EP1715080A1 - Gun barrel and a process for coating the inner surface - Google Patents

Gun barrel and a process for coating the inner surface Download PDF

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Publication number
EP1715080A1
EP1715080A1 EP06006655A EP06006655A EP1715080A1 EP 1715080 A1 EP1715080 A1 EP 1715080A1 EP 06006655 A EP06006655 A EP 06006655A EP 06006655 A EP06006655 A EP 06006655A EP 1715080 A1 EP1715080 A1 EP 1715080A1
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EP
European Patent Office
Prior art keywords
protective layer
barrel
coating
weapon
coating material
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
Application number
EP06006655A
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German (de)
French (fr)
Other versions
EP1715080B1 (en
Inventor
Jens Buchholz
Stefan Kaufmann
Gert Schlenkert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rheinmetall Waffe Munition GmbH
Original Assignee
Rheinmetall W&M GmbH
Rheinmetall Waffe Munition GmbH
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Application filed by Rheinmetall W&M GmbH, Rheinmetall Waffe Munition GmbH filed Critical Rheinmetall W&M GmbH
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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
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/02—Coating starting from inorganic powder by application of pressure only
    • C23C24/04—Impact or kinetic deposition of particles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
    • F41A21/22—Barrels which have undergone surface treatment, e.g. phosphating

Definitions

  • the invention relates to a weapon barrel, which is provided on its inner surface at least in a partial area with a protective layer.
  • the invention further relates to a method for coating the inner surface of the weapon barrel.
  • the invention has for its object to provide a weapon barrel, which is provided with a protective layer that is easy and inexpensive to apply, and does not dissolve even at high stress of the gun barrel from the base material of the gun barrel. Furthermore, a method for coating the inner surface of the gun barrel is to be disclosed with a protective layer.
  • the invention is based essentially on the idea of applying a protective layer to the inside of the weapon barrel by cold gas spraying.
  • all known refractory metals and their mixtures as well as ceramic materials can be used as a layer material.
  • the bonding of the coating material to the base material of the weapon barrel is effected by the high kinetic energy of the particles accelerated to supersonic velocity when hitting the base material. Similar to explosive plating, locally high pressures and strain rates occur. This creates, without thermal melting, a dense, firmly adhering protective layer of refractory material.
  • the invention has the great advantage that a firmly adhering erosion control layer can be produced in the weapon tubes without heat influence zones being formed or oxidation of the coating material occurring.
  • the respective coating material should have a sufficiently high ductility.
  • protective layers of tantalum have proven to be excellent, while protective layers of the relatively brittle molybdenum have appeared less suitable.
  • niobium, vandium or tungsten are available here.
  • the figure shows the longitudinal section of a part of a designated gun barrel of a tank gun.
  • the weapon barrel 1 is provided on its inner surface 2 in a portion 3 with a protective layer 4, for example of tantalum.
  • a recess 5 is made in the subregion 3 of the weapon barrel 1.
  • the protective layer 4 is then applied according to the invention by cold gas spraying.
  • a device 6 is inserted with a Laval nozzle 7 by means of a traversing device 15 in the interior 8 of the gun barrel 1.
  • the device 6 is connected via a first line 9 to a gas source 10.
  • the corresponding pressurized gas e.g., nitrogen
  • the coating material is supplied from a container 11 via a second line 12 of the device 6 as a powder and injected in front of the Laval nozzle 7 in the gas jet and accelerated by this to the inner surface 2 of the gun barrel 1 out.
  • Preferred particle velocity should be around 600 m / s.
  • gases in addition to nitrogen, bromine or helium at about 200 ° C can be used.
  • a planar coating of the inner surface 2 of the weapon barrel 1 in the portion 3 is achieved in that the device 6 and the weapon barrel 1 relative to each other perform a spiral movement.
  • the device 6 by means of the shuttle 15 both an axial and a rotational movement carry out.
  • the device 6 can also be displaced only axially by the traversing device 15 and the weapon barrel 1 can be rotated about its core axis 13 by a drive, not shown.
  • the layer thickness of the protective layer 4 to be applied initially to the inner surface 2 of the weapon barrel 1 must therefore be greater than the corresponding layer thickness of the protective layer 4 in the finished weapon barrel 1.
  • the layer thickness can be between 100 ⁇ m to 2 mm.
  • the size of the particles of the respective coating material can be about 25 microns.
  • the invention is not limited to the embodiment described above.
  • the application of the protective layer can extend both to partial areas and over the entire tube length.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

