GB2234522A - Metal ceramic composite - Google Patents

Metal ceramic composite Download PDF

Info

Publication number
GB2234522A
GB2234522A GB9015651A GB9015651A GB2234522A GB 2234522 A GB2234522 A GB 2234522A GB 9015651 A GB9015651 A GB 9015651A GB 9015651 A GB9015651 A GB 9015651A GB 2234522 A GB2234522 A GB 2234522A
Authority
GB
United Kingdom
Prior art keywords
metal
ceramic composite
composite material
zirconia
workpieces
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.)
Withdrawn
Application number
GB9015651A
Other versions
GB9015651D0 (en
Inventor
Pravin Mistry
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Crown Packaging UK Ltd
Original Assignee
CMB Foodcan PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from GB898917809A external-priority patent/GB8917809D0/en
Application filed by CMB Foodcan PLC filed Critical CMB Foodcan PLC
Priority to GB9015651A priority Critical patent/GB2234522A/en
Publication of GB9015651D0 publication Critical patent/GB9015651D0/en
Publication of GB2234522A publication Critical patent/GB2234522A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • C04B35/5607—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 refractory metal carbides
    • C04B35/5626—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 refractory metal carbides based on tungsten carbides
    • 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
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/12—Metallic powder containing non-metallic particles
    • 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
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
    • C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Metallurgy (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Powder Metallurgy (AREA)

Abstract

A metal-ceramic composite material comprises tungsten carbide, a ceramic selected from a group consisting of zirconia and titanium diboride, and a metal, for example nickel or copper. Articles may be made from the material by the following method. Each component of the material is reduced to a powder and the three powders are blended together and mixed with paraffin wax which acts as a binder. The resulting mixture is compacted and formed into workpieces. The workpieces are heated in a presintering furnace to remove the paraffin wax and then in a sintering furnace to provide the desired articles.

Description

"METAT-CERAMIC COMPOSITE" This invention relates to a metal-ceramic composite material and also to a method of making articles from such a material.
It is an object of this invention to provide a new or improved metal-ceramic composite material. It is another object of this invention to provide a method of making articles from such a material.
According to a first aspect of this invention, there is provided a metal-ceramic composite material comprising tungsten carbide, a ceramic selected from a group consisting of zirconia and titanium diboride, and a metal.
According to a second aspect of this invention, there is provided a method of making articles from a material according to the first aspect of this invention, said method comprising the steps of reducing each component of the material to a powder, blending the powders together, mixing the blended powder with a binder to form a mixture, compacting the mixture, forming the mixture into workpieces, and heating the workpieces in a sintering furnace to form articles.
This invention will now be described in more detail by way of example.
In a preferred example, the metal-ceramic composite material comprises tungsten carbide, zirconia and nickel. In the preferred composition, the material comprises 84.5 to 87.5 tungsten carbide, 12 to 14% zirconia, and 0.5 to 1.5% nickel, each by weight. If the proportion of zirconia is reduced below 12% or increased above 14% it has been found that articles formed from the material have a tendency to crumble. The composition set out above provides a material which is not magnetic, which has a density of 14 grams per cubic centimetre, and which has excellent wear resistance and hot hardness properties.
A method of making articles from a material having the composition set out above will now be described.
In this method, each component of the material is reduced, individually, to a powder in a ball mill. More specifically, the tungsten carbide, zirconia and nickel are reduced to particles having diameters which, respectively, are less than 3 micrometres, 40 micrometres, and 2 micrometres. Each powder is dispersed in acetone and subjected to a spray drying operation. The three powders are then blended together and mixed with paraffin wax which acts as a binder.
The resulting mixture is compacted and formed into workpieces by, for example, extrusion or die pressing. The workpieces have dimensions which correspond to those of the desired articles. The workpieces are heated in a presintering furnace at 600"C to remove the paraffin wax. Then, the workpieces are heated in a sintering furnace at 1462"C to provide the desired articles. 1462"C is slightly above the melting point of nickel.
By way of one modification to the metalceramic material described above, the nickel may be replaced by another metal, for example copper.
By way of another modification, zirconia may be replaced by titanium diboride.

Claims (7)

