WO2004035309A1 - Produit composite metal/ceramique presentant des contraintes de compression superficielles - Google Patents
Produit composite metal/ceramique presentant des contraintes de compression superficielles Download PDFInfo
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- WO2004035309A1 WO2004035309A1 PCT/EP2003/011374 EP0311374W WO2004035309A1 WO 2004035309 A1 WO2004035309 A1 WO 2004035309A1 EP 0311374 W EP0311374 W EP 0311374W WO 2004035309 A1 WO2004035309 A1 WO 2004035309A1
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- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B18/00—Layered products essentially comprising ceramics, e.g. refractory products
-
- 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
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
-
- 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
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
-
- 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
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/02—Pretreatment of the material to be coated
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- 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
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/10—Oxidising
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
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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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
-
- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/658—Atmosphere during thermal treatment
-
- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/66—Specific sintering techniques, e.g. centrifugal sintering
- C04B2235/668—Pressureless sintering
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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
- 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
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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
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
- C04B2237/32—Ceramic
- C04B2237/34—Oxidic
- C04B2237/343—Alumina or aluminates
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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
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
- C04B2237/58—Forming a gradient in composition or in properties across the laminate or the joined articles
- C04B2237/582—Forming a gradient in composition or in properties across the laminate or the joined articles by joining layers or articles of the same composition but having different additives
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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
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
- C04B2237/70—Forming laminates or joined articles comprising layers of a specific, unusual thickness
- C04B2237/704—Forming laminates or joined articles comprising layers of a specific, unusual thickness of one or more of the ceramic layers or articles
Definitions
- the invention relates to a metal / ceramic composite product made of powder metallurgy, reactive sintered metal / ceramic composite materials in which compressive stresses are generated in the surface and its production.
- Surface compressive stresses are suitable for significantly increasing the damage tolerance of components. This is an effective method, particularly with brittle materials such as ceramics, to increase the reliability and service life of components, especially under operating conditions in which surface damage can be expected. Otherwise damage to the surface of ceramic components can be drastically reduced or even catastrophic failure of the entire component can result. This can largely be avoided by surface compressive stresses. Surface compressive stresses are multifunctional; in addition to an increase in damage tolerance, higher strength and improved wear resistance are also to be expected. The principle is universally applicable; possible applications are e.g. Rolling bearings, engine parts and hydraulic components.
- surface compressive stresses can be generated in components in various ways, e.g. by applying an outer layer with a lower coefficient of thermal expansion on a material with a higher coefficient of expansion. If the material is plastically deformable at high temperature, it is then stress-free at high temperature (typically> 1000 ° C for ceramics) due to plastic deformation. When it cools, the plasticity disappears and forms compressive stresses in the surface area.
- systems with surface compressive stresses for example in the case of glass, are already state of the art and are used in a variety of ways (safety glass).
- the invention has for its object to produce a metal / ceramic composite product with surface tensions, which reach deep into the material in a controlled manner, so that crack growth is reliably hindered and layer detachments are avoided.
- a metal / ceramic composite product with surface tensions which is characterized by the structure of several layers with different expansion coefficients of the adjacent layers, the layers containing Al 2 O 3 and up to 70% by volume of at least one metal ,
- the metal portion of the layers preferably consists of at least one of the metals Cr, Fe, Mo, Al, aluminide, Al alloys of Cr, Fe or Mo or mixtures thereof.
- such a composite product can advantageously still contain up to 80% by volume of ZrO 2 .
- the properties of the composite product can also be regulated by adding carbides and / or nitrides, these being present in an amount of 1 to 20% by volume.
- the carbides or nitrides are preferably selected from Cr 3 C 2 , SiC, TiC, B 4 C, TaC and BN.
- the outer layer of a composite product according to the invention can have a lower metal content than the underlying layer, here referred to as substrate, or a metal with a lower thermal expansion coefficient than the substrate, which consequently contains a higher metal content or / and one metal or more metals with a higher thermal expansion coefficient.
- the outer layer of the composite products according to the invention is generally harder than the inner layer or. the interior of the material in a two-layer construction. A proportion of metals that form alloys with one another results in good interfacial strength.
- a composite product according to the invention can be produced by several processes.