In a weapon barrel having a protective layer (4) on at least a partial region (3) of its internal surface (2), the protective layer is produced by cold spraying. An independent claim is included for a method for coating at least a partial region of the internal surface of a weapon barrel by applying the coating material to the surface by cold spraying, in which: a Laval nozzle located in the internal cavity of the barrel accelerates a gas to supersonic speed; powdered coating material is injected into the gas jet before the nozzle; the powder is accelerated together with the gas onto the surface to be coated; and the apparatus is moved relative to the barrel, so that a flat coating is obtained.

Description

Die Erfindung betrifft ein Waffenrohr, das auf seiner inneren Oberfläche mindestens in einem Teilbereich mit einer Schutzschicht versehen ist. Die Erfindung bezieht sich ferner auf ein Verfahren zur Beschichtung der inneren Oberfläche des Waffenrohres.The invention relates to a weapon barrel, which is provided on its inner surface at least in a partial area with a protective layer. The invention further relates to a method for coating the inner surface of the weapon barrel.

Um eine längere Lebensdauer der in der Regel aus Stahl bestehenden Waffenrohre zu erhalten, ist es bekannt, die innere Oberfläche des jeweiligen Waffenrohres mit einer Schutzschicht aus z.B. galvanisch abgeschiedenem Hartchrom zu versehen. Es hat sich allerdings gezeigt, daß insbesondere beim Verschießen leistungsgesteigerter Munition die relativ spröde Hartchromschicht sich partiell von dem Waffenrohr ablösen kann. Dadurch ist der Grundwerkstoff des Waffenrohres in diesen Bereichen bei Schußabgabe den heißen Verbrennungsgasen direkt ausgesetzt und es tritt dort ein starker Erosionsverschleiß des Grundwerkstoffes auf.In order to obtain a longer service life of the weapon tubes, which are usually made of steel, it is known to provide the inner surface of the respective weapon barrel with a protective layer of e.g. to provide galvanically deposited hard chrome. However, it has been shown that especially when firing performance-enhanced ammunition, the relatively brittle hard chrome layer can partially detach from the gun barrel. As a result, the base material of the gun barrel in these areas is directly exposed to the hot combustion gases at firing and there occurs a strong Erosionsverschleiß the base material.

Aus der DE 199 19 688 A1 und der DE 102 43 314 A1 ist es bekannt, hochschmelzende Schichtwerkstoffe auf die innere Oberfläche des Waffenrohres durch Auftragsschweißen aufzubringen. Als nachteilig hat sich bei diesen Waffenrohren erwiesen, daß bei dem Auftragsschweißen der Grundwerkstoff des Waffenrohres stark erwärmt und damit negativ beeinflußt wird.From the DE 199 19 688 A1 and the DE 102 43 314 A1 It is known to apply refractory coating materials on the inner surface of the gun barrel by build-up welding. A disadvantage has proved in these gun barrels that strongly heated in the build-up welding of the base material of the barrel and thus adversely affected.

Ferner ist aus der DE 199 26 246 A1 ein Waffenrohr bekannt, bei dem eine Schutzschicht durch Sprengplattieren auf die innere Oberfläche des Waffenrohres aufgebracht wird. Hierzu ist allerdings ein erheblicher verfahrensbedingter Aufwand erforderlich, um die beim Plattieren auftretenden Kräfte im Rohr aufzufangen. Außerdem treten häufig Bereiche mit einer schlechten Bindung zwischen Schutzschicht und Grundwerkstoff auf, so daß die Beschichtung in diesen Bereichen bei Schußabgabe abplatzen kann.Furthermore, from the DE 199 26 246 A1 a gun barrel is known in which a protective layer is applied by explosive cladding on the inner surface of the gun barrel. However, this requires a considerable process-related effort to the to absorb forces occurring during plating in the pipe. In addition, areas with a poor bond between protective layer and base material often occur, so that the coating can flake off in these areas at firing.