1. A metal-ceramic composite material comprising tungsten carbide, a ceramic selected from a group consisting of zirconia and titanium diboride, and a metal.
2. A metal-ceramic composite material as claimed in Claim 1, in which the metal is nickel.
3. A metal-ceramic composite material as claimed in Claim 1, in which the metal is copper.
4. A metal-ceramic composite material as claimed in any one of the preceding claims, in which said ceramic is zirconia.
5. A metal-ceramic composite as claimed in Claim 4, in which the proportion of zirconia is 12 to 14 by weight.
6. A metal-ceramic composite material as claimed in any one of Claims 1 to 3, in which said ceramic is titanium diboride.
7. A method of making articles substantially as hereinbefore described.
7. A metal-ceramic composite as claimed in Claim 1 comprising 84.5 to 87.5% tungsten carbide, 12 to 14% zirconia and 0.5 to 1.5% nickel, each by weight.
8. A metal-ceramic composite material substantially as hereinbefore described.
9. A method of making articles from the material as claimed in any one of the preceding claims, comprising the steps of reducing each component of the material to a powder, blending the powders together, mixing the blended powders with a binder to form a mixture, compacting the mixture, forming the mixture into workpieces, and heating the workpieces in a sintering furnace to form articles.
10. A method of making articles substantially as hereinbefore described.
Amendments to the claims have been filed as follows 1. A metal-cermaic material comprising tungsten carbide, zirconia in the proportion of 12 to 14 by weight, and a metal.
2. A metal-ceramic composite material as claimed in Claim 1, in which the metal is nickel.
3. A metal-ceramic composite material as claimed in Claim 1, in which the metal is copper.
4. A metal-ceramic composite as claimed in Claim 1 comprising 84.5 to 87.5 tungsten carbide, 12 to 149 zirconia and 0.5 to 1.5k nickel, each by weight.
5. A metal-ceramic composite material substantially as hereinbefore described.
6. A method of making articles from the material as claimed in any one of the preceding claims, comprising the steps of reducing each component of the material to a powder, blending the powders together, mixing the blended powders with a binder to form a mixture, compacting the mixture, forming the mixture into workpieces, and heating the workpieces in a sintering furnace to form articles.
GB9015651A 1989-08-03 1990-07-17 Metal ceramic composite Withdrawn GB2234522A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9015651A GB2234522A (en) 1989-08-03 1990-07-17 Metal ceramic composite

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB898917809A GB8917809D0 (en) 1989-08-03 1989-08-03 Metal-ceramic composite
GB9015651A GB2234522A (en) 1989-08-03 1990-07-17 Metal ceramic composite

Publications (2)

Publication Number Publication Date
GB9015651D0 GB9015651D0 (en) 1990-09-05
GB2234522A true GB2234522A (en) 1991-02-06

Family

ID=26295702

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9015651A Withdrawn GB2234522A (en) 1989-08-03 1990-07-17 Metal ceramic composite

Country Status (1)

Country Link
GB (1) GB2234522A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105543607A (en) * 2015-12-21 2016-05-04 佛山市中科院环境与安全检测认证中心有限公司 Alloy material

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114657405B (en) * 2022-03-25 2023-08-29 湖北中烟工业有限责任公司 Electromagnetic heating material for low-temperature cigarettes and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB395134A (en) * 1931-08-28 1933-07-13 Tool Metal Mfg Company Ltd Improvements in hard alloys
GB532486A (en) * 1938-09-01 1941-01-24 British Thomson Houston Co Ltd Improvements in and relating to methods of making hard sintered alloys
GB1297075A (en) * 1969-05-20 1972-11-22
GB1558068A (en) * 1975-07-09 1979-12-19 Teledyne Ind Aluminium oxide based compositions

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB395134A (en) * 1931-08-28 1933-07-13 Tool Metal Mfg Company Ltd Improvements in hard alloys
GB532486A (en) * 1938-09-01 1941-01-24 British Thomson Houston Co Ltd Improvements in and relating to methods of making hard sintered alloys
GB1297075A (en) * 1969-05-20 1972-11-22
GB1558068A (en) * 1975-07-09 1979-12-19 Teledyne Ind Aluminium oxide based compositions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105543607A (en) * 2015-12-21 2016-05-04 佛山市中科院环境与安全检测认证中心有限公司 Alloy material

Also Published As

Publication number Publication date
GB9015651D0 (en) 1990-09-05

Similar Documents

Publication Publication Date Title
US4320204A (en) Sintered high density boron carbide
US3623849A (en) Sintered refractory articles of manufacture
CA1328178C (en) Metal composites with fly ash incorporated therein and a process for producing the same
EP0035777B1 (en) Abrasion resistant silicon nitride based articles
US3964878A (en) Cemented carbide employing a refractory metal binder and process for producing same
GB2074609A (en) Metal binder in compaction of metal powders
GB2234522A (en) Metal ceramic composite
EP0593591B1 (en) Boron carbide-copper cermets and method for making same
JP3303186B2 (en) Method for producing heat-resistant tungsten carbide-based cemented carbide having high strength
JPH0665733B2 (en) Electrode machining electrode material and method for producing the same
JPH0328172A (en) High toughness-and high hardness-sintered material
JPH05279121A (en) Sintered compact of tungsten carbide-alumina and its production
JPH09316589A (en) Aluminum oxide-tungsten carbide-cobalt composite material having high toughness, high strength, and high hardness
JPH0681071A (en) Titanium carbonitride base cermet excellent in toughness
Mistry Metal--Ceramic Composite
JPH10259433A (en) Production of hyperfine-grained tungsten carbide base sintered hard alloy having high strength
JPH0768600B2 (en) Compound boride sintered body
JPS6056781B2 (en) Cermets for cutting tools and hot working tools
CN86107658A (en) Metallic ceramic moulding material for hot processing
JPS6335706B2 (en)
JP2626863B2 (en) Cemented carbide and its manufacturing method
JPS60264368A (en) Superhard ceramic and manufacture
JPS6157381B2 (en)
JPH0421738A (en) High toughness and high hardness sintered body
JPH0313539A (en) High toughness and high hardness sintered body and its manufacture

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)