- a densely sintered s-3A composite material as is known from EP 0 902 771, is made of 2 to 70% by volume Cr, 0.1 to 20% by volume Al and up to 80 vol .-% ZrO 2 consists of, annealed in an oxygen-containing atmosphere until the Cr is oxidized in the surface layer.
- the Al 2 O 3 / Cr 2 O 3 mixed crystals have a lower thermal expansion coefficient than pure Al 2 O 3 .
- 5 to 60 is preferred Annealed in air at a temperature of 1000 to 1500 ° C for minutes. However, the annealing treatment can also be extended to several hours.
- heat treatment can also be carried out in a vacuum or under protective gas in order to bring about structural changes without changing the composition of the layers of the composite product itself.
- powder layers with different compositions are produced dry or wet by powder metallurgy and densely sintered in an inert atmosphere.
- different powder mixtures are pressed sequentially and then sintered as described.
- this procedure can also be carried out by immersing a green body made of a material with a higher coefficient of thermal expansion, for example Fe / Al / Al 2 O 3 , into a suspension of a metal with a lower coefficient of expansion such as Cr / Al / Al 2 O 3 , so that a coating of the green body is achieved (dip coating).
- the material is then densely sintered.
- the coefficient of thermal expansion can be adjusted by adding ZrO 2 , carbides and / or nitrides in different amounts as described above.
- this procedure uses an inner layer composed of 35 to 40% by weight of Fe, 2.5 to 3.5% by weight of Al and 57 to 59% by weight of Al 2 O 3 with the composition 37 to 38 wt .-% Cr, 0.5 to 1 wt .-% Al and 61, 5 to 62.5 wt .-% Al 2 O 3 coated, this being done dry or wet powder metallurgy can.
- the coated body is then densely sintered at at least 1450 ° C.
- a composite product according to the invention can be produced in two layers by the above methods, so that an inner body is completely covered with an outer layer.
- the layers can also be built up so that e.g. further layers with different coefficients of expansion are applied to a plate of an inner layer with a certain composition on one or both sides and then densely sintered in an inert atmosphere.
- the cover layers in turn have different compositions in order to be able to correspond in a special way to the intended later use.
- a multiplicity of layers can also be provided, the only important thing is that each layer differs from the other layer. a n l i e g e n s e ch i c hte n i m expansion coefficient.
- the starting materials were used in the form of fine powders produced in attritor mills, which were produced by the process of EP 0 902 771 (s-3A process).
- the process is based on the aluminothermic reduction of metal oxides or oxide layers.
- powder mixtures of Al 2 O 3 , a metal (for example Cr, Fe, Mo) and aluminum are ground intensively, compacted by pressure and densely sintered in a vacuum or protective gas.
- ZrO 2 is often added to improve the mechanical properties.
- the aluminum serves to reduce the oxide layer on the particles of the other metal and thus to achieve a higher sintering activity.
- pressure-assisted sintering processes are usually used Compaction must be used, the s-3A process allows an unpressurized and therefore much cheaper sintering.
- 0.35 g of a powder mixture of 37.20% by weight of Cr, 0.75% by weight of Al and 62.06% by weight of Al 2 O 3 were placed in a press die of the base area 4.3 mm ⁇ 47 mm and lightly pressed with approx. 5 N. Subsequently, 3.3 g of a powder mixture of 38.26% by weight of Fe, 3.82% by weight of Al and 57.92% by weight of Al 2 O 3 were added to the first layer contained in the press die and mixed with approx. 5 N lightly pressed.
- a third layer was then placed on the two layers in the press mold, the quantity and composition of which was identical to the first layer, so that a symmetrical three-layer composite was formed, which was then uniaxially with a pressure of 50 MPa and then isostatically with a pressure of 900 MPa and then densely sintered at 1,500 ° C in argon.
- the resulting samples showed no delamination of the layers and consisted of a central inner layer about 6 mm thick with two outer layers each about 0.6 mm thick.
- Bending rods produced in this way in which a Vickers impression was made in the surface layer with a load of up to 294 N, showed a significantly higher residual strength compared to samples not constructed in layers and a reduced crack growth around the Vickers impression perpendicular to the longitudinal axis of the bending rod.
- the first was placed in the die Layer 2.5 g of a powder mixture of 25.09 wt .-% Fe, 2.51 wt .-% Al, 20.09 wt .-% ZrO 2 and 52.31 wt .-% Al 2 O 3 and with approx. 5 N lightly pressed.