Der Erfindung liegt die Aufgabe zugrunde, ein Waffenrohr anzugeben, welches mit einer Schutzschicht versehen ist, die einfach und kostengünstig aufbringbar ist, und die sich auch bei hoher Beanspruchung des Waffenrohres nicht von dem Grundwerkstoff des Waffenrohres löst. Ferner soll ein Verfahren zur Beschichtung der inneren Oberfläche des Waffenrohres mit einer Schutzschicht offenbart werden.The invention has for its object to provide a weapon barrel, which is provided with a protective layer that is easy and inexpensive to apply, and does not dissolve even at high stress of the gun barrel from the base material of the gun barrel. Furthermore, a method for coating the inner surface of the gun barrel is to be disclosed with a protective layer.

Diese Aufgabe wird erfindungsgemäß hinsichtlich des Waffenrohres durch die Merkmale des Anspruchs 1 und hinsichtlich des Verfahrens durch die Merkmale des Anspruchs 4 gelöst. Weitere, besonders vorteilhafte Ausgestaltungen der Erfindung offenbaren die Unteransprüche.This object is achieved with respect to the weapon barrel by the features of claim 1 and in terms of the method by the features of claim 4. Further, particularly advantageous embodiments of the invention disclose the dependent claims.

Die Erfindung beruht im wesentlichen auf dem Gedanken, durch Kaltgasspritzen eine Schutzschicht auf die Innenseite des Waffenrohres aufzubringen. Hierzu können alle bekannten Refraktärmetalle und deren Mischungen sowie keramische Werkstoffe als Schichtwerkstoff eingesetzt werden. Die Anbindung des Schichtwerkstoffes an den Grundwerkstoff des Waffenrohres erfolgt durch die hohe kinetische Energie der auf Überschallgeschwindigkeit beschleunigten Teilchen beim Auftreffen auf das Grundmaterial. Ähnlich wie bei dem Sprengplattieren treten lokal hohe Drücke und Umformungsgeschwindigkeiten auf. Hierdurch entsteht, ohne thermisches Aufschmelzen, eine dichte, fest haftende Schutzschicht aus hochschmelzendem Material.The invention is based essentially on the idea of applying a protective layer to the inside of the weapon barrel by cold gas spraying. For this purpose, all known refractory metals and their mixtures as well as ceramic materials can be used as a layer material. The bonding of the coating material to the base material of the weapon barrel is effected by the high kinetic energy of the particles accelerated to supersonic velocity when hitting the base material. Similar to explosive plating, locally high pressures and strain rates occur. This creates, without thermal melting, a dense, firmly adhering protective layer of refractory material.

Die Erfindung weist also den großen Vorteil auf, daß eine fest haftende Erosionsschutzschicht in den Waffenrohren erzeugt werden kann, ohne daß Wärmeeinflußzonen gebildet werden oder eine Oxidation des Beschichtungswerkstoffes auftritt.Thus, the invention has the great advantage that a firmly adhering erosion control layer can be produced in the weapon tubes without heat influence zones being formed or oxidation of the coating material occurring.

Außerdem besteht die Möglichkeit, durch Mischen unterschiedlicher Metallpulver Schutzschichten aus sogenannten Pseudolegierungen herzustellen. Hierbei handelt es sich um Metallmischungen, welche auf schmelzmetallurgischem Weg nicht herstellbar sind, weil die entsprechenden Metalle im schmelzflüssigen Zustand nicht mischbar sind, oder es zu unerwünschten Reaktionen wie Phasenausscheidung oder Versprödung kommt.It is also possible to produce by mixing different metal powder protective layers of so-called pseudoalloys. These are metal mixtures which can not be produced by melt metallurgy, because the corresponding metals in the molten state are immiscible, or there are undesirable reactions such as phase separation or embrittlement.

