15, with which the
- Fragments 25 or emissions of the layer 22 can be sucked out of the well-defined region 29.
- the fragments 25 or emissions of the layer 22 result from the fact that the electrical breakdown is generated at the transition 24 by the plasma jet 8 impinging on the layer 22, which releases energy in the manner of a pulse.
- FIG. 3 shows a further possible embodiment of the device 1 according to the invention, wherein in addition to the process gas 4, a solid 14 can also be brought through the inlet 6 into the interior of the plasma burner 2.
- the mixture of process gas 4 and solid 14 reaches the surface 23 of the layer 22 via the plasma jet 8.
- the enriched particles of the solid 14 can serve to support the removal of the layer 22.
- FIG. 4 shows a further possible embodiment of the device 1 according to the invention.
- the surface 23 of the layer 22 to be removed is one
- auxiliary fluid 18 serves to assist the removal, to remove dissolved Fragments of the layer 22 and for applying an auxiliary layer (not shown here).
- FIGS 5A to 5D show schematically the different stages in the
- FIG. 5A shows the situation that the layer 22 to be stripped is a porous corrosion and impurity structure which typically has dielectric properties.
- FIG. 5B shows the situation that the layer 22 to be stripped is a porous corrosion and impurity structure which typically has dielectric properties.
- FIG. 5C shows the situation that the plasma jet 8 strikes the layer 22, so that an electrical breakdown 30 occurs in the region of the transition 24. The electrical breakdown 30 releases energy at the transition 24 of the layer 22 to the conductive substrate 20 in a pulse-like manner.
- FIG. 5D shows the result of the application of the plasma jet 8 to the layer 22 of the conductive substrate 20. In a flat region F, the layer 22 is detached from the substrate 20 and the transition 24 is freely accessible.
- FIG. 6 shows a further embodiment of the device 1 according to the invention, wherein a conductive auxiliary layer 28 is applied to the layer / substrate system 21
- Thermomechanical shock waves 27 are thereby formed in the auxiliary layer 28, which can detach the layer 22 from the substrate 20.
- FIG. 7 shows a further embodiment of the device 1 according to the invention in which a wedge-shaped counterelectrode 16 is used as the electrically conductive element 11.
- Plasma torch 2 are connected to the high voltage source 3.
- the conductive wedge-shaped counter electrode 16 is slid between the layer 22 to be removed and the substrate 20.
- FIG. 9 shows a photograph of a carbon-fiber-reinforced plastic 40, from which a 500 pm thick lacquer layer has been removed without damaging the plastic 40 or its fibers.
- FIG. 10 shows a schematic representation of a plurality of plasma torches 2 which are connected together in order to be able to treat larger areas of a layer / substrate system 21.
- Each of the rigidly connected plasma torch 2 is connected to the high voltage source 3.
- the process gas 4 can be supplied via a gas line 10.
- the plasma jet 8 emerging from each plasma torch 2 strikes the layer / substrate system 21.
- the plurality of plasma torches 2 can be guided over the surface 23 by the layer 22 to be detached from the substrate 20.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
- Plasma Technology (AREA)
- Drying Of Semiconductors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017106724 | 2017-03-29 | ||
| PCT/IB2018/052068 WO2018178856A1 (de) | 2017-03-29 | 2018-03-27 | Vorrichtung und verfahren zum entfernen einer schicht von einem substrat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3600704A1 true EP3600704A1 (de) | 2020-02-05 |
Family
ID=62002696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18718515.2A Withdrawn EP3600704A1 (de) | 2017-03-29 | 2018-03-27 | Vorrichtung und verfahren zum entfernen einer schicht von einem substrat |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20200016634A1 (de) |
| EP (1) | EP3600704A1 (de) |
| CA (1) | CA3057260A1 (de) |
| MX (1) | MX2019011392A (de) |
| WO (1) | WO2018178856A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110860772B (zh) * | 2019-11-15 | 2025-07-08 | 深圳市佳士科技股份有限公司 | 一种除锈装置及方法 |
| CN115889344A (zh) * | 2022-12-19 | 2023-04-04 | 成都奋羽电子科技有限公司 | 一种微波等离子体去除涂层的装置及方法 |
| DE102023111775A1 (de) * | 2023-05-05 | 2024-11-07 | Elringklinger Ag | Verfahren, System und Verwendung zur Ermittlung der Beständigkeit eines Materials und/oder eines Prüfkörpers |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3641308A (en) * | 1970-06-29 | 1972-02-08 | Chemetron Corp | Plasma arc torch having liquid laminar flow jet for arc constriction |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5970993A (en) * | 1996-10-04 | 1999-10-26 | Utron Inc. | Pulsed plasma jet paint removal |
| DE19927557C2 (de) * | 1999-06-16 | 2003-08-21 | Plasmatreat Gmbh | Verfahren zum Vorbehandeln von zu schweißenden oder zu lötenden Werkstücken |
| US20040011378A1 (en) * | 2001-08-23 | 2004-01-22 | Jackson David P | Surface cleaning and modification processes, methods and apparatus using physicochemically modified dense fluid sprays |
| DE202006001946U1 (de) | 2006-02-06 | 2006-04-06 | Warema Renkhoff Gmbh | Sonnenschutzanlage mit Lamellenbehang |
| JP2012517671A (ja) | 2009-02-08 | 2012-08-02 | エーピー ソルーションズ, インコーポレイテッド | 圧力波を利用して基板から材料を除去するためのプラズマ源および方法 |
| KR102139391B1 (ko) * | 2012-05-18 | 2020-07-30 | 레이브 엔.피., 인크. | 오염 제거 장치 및 방법 |
-
2018
- 2018-03-27 EP EP18718515.2A patent/EP3600704A1/de not_active Withdrawn
- 2018-03-27 CA CA3057260A patent/CA3057260A1/en not_active Abandoned
- 2018-03-27 WO PCT/IB2018/052068 patent/WO2018178856A1/de not_active Ceased
- 2018-03-27 MX MX2019011392A patent/MX2019011392A/es unknown
-
2019
- 2019-09-25 US US16/582,078 patent/US20200016634A1/en not_active Abandoned
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3641308A (en) * | 1970-06-29 | 1972-02-08 | Chemetron Corp | Plasma arc torch having liquid laminar flow jet for arc constriction |
Also Published As
| Publication number | Publication date |
|---|---|
| CA3057260A1 (en) | 2018-10-04 |
| US20200016634A1 (en) | 2020-01-16 |
| WO2018178856A4 (de) | 2018-11-15 |
| WO2018178856A1 (de) | 2018-10-04 |
| MX2019011392A (es) | 2020-01-30 |
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