US3747944A - Dry lubricated materials, members and systems with boron nitride and graphite - Google Patents
Dry lubricated materials, members and systems with boron nitride and graphite Download PDFInfo
- Publication number
- US3747944A US3747944A US00212414A US3747944DA US3747944A US 3747944 A US3747944 A US 3747944A US 00212414 A US00212414 A US 00212414A US 3747944D A US3747944D A US 3747944DA US 3747944 A US3747944 A US 3747944A
- Authority
- US
- United States
- Prior art keywords
- working surface
- component selected
- group
- graphite
- boron nitride
- 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 - Lifetime
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M7/00—Solid or semi-solid compositions essentially based on lubricating components other than mineral lubricating oils or fatty oils and their use as lubricants; Use as lubricants of single solid or semi-solid 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
- 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
- F16C33/06—Sliding surface mainly made of metal
- F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
-
- 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
- F16N—LUBRICATING
- F16N15/00—Lubrication with substances other than oil or grease; Lubrication characterised by the use of particular lubricants in particular apparatus or conditions
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/04—Elements
- C10M2201/041—Carbon; Graphite; Carbon black
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/04—Elements
- C10M2201/041—Carbon; Graphite; Carbon black
- C10M2201/042—Carbon; Graphite; Carbon black halogenated, i.e. graphite fluoride
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/04—Elements
- C10M2201/05—Metals; Alloys
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/061—Carbides; Hydrides; Nitrides
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/08—Inorganic acids or salts thereof
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/08—Inorganic acids or salts thereof
- C10M2201/081—Inorganic acids or salts thereof containing halogen
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/08—Inorganic acids or salts thereof
- C10M2201/082—Inorganic acids or salts thereof containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/08—Inorganic acids or salts thereof
- C10M2201/084—Inorganic acids or salts thereof containing sulfur, selenium or tellurium
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/085—Phosphorus oxides, acids or salts
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/16—Carbon dioxide
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/18—Ammonia
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/08—Solids
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/10—Semi-solids; greasy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S277/00—Seal for a joint or juncture
- Y10S277/903—Seal for rotating kiln or drum
Definitions
- An improved gas turbine regenerator seal system having a new configuration wherein one of the rubbing seal members thereof carries a new material providing an initial working surface comprised of an iron oxide matrix containing an interspersed mixture of boron nim ew a.I-// .1 07 516- 3 I m F w 2 ⁇ l 6 m "l 9 u “9 w u :u 7 n "mml mnus "m g &3 n. ""0 nme wa L C .m .m.w UIF 111 218 555 rlZiZl.
- This invention relates in general to a material for dry lubricated rubbing members, such as might be used in Wankel engines, and more particularly to turbine engine regenerator members which use such materials and even more particularly to a new configuration of seal system which uses such a material.
- Dry lubrication refers to systems wherein a member rubs against a mat- I ing member as in turbine regenerators wherein a regenerator core rotates in rubbing contact between a set of seals and cross-arms at high temperatures and in the absence of fluid lubricants.
- This invention in its broadest sense provides a new material exhibiting desirable friction and wear characteristics for use under conditions of the type encountered under elevated temperature dry lubrication conditions.
- the material forms a working surface for one of a pair of mating members adapted for rubbing relationship, and is particularly adapted for use at temperatures such as those which occur in certain sections of gas turbine engine regenerators, that is, temperatures in the area of about l,000 F.
- a working surface initially generally comprises a matrix layer of iron oxide, preferably Fe 0,, carried by a substrate.
- the iron oxide layer contains an interspersed mixture of nickel coated graphite, boron nitride (BN) and Na St) or the equivalent defined hereinbelow.
- the graphite and boron nitride act as a solid lubricant for the members and aid in the formation of a substantially continuous highly oriented mo, crystalline surface film on the rubbing member work surface.