Ferner haben Versuche gezeigt, daß der jeweilige Beschichtungswerkstoff eine ausreichend hohe Duktilität besitzen sollte. So haben sich Schutzschichten aus Tantal als hervorragend erwiesen, während Schutzschichten aus dem relativ spröden Molybdän weniger geeignet erschienen. Auch Niob, Vandium oder Wolfram bieten sich hier an.Furthermore, tests have shown that the respective coating material should have a sufficiently high ductility. For example, protective layers of tantalum have proven to be excellent, while protective layers of the relatively brittle molybdenum have appeared less suitable. Also niobium, vandium or tungsten are available here.

Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus dem folgenden Ausführungsbeispiel, welches anhand einer Figur erläutert wird.Further details and advantages of the invention will become apparent from the following embodiment, which is explained with reference to a figure.

Die Figur zeigt den Längsschnitt eines Teiles eines mit 1 bezeichneten Waffenrohres einer Panzerkanone. Das Waffenrohr 1 ist auf seiner inneren Oberfläche 2 in einem Teilbereich 3 mit einer Schutzschicht 4, beispielsweise aus Tantal, versehen.The figure shows the longitudinal section of a part of a designated gun barrel of a tank gun. The weapon barrel 1 is provided on its inner surface 2 in a portion 3 with a protective layer 4, for example of tantalum.

Vor Durchführung der Beschichtung wird in den Teilbereich 3 des Waffenrohres 1 eine Ausnehmung 5 eingebracht. In diese Ausnehmung 5 wird anschließend die Schutzschicht 4 erfindungsgemäß durch Kaltgasspritzen aufgebracht. Hierzu wird eine Vorrichtung 6 mit einer Laval-Düse 7 mittels einer Verfahreinrichtung 15 in den Innenraum 8 des Waffenrohres 1 eingeschoben. Die Vorrichtung 6 ist dabei über eine erste Leitung 9 mit einer Gasquelle 10 verbunden. Das entsprechende unter Druck austretende Gas (z.B. Stickstoff) wird in der Laval-Düse 7 auf Überschallgeschwindigkeit beschleunigt. Der Beschichtungswerkstoff wird aus einem Behälter 11 über eine zweite Leitung 12 der Vorrichtung 6 als Pulver zugeführt und vor der Laval-Düse 7 in den Gasstrahl injiziert und durch diesen zur inneren Oberfläche 2 des Waffenrohres 1 hin beschleunigt. Bevorzugte Partikelgeschwindigkeit sollte rund 600 m/s betragen. Als Gase können neben Stickstoff auch Brom oder Helium bei ca. 200 °C verwendet werden.Before the coating is carried out, a recess 5 is made in the subregion 3 of the weapon barrel 1. In this recess 5, the protective layer 4 is then applied according to the invention by cold gas spraying. For this purpose, a device 6 is inserted with a Laval nozzle 7 by means of a traversing device 15 in the interior 8 of the gun barrel 1. The device 6 is connected via a first line 9 to a gas source 10. The corresponding pressurized gas (e.g., nitrogen) is accelerated to supersonic velocity in the Laval nozzle 7. The coating material is supplied from a container 11 via a second line 12 of the device 6 as a powder and injected in front of the Laval nozzle 7 in the gas jet and accelerated by this to the inner surface 2 of the gun barrel 1 out. Preferred particle velocity should be around 600 m / s. As gases, in addition to nitrogen, bromine or helium at about 200 ° C can be used.

