DE102007020413B4 - Sliding body for bearing or sealing arrangements - Google Patents
Sliding body for bearing or sealing arrangements Download PDFInfo
- Publication number
- DE102007020413B4 DE102007020413B4 DE200710020413 DE102007020413A DE102007020413B4 DE 102007020413 B4 DE102007020413 B4 DE 102007020413B4 DE 200710020413 DE200710020413 DE 200710020413 DE 102007020413 A DE102007020413 A DE 102007020413A DE 102007020413 B4 DE102007020413 B4 DE 102007020413B4
- Authority
- DE
- Germany
- Prior art keywords
- bearing
- sliding
- material surface
- silicon carbide
- material layer
- 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.)
- Expired - Fee Related
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
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- 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
Gleitkörper für Lager- oder Dichtungsanordnungen aus Siliciumcarbid (SiC) mit mindestens einer geglätteten Werkstoffoberfläche, dadurch gekennzeichnet, dass 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, die durch physikalische Gasphasenabscheidung (PVD) aufgebracht ist.Sliding body for bearing or sealing arrangements made of silicon carbide (SiC) with at least one smooth material surface, characterized in that the at least one material surface with a roughness in the range between 0.05 and 0.5 μm bears a deposited hard material layer of 1 to 5 μm which is applied by physical vapor deposition (PVD).
Description
Die Erfindung betrifft einen Gleitkörper für Lager- oder Dichtungsanordnungen aus Keramik nach dem Oberbegriff des Anspruchs 1.The invention relates to a sliding body for bearing or sealing arrangements made of ceramic according to the preamble of 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.As a sealing ring material is known silicon-infiltrated silicon carbide. By means of ablative methods, eg. B. by laser or by sandblasting, the wells are generated. The disadvantage here is that the bottom surfaces of the grooves often have damage and the strength of the component is deteriorated. Also, the performance of the material, especially with regard to the coefficient of friction, is insufficient for certain applications.
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Aufgabe der Erfindung ist es daher, einen Gleitkörper für Lager- oder Dichtungsanordnungen zu schaffen, der einfacher herstellbar ist und dabei leistungsfähiger ist.The object of the invention is therefore to provide a sliding body for bearing or sealing arrangements, which is easier to produce and is more powerful.
Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst.This 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. Die Hartstoffschicht wird 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.As a result, a sliding body for bearing or sealing arrangements is created, which allows a variable property profile of the functional surface by the coating with a hard material. The coefficient of friction of the hard material coating is lower than that of silicon carbide or silicon silicon carbide infiltrated. The hardness can be made even higher than that of the already very hard base material. Silicon carbide generally runs poorly against metal, so that the running properties are significantly improved by the coating according to the invention. The hard material layer is deposited by means of physical vapor deposition (physical vapor deposition, PVD for short) on a sufficiently smooth material surface. The recesses then have bottoms that are formed directly from the smoothed material surface. Damage to the same by removal processes is excluded.
Ein wesentlicher Vorteil der Beschichtung ist, daß im Falle einer strukturierten Funktionsfläche diese nicht abtragend, sondern aufbauend erzeugt wird.An essential advantage of the coating is that, in the case of a structured functional surface, it is not produced by ablation but by building up.
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 be formed in the range between 1 and 5 μm, depending on a selectable depth of the depressions, for example the depth for conveying grooves.
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 may consist of titanium aluminum nitride or titanium nitride. By means of a structure mask, a selectable arrangement of depressions is adjustable. The field of 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 described in the following description and 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 invention relates to a sliding body for bearing or sealing arrangements made of silicon carbide (SiC) with at least one smoothed material surface, wherein the at least one material surface with a surface roughness in the range between 0.05 and 0.5 microns carries a deposited hard material layer of 1 to 5 microns.
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 silicon carbide (SiSiC). The hard material layer preferably consists of titanium aluminum nitride (TiAlN) or titanium nitride (TiN) and is applied by physical vapor deposition (PVD).
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.Further preferred for sealing arrangements, the hard material layer is applied in the form of a structural mask to form a surface structuring. Such a structure mask preferably forms grooves of selectable arrangement and depth.
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 for example possible as a rotor sealing ring of a gas seal arrangement with the material surface as sealing face, as a rolling bearing of a rolling bearing with the material surface as a bearing end face, as a piston piston / cylinder unit with the material surface as the outer skin of the piston, as a bearing bush or shaft sleeve of a radial slide bearing with the material surface as Lagergleitfläche or as a bearing ring of an axial sliding bearing with the material surface as Lagergleitfläche.
Claims (10)
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 DE102007020413A1 (en) | 2008-11-06 |
DE102007020413B4 true DE102007020413B4 (en) | 2014-12-24 |
Family
ID=39809529
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE200710020413 Expired - Fee Related DE102007020413B4 (en) | 2007-04-27 | 2007-04-27 | Sliding body for bearing or sealing arrangements |
Country Status (1)
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DE (1) | DE102007020413B4 (en) |
Families Citing this family (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 |
Also Published As
Publication number | Publication date |
---|---|
DE102007020413A1 (en) | 2008-11-06 |
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Legal Events
Date | Code | Title | Description |
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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 |