- the film is highly oriented because most of the oxide particles, as a result of run-in or break-in, align themselves due to the rubbing action during break-in with their basal planes substantially parallel to the top or exterior rubbing portion of the working surface.
- Na S0 acts as a particle trapping material in which the abraded oxide particles embed and orient themselves to sinter and form the substantially continuous film of highly oriented Fe 0 I
- the invention also provides anew hot rim and regenerator design configuration containing a novel debris groove arrangement which uses this material.
- FIG. 1 is a schematic showing of a part of a gas turbine engine comprising the regenerator portion or system.
- FIG. 2 is an elevation showing a regenerator core.
- FIG. 3 is an elevation showing an inner seal system from a regenerator section including hot seal rims and hot cross arms.
- FIGS. 4a and 4b are fragmentary schematics illustrating the structure of the material according to this invention before and after break-in, respectively.
- a regenerator core 10 rotates in rubbing contact between an outer seal system 12 also known as the cold seals, and an inner seal system 14, also known as the hot seals.
- System 14 includes a hot rim seal 16 and a hot cross ,arm seal 18.
- the material of this invention is particularly adapted for use as a working surface on hot rim seal 16 and will be described in that context herein although it is not necessarily limited thereto. In the environment of the hot rim seal the material is typically exposed to working tem- .peratures in the order of about 600 1,000 F.
- the material of such a working surface prior to break-in, consists of an iron oxide matrix preferably Fe O on the surface of a substrate, such as 430, 442, and 446 stainless steel or the like, generally ferritic stainless materials.
- a substrate such as 430, 442, and 446 stainless steel or the like, generally ferritic stainless materials.
- the exact character of the substrate is not important so long as it possesses the necessary compatible thermal expansion coefficient and the like with the material of the working surface layer.
- the other iron oxides FeO and Fe O or various mixtures thereof may also be used for the initial oxide matrix.
- the iron oxide contains an interspersed mixture of boron nitride, nickel coated graphite and sodium sulfate, sodium phosphate or calcium fluoride (Na2SO4, Na PO or CaF trapping material as shown in FIG. 4a.
- these materials are present in relative proportions of about 55 percent by weight Fefl 20 percent by weight nickel coated graphite, 20 percent by weight Na SO or equivalent and about 5 percent by weight boron nitride.
- the initial working surface is best formed by flame or plasma spraying a particulate mixture of Fe 0 powder, nickel coated graphite, boron nitride and the-trapping material Na SO Na PO CaF or mixtures thereof onto the substrate.
- Nicel coated graphite is used in the case of spraying because it comprises graphite particles coated with nickel to protect the graphite during spraying. It is commercially available in various compositions ranging from about 50-85 percent nickel and 50-15 percent graphite. Otherwise, ordinary graphite particulate may be used.
- FIG. 2 shows a regenerator core having a peripheral groove 24 on the face thereof and spaced grooves 26 radiating from the peripheral groOve toward the circumference of the core.
- FIG. 3 shows the hot rim seals 16 and cross arm 18 which mate with the regenerator core, the rims, cross-arms and core being in rubbing contact as shown above in FIG. 1 when the engine is in operation. Note from FIG. 3 that the surfaces of the seal system are smooth.
- peripheral and radial grooves 29 and 26 on the regenerator core are critical to long-life operation of seal systems of this configuration.
- the grooves function as a debris removing channel providing for the removal of any excessive amounts of abraded particles which may form, i.e., those particles not used in forming the continuous film. Excessive amounts of abraded particles which do not embed themselves in the trapping of the working surface layer cause abrasion of the mating surfaces.
- the configuration and working surface material cooperate together to provide for the embedding of some of the abraded iron oxide particles in the working surface where during run-in they orient themselves in a self-preferred fashion with their basal planes parallel to the working surface and sinter together to form a substantially continuous highly oriented Fe O film on the seal contact surface as shown in FIG. 4b.