Eine flächige Beschichtung der inneren Oberfläche 2 des Waffenrohres 1 in dem Teilbereich 3 wird dadurch erreicht, daß die Vorrichtung 6 und das Waffenrohr 1 relativ zueinander eine spiralförmige Bewegung ausführen. Hierzu kann beispielsweise die Vorrichtung 6 mit Hilfe der Verfahreinrichtung 15 sowohl eine axiale als auch eine rotatorische Bewegung durchführen. Ferner kann die Vorrichtung 6 durch die Verfahreinrichtung 15 auch nur axial verschoben und das Waffenrohr 1 durch einen nicht dargestellten Antrieb um seine Seelenachse 13 gedreht werden.A planar coating of the inner surface 2 of the weapon barrel 1 in the portion 3 is achieved in that the device 6 and the weapon barrel 1 relative to each other perform a spiral movement. For this purpose, for example, the device 6 by means of the shuttle 15 both an axial and a rotational movement carry out. Furthermore, the device 6 can also be displaced only axially by the traversing device 15 and the weapon barrel 1 can be rotated about its core axis 13 by a drive, not shown.

Nach dem Aufbringen der Schutzschicht 4 erfolgt eine mechanische Nachbearbeitung der Oberfläche 14 der Schutzschicht 4, da die Schutzschicht 4 eine relativ rauhe Oberfläche aufweist. Die zunächst auf die innere Oberfläche 2 des Waffenrohres 1 aufzutragende Schichtdicke der Schutzschicht 4 muß daher größer sein, als die entsprechende Schichtdicke der Schutzschicht 4 bei dem fertigen Waffenrohr 1. Die Schichtdicke kann zwischen 100 µm bis 2 mm liegen. Die Größe der Partikel des jeweiligen Beschichtwerkstoffes kann ca. 25 µm betragen.After the application of the protective layer 4, a mechanical finishing of the surface 14 of the protective layer 4 takes place, since the protective layer 4 has a relatively rough surface. The layer thickness of the protective layer 4 to be applied initially to the inner surface 2 of the weapon barrel 1 must therefore be greater than the corresponding layer thickness of the protective layer 4 in the finished weapon barrel 1. The layer thickness can be between 100 μm to 2 mm. The size of the particles of the respective coating material can be about 25 microns.

Die Erfindung ist selbstverständlich nicht auf das vorstehend beschriebene Ausführungsbeispiel beschränkt. So kann sich das Aufbringen der Schutzschicht sowohl auf Teilbereiche als auch über die gesamte Rohrlänge erstrecken.Of course, the invention is not limited to the embodiment described above. Thus, the application of the protective layer can extend both to partial areas and over the entire tube length.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Waffenrohrbarrel
22
innere Oberflächeinner surface
33
Teilbereichsubregion
44
Schutzschichtprotective layer
55
Ausnehmungrecess
66
Vorrichtungcontraption
77
Laval-DüseLaval nozzle
88th
Innenrauminner space
99
erste Leitungfirst line
1010
Gasquellegas source
1111
Behältercontainer
1212
zweite Leitungsecond line
1313
Seelenachsebore axis
1414
Oberflächesurface
1515
Verfahreinrichtungtraversing

Claims (4)

