DE102007020413A1 - Sliding body for bearing or sealing silicon carbide arrangement for use in e.g. rotor gasket of gas seal arrangement, has hard material layer applied in form of mask for forming structure, where mask forms slots of arrangement - Google Patents
Sliding body for bearing or sealing silicon carbide arrangement for use in e.g. rotor gasket of gas seal arrangement, has hard material layer applied in form of mask for forming structure, where mask forms slots of arrangement Download PDFInfo
- Publication number
- DE102007020413A1 DE102007020413A1 DE102007020413A DE102007020413A DE102007020413A1 DE 102007020413 A1 DE102007020413 A1 DE 102007020413A1 DE 102007020413 A DE102007020413 A DE 102007020413A DE 102007020413 A DE102007020413 A DE 102007020413A DE 102007020413 A1 DE102007020413 A1 DE 102007020413A1
- Authority
- DE
- Germany
- Prior art keywords
- bearing
- arrangement
- material layer
- silicon carbide
- mask
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3496—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member use of special materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
- C04B35/573—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide obtained by reaction sintering or recrystallisation
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5053—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials non-oxide ceramics
- C04B41/5062—Borides, Nitrides or Silicides
- C04B41/5068—Titanium nitride
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/043—Sliding surface consisting mainly of ceramics, cermets or hard carbon, e.g. diamond like carbon [DLC]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/62—Selection of substances
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/02—Bearing surfaces
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/963—Surface properties, e.g. surface roughness
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Sliding-Contact Bearings (AREA)
- Mechanical Sealing (AREA)
- Physical Vapour Deposition (AREA)
Abstract
Die Erfindung betrifft einen Gleitkörper für Lager- oder Dichtungsanordnungen aus Siliciumcarbid (SiC) mit mindestens einer geglätteten Werkstoffoberfläche, wobei die mindestens eine Werkstoffoberfläche mit einer Rauhtiefe im Bereich zwischen 0,05 und 0,5 µm eine abgeschiedene Hartstoffschicht von 1 bis 5 µm trägt.The The invention relates to a sliding body for bearing or seal assemblies of silicon carbide (SiC) with at least a smoothed material surface, wherein the at least one material surface with a roughness depth in the range between 0.05 and 0.5 microns a deposited Hard material layer of 1 to 5 microns carries.
Description
Die Erfindung betrifft einen Gleitkörper für Lager- oder Dichtungsanordnungen aus Keramik nach dem Oberbegriff des Anspruchs 1.The The invention relates to a sliding body for bearing or sealing arrangements made of ceramic according to the preamble of the claim 1.
Seit
mehr als zwanzig Jahren werden zur Abdichtung von Wellen, beispielsweise
in Turbokompressoren, berührungslose Gasdichtungen eingesetzt. Die
Besonderheit dieser Gleitringdichtungen besteht in der Oberflächenstrukturierung
der Gleitfläche des bewegten Ringes. Die Oberflächenstrukturierung
besteht aus Vertiefungen, vorzugsweise Spiralnuten. Dies führt
dazu, daß sich bei Rotation im Dichtspalt ein Gasdruck
aufbaut, der die Gleitpartner soweit trennt, daß sich die
Reibung auf reine Gasreibung verringert, ohne daß eine
zu große Leckage auftritt. Eine solche gasgesperrte, kontaktlose
Dichtungsanordnung für eine Welle ist beispielsweise in
Als Dichtungsringwerkstoff bekannt ist siliciuminfiltriertes Siliciumcarbid. Mittels abtragender Verfahren, z. B. durch Laser oder durch Sandstrahlen, werden die Vertiefungen erzeugt. Nachteilig hierbei ist, daß die Bodenflächen der Nuten vielfach Schädigungen aufweisen und die Festigkeit des Bauteils verschlechtert ist. Auch ist die Leistungsfähigkeit des Werkstoffs, insbesondere hinsichtlich des Reibkoeffizienten, für bestimmte Anwendungen nicht ausreichend.When Sealing ring material is known silicon-infiltrated silicon carbide. By means of ablative methods, eg. B. by laser or by sandblasting, the pits are created. The disadvantage here is that the Floor surfaces of the grooves often have damage and the strength of the component is deteriorated. Also is the Performance of the material, especially in terms the coefficient of friction, not for certain applications sufficient.