- the grooves provide a means for removing those excess particles which do not embed themselves in the working surface thus avoiding having the particles trapped between the members and abrading the surface, causing damage.
- Run-in or break-in may occur under a wide variety of conditions.
- the following schedules show a few of the conditions which may be used ifa member intended to form a part of a regenerator system ofa gas turbine engine is to be broken in.
- break-in may take place in a running fixture or in an actual engine.
- T F temperature of the hot face of the regenerator as at the inner seal of the regenerator of FIG. 1.
- a member particularly adapted for operating under dry lubrication conditions comprising a substrate having a working surface made up of an iron oxide matrix including an interspersed mixture of boron nitride, a component selected from the group consisting of graphite, nickel coated graphite and mixtures thereof and a component selected from the group consisting of sodium sulfate, sodium phosphate, clacium fluoride and mixtures thereof, the interspersed mixture being present in relative amounts sufficient to promote the formation of a substantially continuous outer layer of Fe O on the working surface during break-in.
- the member of claim 1 wherein the interspersed mixture is present in about the proportion by weight of: 1 part boron nitride, 4 parts nickel coated graphite and 4 parts sodium sulfate, respectively.
- a regenerator section for a gas turbine engine wherein at least two members thereof are adapted for rubbing contact during operation of the engine, one of the members having an initial working surface comprised of an iron oxide matrix containing an interspersed mixture of boron nitride, a component selected from the group consisting of graphite, nickel coated graphite and mixtures thereof, and a component selected from the group consisting of sodium sulfate, sodium phosphate, calcium fluoride and mixtures thereof, the interspersed mixture being present in relative amounts sufficient to promote a transformation in the working surface during a break-in period and form as a result a substantially continuous film of Fe,0;, on the word surface of the one member and second film of Fe O on the mating member, formed by transfer from the one member thereto.
- the initial oxide matrix is substantially made up of Fe O 6.
- the one member is selected from the group consisting of regenerator seal rims and cross-arms, the mating surface being provided by the regenerator core.
- regenerator core mating surface contains a peripheral debris collecting groove and the seal rim and cross arm having a substantially smooth working surface.
- a member particularly adapted for operating under dry lubrication conditions comprising a substrate having an initial working surface made up of an iron oxide matrix containing an interspersed mixture of about by weight 1-10 percent boron nitride; -50 percent of a component selected from the group consisting of graphite, nickel coated graphite and mixtures thereof, and about 5-30 percent of a component selected from the group consisting of sodium sulfate, sodium phosphate, calcium fluoride and mixtures thereof, the balance of the working surface being comprised of the aforesaid iron oxide matrix.
- the iron oxide matrix is Fe O 11.
- the working surface of the member defined comprises an initial working surface prior to any break-in, the working surface after break-in including a substantially continuous outer layer of Fe O 12.
- the working surface is more particularly characterized as including an interspersed mixture of about 5 percent by weight of boron nitride, about 20 percent by weight of a component selected from the first mentioned group, about 20 percent by weight of a component selected from the second mentioned group, balance being comprised of the aforesaid iron oxide matrix.
- a rubbing member comprising a substrate having a working surface inlcuding a substantially continuous outer layer and a matrix between the layer and substrate comprised of iron oxide interspersed with a mixture in about the proportion by weight of 1 part boron nitride, 4 parts of a component selected from the group consisting of graphite, nickel coated graphite and mixtures thereof and 4 parts of a component selected from the group consisting of sodium sulfate, sodium phosphate, calcium fluoride, and mixtures thereof.
- Attesting Officer (lommissloner of Patents oem PO-105O (10-69) [1.5. GOVERNMENT PRINTING O FFICE 2 "l9 O-Bli-Sll.
Abstract
Description
Claims (13)
- 2. The member of claim 1 wherein the interspersed mixture is present in about the proportion by weight of: 1 part boron nitride, 4 parts nickel coated graphite and 4 parts sodium sulfate, respectively.