Waffenrohr, das auf seiner inneren Oberfläche (2) mindestens in einem Teilbereich (3) mit einer Schutzschicht (4) versehen ist, dadurch gekennzeichnet, daß es sich bei der Schutzschicht (4) um eine durch Kaltgasspritzen hergestellte Beschichtung handelt.Weapon tube which is provided on its inner surface (2) with a protective layer (4) at least in a partial area (3), characterized in that the protective layer (4) is a coating produced by cold gas spraying. Waffenrohr nach Anspruch 1, dadurch gekennzeichnet, daß die Schutzschicht (4) aus einem Refraktärmetall, einer Mischung aus unterschiedlichen Refraktärmetallen oder einem keramischen Werkstoff besteht.A weapon barrel according to claim 1, characterized in that the protective layer (4) consists of a refractory metal, a mixture of different refractory metals or a ceramic material. Waffenrohr nach Anspruch 2, dadurch gekennzeichnet, daß das Waffenrohr (1) mindestens auf seiner der Schutzschicht (4) zugewandten Seite aus Stahl und die Schutzschicht (4) aus Tantal besteht.A weapon barrel according to claim 2, characterized in that the weapon barrel (1) consists of steel at least on its side facing the protective layer (4) and the protective layer (4) consists of tantalum. Verfahren zur Beschichtung mindestens eines Teilbereiches der inneren Oberfläche eines Waffenrohres, insbesondere mit einem Beschichtungswerkstoff zur Vermeidung von Erosionen, mit den Merkmalen: a) der Beschichtungswerkstoff wird durch Kaltgasspritzen auf die innere Oberfläche des Waffenrohres aufgebracht; b) hierzu wird in dem Innenraum des Waffenrohres eine Vorrichtung mit einer Laval-Düse angeordnet, welche ein Gas auf Überschallgeschwindigkeit beschleunigt, wobei der Beschichtungswerkstoff als Pulver vor der Düse in den Gasstrahl injiziert und mit diesem auf die innere Oberfläche des Waffenrohres hin beschleunigt wird; c) die Vorrichtung wird relativ zum Waffenrohr bewegt, so daß sich eine flächige Beschichtung der inneren Oberfläche mit dem Beschichtungswerkstoff ergibt. Process for coating at least a portion of the inner surface of a weapon barrel, in particular with a coating material to prevent erosion, having the features: a) the coating material is applied by cold gas spraying on the inner surface of the gun barrel; b) for this purpose, a device with a Laval nozzle is arranged in the interior of the gun barrel, which accelerates a gas to supersonic speed, wherein the coating material is injected as a powder in front of the nozzle in the gas jet and accelerated with this on the inner surface of the gun barrel out; c) the device is moved relative to the weapon barrel, so that there is a surface coating of the inner surface with the coating material.
EP06006655A 2005-04-21 2006-03-30 Process for coating the inner surface of a gun barrel Revoked EP1715080B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005018618A DE102005018618A1 (en) 2005-04-21 2005-04-21 Gun barrel and method of coating the inner surface of the barrel

Publications (2)

Publication Number Publication Date
EP1715080A1 true EP1715080A1 (en) 2006-10-25
EP1715080B1 EP1715080B1 (en) 2008-09-03

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EP (1) EP1715080B1 (en)
AT (1) ATE407233T1 (en)
DE (2) DE102005018618A1 (en)
ES (1) ES2310869T3 (en)

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US8470396B2 (en) 2008-09-09 2013-06-25 H.C. Starck Inc. Dynamic dehydriding of refractory metal powders
US8703233B2 (en) 2011-09-29 2014-04-22 H.C. Starck Inc. Methods of manufacturing large-area sputtering targets by cold spray
AT14202U1 (en) * 2013-09-06 2015-05-15 Plansee Se Process for surface treatment by means of cold gas spraying
US9783882B2 (en) 2007-05-04 2017-10-10 H.C. Starck Inc. Fine grained, non banded, refractory metal sputtering targets with a uniformly random crystallographic orientation, method for making such film, and thin film based devices and products made therefrom

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CA2606478C (en) 2005-05-05 2013-10-08 H.C. Starck Gmbh Method for coating a substrate surface and coated product
US20080078268A1 (en) 2006-10-03 2008-04-03 H.C. Starck Inc. Process for preparing metal powders having low oxygen content, powders so-produced and uses thereof
US20080145688A1 (en) 2006-12-13 2008-06-19 H.C. Starck Inc. Method of joining tantalum clade steel structures
DE102007051374A1 (en) * 2007-10-26 2009-04-30 Trw Automotive Gmbh Gas shuttle valve for internal-combustion engine, is formed from lightweight construction material and is provided with coating in sections, where coating is applied by cold gas spraying
DE102014014868B4 (en) * 2014-10-06 2017-12-14 Bernulf Cornelius Tebbe Fingerprint technique for firearms