- a third layer was then placed on the two layers in the press mold, the quantity and composition of which was identical to the first layer, so that a symmetrical three-layer composite was formed, which was then uniaxially with a pressure of 50 MPa and then isostatically with a pressure of 900 MPa and then densely sintered at 1,500 ° C in argon.
- the resulting samples showed no delamination of the layers and consisted of a central inner layer about 5 mm thick with two outer layers each about 0.5 mm thick.
- a composite material already sintered to a density of approx. 96% of the theoretical density, produced from a powder mixture of 28.71% by weight Cr, 0.57% by weight Al, 1 9.62% by weight ZrO 2 and 51.1% by weight Al 2 0 3 was annealed in air at a temperature of 1,500 ° C. for 30 minutes.
- the glow in air caused an oxidation of Cr in the edge area of the sample and an approximately 600 ⁇ m thick edge layer was formed, in which microscopic Cr could no longer be detected.
- a Vickers impression introduced into this boundary layer with a load of 98.1 N showed no cracks.
- a composite material already sintered to a density of approx. 97% of the theoretical density, produced from a powder mixture of 1 6.60% by weight Cr, 0.33% by weight Al and 83.07% by weight Al 2 O. 3 was annealed in air at a temperature of 1,500 ° C for 15 minutes.
- the glow in air caused an oxidation of Cr in the edge area of the sample and an approx. 300 ⁇ m thick edge layer was formed, in which microscopic Cr could no longer be detected.
- One in this Edge layer with a load of 98.1 N introduced Vickers impression showed no cracks in contrast to the otherwise usual behavior of brittle materials.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003274003A AU2003274003A1 (en) | 2002-10-14 | 2003-10-14 | Composite metal/ceramic product having surface compressive stresses |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10247807.4 | 2002-10-14 | ||
DE2002147807 DE10247807A1 (de) | 2002-10-14 | 2002-10-14 | Metall/Keramik-Verbundprodukt mit Oberflächendruckspannungen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004035309A1 true WO2004035309A1 (fr) | 2004-04-29 |
Family
ID=32038638
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/011374 WO2004035309A1 (fr) | 2002-10-14 | 2003-10-14 | Produit composite metal/ceramique presentant des contraintes de compression superficielles |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2003274003A1 (fr) |
DE (1) | DE10247807A1 (fr) |
WO (1) | WO2004035309A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN113061793A (zh) * | 2021-02-26 | 2021-07-02 | 成都虹波实业股份有限公司 | 一种难熔金属基高体积比陶瓷材料及其制备工艺 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB788918A (en) * | 1953-06-09 | 1958-01-08 | Union Carbide Corp | Laminated ceramic articles and slip casting method of producing the same |
US4602956A (en) * | 1984-12-17 | 1986-07-29 | North American Philips Lighting Corporation | Cermet composites, process for producing them and arc tube incorporating them |
US4659547A (en) * | 1984-05-24 | 1987-04-21 | Hoganas Ab | Inhomogeneous sintered body |
DE4119705A1 (de) * | 1991-06-14 | 1992-12-17 | Claussen Nils | Keramischer verbundkoerper |
-
2002
- 2002-10-14 DE DE2002147807 patent/DE10247807A1/de not_active Withdrawn
-
2003
- 2003-10-14 WO PCT/EP2003/011374 patent/WO2004035309A1/fr not_active Application Discontinuation
- 2003-10-14 AU AU2003274003A patent/AU2003274003A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB788918A (en) * | 1953-06-09 | 1958-01-08 | Union Carbide Corp | Laminated ceramic articles and slip casting method of producing the same |
US4659547A (en) * | 1984-05-24 | 1987-04-21 | Hoganas Ab | Inhomogeneous sintered body |
US4602956A (en) * | 1984-12-17 | 1986-07-29 | North American Philips Lighting Corporation | Cermet composites, process for producing them and arc tube incorporating them |
DE4119705A1 (de) * | 1991-06-14 | 1992-12-17 | Claussen Nils | Keramischer verbundkoerper |
Also Published As
Publication number | Publication date |
---|---|
AU2003274003A1 (en) | 2004-05-04 |
AU2003274003A8 (en) | 2004-05-04 |
DE10247807A1 (de) | 2004-04-22 |
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