Aufgabe der Erfindung ist es daher, einen Gleitkörper für Lager- oder Dichtungsanordnungen zu schaffen, der einfacher herstellbar ist und dabei leistungsfähiger ist.task The invention is therefore a sliding body for To provide storage or sealing arrangements, the easier to produce is and is more powerful.
Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst.These The object is solved by the features of claim 1.
Hierdurch wird ein Gleitkörper für Lager- oder Dichtungsanordnungen geschaffen, der durch die Beschichtung mit einem Hartstoff ein veränderbares Eigenschaftsprofil der Funktionsfläche erlaubt. Der Reibkoeffizient der Hartstoffbeschichtung ist niedriger einstellbar als der von Siliciumcarbid oder siliciuminfiltriertem Siliciumcarbid. Die Härte kann sogar noch höher ausgebildet werden als die des bereits schon sehr harten Grundmaterials. Siliciumcarbid läuft im allgemeinen schlecht gegen Metall, so daß durch die erfindungsgemäße Beschichtung die Laufeigenschaften wesentlich verbessert werden.hereby becomes a sliding body for bearing or sealing arrangements created by the coating with a hard material a changeable Property profile of the functional area allowed. The friction coefficient the hard coating is lower than that of Silicon carbide or silicon-infiltrated silicon carbide. The hardness can be even higher than that of the already already very hard base material. Silicon carbide is running generally bad against metal, so that by the coating according to the invention the running properties be significantly improved.
Ein wesentlicher Vorteil der Beschichtung ist, daß im Falle einer strukturierten Funktionsfläche diese nicht abtragend, sondern aufbauend erzeugt wird. Vorzugsweise wird die Hartstoffschicht mittels physikalischer Gasphasenabscheidung (physical vapour deposition, kurz PVD) auf einer hinreichend glatten Werkstoffoberfläche abgeschieden. Die Vertiefungen besitzen dann Böden, die von der geglätteten Werkstoffoberfläche direkt gebildet werden. Eine Schädigung derselben durch Abtragverfahren ist ausgeschlossen.One The main advantage of the coating is that in case a structured functional surface not eroding these, but is generated constructively. Preferably, the hard material layer by means of physical vapor deposition (physical vapor deposition, short PVD) on a sufficiently smooth material surface deposited. The wells then have floors that from the smoothed material surface directly be formed. Damage to the same by removal processes is excluded.
Die Dicke der Hartstoffschicht kann abhängig von einer wählbaren Tiefe der Vertiefungen, beispielsweise der Tiefe für Fördernuten, im Bereich zwischen 1 und 5 µm ausgebildet sein.The Thickness of the hard material layer can depend on a selectable Depth of the recesses, for example the depth for conveyor grooves, be formed in the range between 1 and 5 microns.
Die Hartstoffschicht kann aus Titanaluminiumnitrid oder Titannitrid bestehen. Mittels einer Strukturmaske ist eine wählbare Anordnung von Vertiefungen einstellbar. Das Anwendungsgebiet des Gleitkörpers ist vielfältig.The Hard material layer can be made of titanium aluminum nitride or titanium nitride consist. By means of a structure mask is a selectable Arrangement of wells adjustable. The application of the slider is diverse.
Weitere Ausgestaltungen der Erfindung sind der nachfolgenden Beschreibung und den Unteransprüchen zu entnehmen.Further Embodiments of the invention are the following description and to refer to the dependent claims.
Die Erfindung betrifft einen Gleitkörper für Lager- oder Dichtungsanordnungen aus Siliciumcarbid (SiC) mit mindestens einer geglätteten Werkstoffoberfläche, wobei die mindestens eine Werkstoffoberfläche mit einer Rauhtiefe im Bereich zwischen 0,05 und 0,5 µm eine abgeschiedene Hartstoffschicht von 1 bis 5 µm trägt.The The invention relates to a sliding body for bearing or seal assemblies of silicon carbide (SiC) with at least a smoothed material surface, wherein the at least one material surface with a roughness depth in the range between 0.05 and 0.5 microns a deposited Hard material layer of 1 to 5 microns carries.
Das Siliciumcarbid (SiC) ist vorzugsweise auch ein siliciuminfiltriertes Siliciumcarbid (SiSiC). Die Hartstoffschicht besteht vorzugsweise aus Titanaluminiumnitrid (TiAlN) oder Titannitrid (TiN) und ist durch physikalische Gasphasenabscheidung (PVD) aufgebracht.The Silicon carbide (SiC) is preferably also a silicon-infiltrated one Silicon carbide (SiSiC). The hard material layer is preferably made of titanium aluminum nitride (TiAlN) or titanium nitride (TiN) and is characterized by physical vapor deposition (PVD) applied.