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DE19919687A1 (en) * 1999-04-30 2000-11-02 Rheinmetall W & M Gmbh Process for coating the inside of a gun barrel
DE19919688A1 (en) * 1999-04-30 2000-11-02 Rheinmetall W & M Gmbh Process for coating the inside of a gun barrel
DE19926246A1 (en) * 1999-06-09 2000-12-14 Rheinmetall W & M Gmbh Process for coating the inside of a gun barrel
US6183820B1 (en) * 1997-08-20 2001-02-06 Rheinmetall Industrie Ag Method of internally coating a metal tube by explosive evaporation of the coating substance
US20040052964A1 (en) * 2002-09-18 2004-03-18 Rheinmetall W & M Gmbh Method for coating the inside of a gun barrel
US20040140292A1 (en) * 2002-10-21 2004-07-22 Kelley John E. Micro-welded gun barrel coatings

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US2792657A (en) * 1946-05-16 1957-05-21 Battelle Development Corp Gun barrel coated with tantalum
US3654895A (en) * 1969-08-15 1972-04-11 Texas Instruments Inc Apparatus for forming a refractory coating on the inner periphery of a tubular object
US4138512A (en) * 1977-10-17 1979-02-06 The United States Of America As Represented By The Secretary Of The Army Process for chemical vapor deposition of a homogeneous alloy of refractory metals
GB2090291A (en) * 1980-12-22 1982-07-07 Secr Defence Sputter ion plating of refractory metal/metal compounds
EP0339692A2 (en) * 1984-05-02 1989-11-02 General Electric Company Method of forming a wear resistant gun barrel
US4669212A (en) * 1984-10-29 1987-06-02 General Electric Company Gun barrel for use at high temperature
US6183820B1 (en) * 1997-08-20 2001-02-06 Rheinmetall Industrie Ag Method of internally coating a metal tube by explosive evaporation of the coating substance
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DE19919687A1 (en) * 1999-04-30 2000-11-02 Rheinmetall W & M Gmbh Process for coating the inside of a gun barrel
US20010051226A1 (en) * 1999-04-30 2001-12-13 Christian Warnecke Method of internally coating a weapon barrel by a plasma flame
US20020114899A1 (en) * 1999-04-30 2002-08-22 Christian Warnecke Method of internally coating a weapon barrel by means of a laser beam
DE19926246A1 (en) * 1999-06-09 2000-12-14 Rheinmetall W & M Gmbh Process for coating the inside of a gun barrel
US20040052964A1 (en) * 2002-09-18 2004-03-18 Rheinmetall W & M Gmbh Method for coating the inside of a gun barrel
US20040140292A1 (en) * 2002-10-21 2004-07-22 Kelley John E. Micro-welded gun barrel coatings

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US9783882B2 (en) 2007-05-04 2017-10-10 H.C. Starck Inc. Fine grained, non banded, refractory metal sputtering targets with a uniformly random crystallographic orientation, method for making such film, and thin film based devices and products made therefrom
US8470396B2 (en) 2008-09-09 2013-06-25 H.C. Starck Inc. Dynamic dehydriding of refractory metal powders
US8961867B2 (en) 2008-09-09 2015-02-24 H.C. Starck Inc. Dynamic dehydriding of refractory metal powders
US8703233B2 (en) 2011-09-29 2014-04-22 H.C. Starck Inc. Methods of manufacturing large-area sputtering targets by cold spray
US8734896B2 (en) 2011-09-29 2014-05-27 H.C. Starck Inc. Methods of manufacturing high-strength large-area sputtering targets
US9108273B2 (en) 2011-09-29 2015-08-18 H.C. Starck Inc. Methods of manufacturing large-area sputtering targets using interlocking joints
US9120183B2 (en) 2011-09-29 2015-09-01 H.C. Starck Inc. Methods of manufacturing large-area sputtering targets
US9293306B2 (en) 2011-09-29 2016-03-22 H.C. Starck, Inc. Methods of manufacturing large-area sputtering targets using interlocking joints
US9412568B2 (en) 2011-09-29 2016-08-09 H.C. Starck, Inc. Large-area sputtering targets
AT14202U1 (en) * 2013-09-06 2015-05-15 Plansee Se Process for surface treatment by means of cold gas spraying

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EP1715080B1 (en) 2008-09-03
ES2310869T3 (en) 2009-01-16
ATE407233T1 (en) 2008-09-15
DE502006001471D1 (en) 2008-10-16

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