- 3. The rubbing member of claim 1 wherein the substrate is a stainless steel.
- 4. A regenerator section for a gas turbine engine wherein at least two members thereof are adapted for rubbing contact during operation of the engine, one of the members having an initial working surface comprised of an iron oxide matrix containing an interspersed mixture of boron nitride, a component selected from the group consisting of graphite, nickel coated graphite and mixtures thereof, and a component selected from the group consisting of sodium sulfate, sodium phosphate, calcium fluoride and mixtures thereof, the interspersed mixture being present in relative amounts sufficient to promote a transformation in the working surface during a break-in period and form as a result a substantially continuous film of Fe2O3 on the word surface of the one member and second film of Fe2O3 on the mating member, formed by transfer from the one member thereto.
- 5. The engine according to claim 4 wherein the initial oxide matrix is substantially made up of Fe3O4.
- 6. The engine of claim 4 wherein the one member is selected from the group consisting of regenerator seal rims and cross-arms, the mating surface being provided by the regenerator core.
- 7. The combination of claim 6 wherein the regenerator core mating surface contains a peripheral debris collecting groove and the seal rim and cross arm having a substantially smooth working surface.
- 8. The combination of claim 7 wherein additional spaced radial grooves are included on the core extending between the peripheral groove and the edge of the core.
- 9. A member particularly adapted for operating under dry lubrication conditions comprising a substrate having an initial working surface made up of an iron oxide matrix containing an interspersed mixture of about by weight 1-10 percent boron nitride; 10-50 percent of a component selected from the group consisting of graphite, nickel coated graphite and mixtures thereof, and about 5-30 percent of a component selected from the group consisting of sodium sulfate, sodium phosphate, calcium fluoride and mixtures thereof, the balance of the working surface being comprised of the aforesaid iron oxide matrix.
- 10. The member according to claim 9 wherein the iron oxide matrix is Fe3O4.
- 11. The member according to claim 9 wherein the working surface of the member defined comprises an initial working surface prior to any break-in, the working surface after break-in including a substantially continuous outer layer of Fe2O3.
- 12. The member according to claim 9 wherein the working surface is more particularly characterized as including an interspersed mixture of about 5 percent by weight of boron nitride, about 20 percent by weight of a component selected from the first mentioned group, about 20 percent by weight of a component selected from the second mentioned group, balance being comprised of the aforesaid iron oxide matrix.
- 13. The member according to claim 9 wherein the component selected from the first mentioned group is nickel coated graphite and the component selected from the second mentioned group is sodium sulfate.
- 14. A rubbing member comprising a substrate having a working surface inlcuding a substantially continuous outer layer and a matrix between the layer and substrate comprised of iron oxide interspersed with a mixture in about the proportion by weight of 1 part boron nitride, 4 parts of a component selected from the group consisting of graphite, nickel coated graphite and mixtures thereof and 4 parts of a component selected from the group consisting of sodium sulfate, sodium phosphate, calcium fluoride, and mixtures thereof.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US21241471A | 1971-12-27 | 1971-12-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3747944A true US3747944A (en) | 1973-07-24 |
Family
ID=22790913
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00212414A Expired - Lifetime US3747944A (en) | 1971-12-27 | 1971-12-27 | Dry lubricated materials, members and systems with boron nitride and graphite |
Country Status (8)
Country | Link |
---|---|
US (1) | US3747944A (en) |
JP (1) | JPS529274B2 (en) |
AU (1) | AU470108B2 (en) |
CA (1) | CA979421A (en) |
DE (1) | DE2263692A1 (en) |
FR (1) | FR2166106B1 (en) |
IT (1) | IT970359B (en) |
SE (2) | SE387363B (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3830280A (en) * | 1971-01-25 | 1974-08-20 | Mallory & Co Inc P R | Rare earth flouride lubricant for die casting components |
US3887201A (en) * | 1973-11-19 | 1975-06-03 | Ford Motor Co | Rubbing seal material for ceramic heat exchanger |
US3907311A (en) * | 1974-04-15 | 1975-09-23 | Ford Motor Co | High temperature, low friction ceramic coating for gas turbine regenerator seals |
US4205858A (en) * | 1977-12-08 | 1980-06-03 | Taiho Kogyo Co., Ltd. | Shaft-sealing sliding member |
US4391450A (en) * | 1982-08-30 | 1983-07-05 | Electrochemical Technology Corp. | Shaft seal resistant to electrokinetic corrosion |
US5165870A (en) * | 1990-05-30 | 1992-11-24 | Kabushiki Kaisha Toshiba | Refrigerant compressor |
US5221096A (en) * | 1990-10-19 | 1993-06-22 | Allied-Signal Inc. | Stator and multiple piece seal |
US6141953A (en) * | 1998-03-04 | 2000-11-07 | Solo Energy Corporation | Multi-shaft reheat turbine mechanism for generating power |
US6273432B1 (en) * | 1997-08-09 | 2001-08-14 | Robert Bosch Gmbh | Sealing element for sensors |
WO2004024994A1 (en) * | 2002-09-11 | 2004-03-25 | Moltech Invent S.A. | Protection of non-carbon anodes and other oxidation resistant components with iron oxide-containing coatings |
WO2009122169A2 (en) * | 2008-04-04 | 2009-10-08 | Ricardo Uk Ltd. | A device including sliding surfaces, a method of operation of a device, a method of making a device, and a turbocharger bearing |
CN101379313B (en) * | 2006-02-06 | 2011-03-02 | 松下电器产业株式会社 | Sliding member and method for manufacturing the same |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52108323A (en) * | 1976-03-10 | 1977-09-10 | Showa Denko Kk | High temperature lubricant parting agent composition |
JPS57172995A (en) * | 1982-03-29 | 1982-10-25 | Taiho Kogyo Co Ltd | Sliding member |
JP2555465B2 (en) * | 1990-03-28 | 1996-11-20 | 日本タングステン株式会社 | Self-lubricating hard material |
JP2881175B2 (en) * | 1991-12-03 | 1999-04-12 | アイシン・エィ・ダブリュ株式会社 | Servo hydraulic controller for automatic transmission |
DE4300464C1 (en) * | 1993-01-11 | 1994-06-09 | Dow Corning Gmbh | Solid lubricant combination, process for their production and their use |
JPH0720152U (en) * | 1993-09-24 | 1995-04-11 | 武盛 豊永 | Lantern type bellows cleaner tube |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3378392A (en) * | 1963-07-24 | 1968-04-16 | Metco Inc | High temperature flame spray powder and process |
US3503787A (en) * | 1966-02-11 | 1970-03-31 | United States Borax Chem | Method of making refractory aluminum nitride coatings |
US3601182A (en) * | 1969-09-02 | 1971-08-24 | Ford Motor Co | Rim construction for gas turbine rotating heat exchangers |
-
1971
- 1971-12-27 US US00212414A patent/US3747944A/en not_active Expired - Lifetime
-
1972
- 1972-10-19 CA CA154,289A patent/CA979421A/en not_active Expired
- 1972-11-09 IT IT31484/72A patent/IT970359B/en active
- 1972-12-19 SE SE7216614A patent/SE387363B/en unknown
- 1972-12-20 AU AU50326/72A patent/AU470108B2/en not_active Expired
- 1972-12-20 JP JP47127346A patent/JPS529274B2/ja not_active Expired
- 1972-12-27 DE DE2263692A patent/DE2263692A1/en active Pending
- 1972-12-27 FR FR7246513A patent/FR2166106B1/fr not_active Expired
-
1975
- 1975-10-06 SE SE7511169A patent/SE402619B/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3378392A (en) * | 1963-07-24 | 1968-04-16 | Metco Inc | High temperature flame spray powder and process |
US3503787A (en) * | 1966-02-11 | 1970-03-31 | United States Borax Chem | Method of making refractory aluminum nitride coatings |
US3601182A (en) * | 1969-09-02 | 1971-08-24 | Ford Motor Co | Rim construction for gas turbine rotating heat exchangers |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3830280A (en) * | 1971-01-25 | 1974-08-20 | Mallory & Co Inc P R | Rare earth flouride lubricant for die casting components |
US3887201A (en) * | 1973-11-19 | 1975-06-03 | Ford Motor Co | Rubbing seal material for ceramic heat exchanger |
US3907311A (en) * | 1974-04-15 | 1975-09-23 | Ford Motor Co | High temperature, low friction ceramic coating for gas turbine regenerator seals |
US4205858A (en) * | 1977-12-08 | 1980-06-03 | Taiho Kogyo Co., Ltd. | Shaft-sealing sliding member |
US4391450A (en) * | 1982-08-30 | 1983-07-05 | Electrochemical Technology Corp. | Shaft seal resistant to electrokinetic corrosion |
US5165870A (en) * | 1990-05-30 | 1992-11-24 | Kabushiki Kaisha Toshiba | Refrigerant compressor |
US5221096A (en) * | 1990-10-19 | 1993-06-22 | Allied-Signal Inc. | Stator and multiple piece seal |
US6273432B1 (en) * | 1997-08-09 | 2001-08-14 | Robert Bosch Gmbh | Sealing element for sensors |
US6141953A (en) * | 1998-03-04 | 2000-11-07 | Solo Energy Corporation | Multi-shaft reheat turbine mechanism for generating power |
WO2004024994A1 (en) * | 2002-09-11 | 2004-03-25 | Moltech Invent S.A. | Protection of non-carbon anodes and other oxidation resistant components with iron oxide-containing coatings |
CN101379313B (en) * | 2006-02-06 | 2011-03-02 | 松下电器产业株式会社 | Sliding member and method for manufacturing the same |
WO2009122169A2 (en) * | 2008-04-04 | 2009-10-08 | Ricardo Uk Ltd. | A device including sliding surfaces, a method of operation of a device, a method of making a device, and a turbocharger bearing |
WO2009122169A3 (en) * | 2008-04-04 | 2009-12-03 | Ricardo Uk Ltd. | A device including sliding surfaces, a method of operation of a device, a method of making a device, and a turbocharger bearing |
Also Published As
Publication number | Publication date |
---|---|
FR2166106A1 (en) | 1973-08-10 |
SE7511169L (en) | 1975-10-06 |
AU5032672A (en) | 1974-06-20 |
SE387363B (en) | 1976-09-06 |
JPS529274B2 (en) | 1977-03-15 |
DE2263692A1 (en) | 1973-07-12 |
AU470108B2 (en) | 1974-06-20 |
IT970359B (en) | 1974-04-10 |
FR2166106B1 (en) | 1977-12-30 |
SE402619B (en) | 1978-07-10 |
JPS4872562A (en) | 1973-09-29 |
CA979421A (en) | 1975-12-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3747944A (en) | Dry lubricated materials, members and systems with boron nitride and graphite | |
IT8322263A1 (en) | ABRASIVE AND ABRADIBLE SEALING SYSTEM FOR GAS TRAVEL IN GAS TURBINE ENGINES | |
US3926443A (en) | Composite seal ring and assembly | |
US3350178A (en) | Sealing device | |
US3948533A (en) | Composite ring made of press fitted parts and method of assembling | |
US3874680A (en) | Seal ring and bearing assembly | |
JPH0235177B2 (en) | ||
US3659861A (en) | Particulate coating for the rubbing seal of a gas turbine regenerator | |
US3903959A (en) | Gas turbine engine heat regenerator | |
RU1799424C (en) | Gas-turbine engine wear seal | |
US3907309A (en) | Resilient seal | |
US3746352A (en) | Rubbing seal for high temperature ceramics | |
US4110512A (en) | Iron oxide material and members for dry lubricated systems including the method of preparation therefor | |
US3730538A (en) | Rubbing seal for a rotary regenerative heat exchanger | |
US3883147A (en) | Dry lubricated materials | |
US2908537A (en) | Piston ring | |
US2245475A (en) | Fluid seal | |
JPH07269342A (en) | Seal assembly for mechanical seal of internal combustion engine coolant pump and manufacture thereof | |
US3646993A (en) | Stabilized nickel oxide seal | |
US3833320A (en) | Coating for apex seals of rotary engines and method of making | |
CH609379A5 (en) | Sealing materials for high temperatures | |
US3268997A (en) | Method of making a porous sealing device | |
US2433839A (en) | Shaft seal | |
Sliney et al. | Tribological properties of self-lubricating fluoride-metal composites to 900 C (1650 F): A review and some new developments | |
US4103908A (en) | Seal structures for rotary regenerative heat exchangers of gas turbine engines |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: FIDELITY UNION TRUST COMPANY, TRUSTEE,NEW JERSEY Free format text: MORTGAGE;ASSIGNOR:CHRYSLER CORPORATION;REEL/FRAME:003832/0358 Effective date: 19810209 Owner name: FIDELITY UNION TRUST COMPANY, 765 BROAD ST., NEWAR Free format text: MORTGAGE;ASSIGNOR:CHRYSLER CORPORATION;REEL/FRAME:003832/0358 Effective date: 19810209 |
|
AS | Assignment |
Owner name: CHRYSLER CORPORATION, HIGHLAND PARK, MI 12000 LYNN Free format text: ASSIGNORS HEREBY REASSIGN, TRANSFER AND RELINQUISH THEIR ENTIRE INTEREST UNDER SAID INVENTIONS AND RELEASE THEIR SECURITY INTEREST.;ASSIGNORS:FIDELITY UNION BANK;ARNEBECK, WILLIAM, INDIVIDUAL TRUSTEE;REEL/FRAME:004063/0604 Effective date: 19820217 |
|
AS | Assignment |
Owner name: CHRYSLER CORPORATION Free format text: PARTES REASSIGN, TRANSFER AND RELINQUISH THEIR ENTIRE INTEREST UNDER SAID PATENTS ALSO RELEASE THEIR SECURITY INTEREST.;ASSIGNOR:MANUFACTURERS NATIONAL BANK OF DETROIL (CORPORATE TRUSTEE) AND BLACK DONALD E., (INDIVIDUAL TRUSTEE);REEL/FRAME:004355/0154 Effective date: 19840905 |
|
AS | Assignment |
Owner name: ICM, A DE GENERAL PARTNERSHIP, MICHIGAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AMPLEX VAN WERT CORPORATION, A CORP OF DE;REEL/FRAME:005237/0133 Effective date: 19881128 |
|
AS | Assignment |
Owner name: AMPLEX VAN WERT CORPORATION, A CORP. OF DE., OHIO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CHRYSLER CORPORATION;REEL/FRAME:005072/0662 Effective date: 19860528 |
|
AS | Assignment |
Owner name: HELLER FINANCIAL, INC., A DE CORP. AS AGENT Free format text: SECURITY INTEREST;ASSIGNOR:ICM/KREBSOGE, A DE GENERAL PARTNERSHIP;REEL/FRAME:005249/0126 Effective date: 19890915 |
|
AS | Assignment |
Owner name: HELLER FINANCIAL, INC. Free format text: AMENDMENT TO RESTATE THE ORIGINAL SECURITY AGREEMENT DATED SEPTEMBER 15, 1989.;ASSIGNOR:ICM/ KREBSOGE A GENERAL PARTNERSHIP OF DELAWARE;REEL/FRAME:005797/0303 Effective date: 19910724 |