Weiterhin bevorzugt ist für Dichtungsanordnungen die Hartstoffschicht in Form einer Strukturmaske zur Bildung einer Oberflächenstrukturierung aufgebracht. Eine solche Strukturmaske bildet vorzugsweise Nuten wählbarer Anordnung und Tiefe aus.Farther preferred for sealing arrangements, the hard material layer applied in the form of a structural mask to form a surface structuring. Such a structure mask preferably forms grooves selectable Arrangement and depth off.
Die Verwendung des Gleitkörpers ist beispielsweise möglich als Rotor-Dichtungsring einer Gasdichtungsanordnung mit der Werkstoffoberfläche als Dichtungsstirnfläche, als Wälzlagerring eines Wälzlagers mit der Werkstoffoberfläche als Lagerstirnfläche, als Kolben einer Kolben/Zylinder-Einheit mit der Werkstoffoberfläche als Außenhaut des Kolbens, als Lagerbüchse oder Wellenhülse eines radialen Gleitlagers mit der Werkstoffoberfläche als Lagergleitfläche oder als Lagerring eines axialen Gleitlagers mit der Werkstoffoberfläche als Lagergleitfläche.The Use of the slider is possible, for example as a rotor sealing ring of a gas seal arrangement with the material surface as Seal face, as a rolling bearing ring of a rolling bearing with the material surface as a bearing end face, as a piston of a piston / cylinder unit with the material surface as the outer skin of the piston, as a bearing bush or Shaft sleeve of a radial plain bearing with the material surface as a bearing sliding surface or as a bearing ring of an axial plain bearing with the material surface as a bearing sliding surface.
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 3734704 C2 [0002] - DE 3734704 C2 [0002]
Claims (11)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200710020413 DE102007020413B4 (en) | 2007-04-27 | 2007-04-27 | Sliding body for bearing or sealing arrangements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200710020413 DE102007020413B4 (en) | 2007-04-27 | 2007-04-27 | Sliding body for bearing or sealing arrangements |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE102007020413A1 true DE102007020413A1 (en) | 2008-11-06 |
| DE102007020413B4 DE102007020413B4 (en) | 2014-12-24 |
Family
ID=39809529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE200710020413 Expired - Fee Related DE102007020413B4 (en) | 2007-04-27 | 2007-04-27 | Sliding body for bearing or sealing arrangements |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE102007020413B4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022131103A1 (en) * | 2022-11-24 | 2024-05-29 | Eagleburgmann Germany Gmbh & Co. Kg | Mechanical seal ring and method for its manufacture |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE954301C (en) * | 1953-11-26 | 1956-12-13 | Metallgesellschaft Ag | Precision machine bearings with hardened surface |
| DE3734704C2 (en) | 1986-10-28 | 1990-02-01 | Pacific Wietz Gmbh + Co Kg, 4600 Dortmund, De | |
| DE19630149A1 (en) * | 1995-07-25 | 1997-01-30 | Riken Kk | Sliding component and method for its production |
| EP1013779A2 (en) * | 1998-12-24 | 2000-06-28 | Mazda Motor Corporation | Method of treating and smoothing sliding surface |
-
2007
- 2007-04-27 DE DE200710020413 patent/DE102007020413B4/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE954301C (en) * | 1953-11-26 | 1956-12-13 | Metallgesellschaft Ag | Precision machine bearings with hardened surface |
| DE3734704C2 (en) | 1986-10-28 | 1990-02-01 | Pacific Wietz Gmbh + Co Kg, 4600 Dortmund, De | |
| DE19630149A1 (en) * | 1995-07-25 | 1997-01-30 | Riken Kk | Sliding component and method for its production |
| EP1013779A2 (en) * | 1998-12-24 | 2000-06-28 | Mazda Motor Corporation | Method of treating and smoothing sliding surface |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022131103A1 (en) * | 2022-11-24 | 2024-05-29 | Eagleburgmann Germany Gmbh & Co. Kg | Mechanical seal ring and method for its manufacture |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102007020413B4 (en) | 2014-12-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| R018 | Grant decision by examination section/examining division | ||
| R020 | Patent grant now final | ||
| R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |